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Executive Committee – 11 April 2005 Appendix to Agenda Item 5c

Rickmansworth AquadromeManagement Plan

2005-2010

Karen FishwickLandscape OfficerThree Rivers District Council


Acknowledgements

A big thank you to the Aquadrome Licensees forum for all their help and guidance:

Alan Russell, Bury Lake Young MarinersGordon Bettis, Rickmansworth Waterski ClubBrian Morgan, Friends of Stockers LakeLis and Terry Dorer, Swan CareAndrew Bailey, Rickmansworth WindsurfingKeith Allen, Three Rivers Radio Controlled Yachting CubLaurie Dalton, Uxbridge RoversNick Moore, Nomad Kayak ClubPete Linskey, Out of Town Action Sports

And also to:

Gloria Gillespie, TRDC Residential Standards ManagerAlison Page, TRDC Environmental ServicesPeter Brooker, TRDC Director of Leisure and Environment

And from the Licensees:

On behalf of all the licensed clubs and businesses at Rickmansworth Aquadrome I would like to record our appreciation of the effort put in by Karen Fishwick to produce this Mnaagement Plan. Karen has taken a great deal of time and trouble to consult widely to ensure that all points of view are represented fairly, and that an appropriate balance is maintained between leaisure and conservation interests.

Alan Russell, Chaiman, Aquadrome Licensees Forum


Contents

Page1. Description 3

1.1 Site Details1.2 Site Description

1.2.1. Habitats 1.2.2. Geology1.2.3. Hydrology

2. Leisure and Recreation 52.1. Licensees2.2. Buildings2.3. Access2.4. Informal Recreation

3. Conservation and Maintenance 123.1. Wildlife and Conservation3.2. Tree Management3.3. Water Quality

3.3.1. Background3.3.2. Factors contributing to current excess nutrient (eutrophication) in the lakes3.3.3. Treatment Options

3.4. Erosion and Water levels3.5. The Bury3.6. Grounds Maintenance Contract

4. Resources 19

5. Public Consultation 20

6. Site Objectives 21

7. Five Year Action Plan 23

Appendices

i) Bylaws ii) Mapsiii) Species Lists iv) Building Survey Summaryv) Disability Access Surveyvi) Procedure for Managing Water Quality Issuesvii) Options Appraisal for Water Qualityviii) Public Consultationix) Bibliography


1. Description

1.1 Site details

Name Rickmansworth Aquadrome, including the Bury GroundsArea 50 hectaresGrid Ref TQ054939District and County Three Rivers District, HertfordshireConservation Status Wildlife SiteNature of Legal Interest owned by Three Rivers District Council Byelaws (Appendix 1)Access Free pedestrian access throughout, Public Vehicular access to the

car park only.

A Way Forward

The Aquadrome is a wonderful asset for the community of Three Rivers. It provides a facility with a variety of uses, formal and informal, directly adjacent to Rickmansworth Town Centre and is available for everyone to enjoy, irrespective of background, finance, age or gender.

The site was originally quarried as part of the large industry of gravel extraction, leaving behind the large “holes” in the valley floor that are now the lakes. From this “industrial” past a future of Conservation and Recreation has been forged for the benefit of this and future generations.

The Aquadrome is situated at the northern end of the Colne Valley Regional Park, an area of land recognised to be of special value for open air recreation. Council policy requires that the Park should be protected from urbanisation and recognises the “diverse nature conservation resources of the Park”.

Adjacent to the site is the Grand Union Canal, the Rivers Colne and Chess and Batchworth Lock Visitors Centre, which is run by the Rickmansworth Waterways Trust, a voluntary organisation that brings together people who are passionate about canals, the local community, its history and environment. Through the Trust’s education programme an understanding of the history of the waterway and the natural environment is demonstrated.

The Aquadrome and adjacent sites are designated as Wildlife sites, a status that is recognised as important for Nature Conservation in the Council’s Local Plan.

The Council’s Local Biodiversity Action Plan (LBAP) sets out the Council’s intentions to preserve habitats and species important to the area, and the habitats within the Aquadrome offer first class opportunity to do this.

The Aquadrome is the largest of the Council owned sites in the Colne Valley, the others being relatively small woodlands.

1.2 Site Description

1.2.1 Habitats

The area is of sufficient size to enable many forms of active and passive recreation to take place, both land and water based, from picnicking and dog walking to water skiing and canoeing. The largest habitats on the site are the two lakes (see map 1, Appendix 11). These lakes cover an area of about 18 hectares. They both have a number of birds present, although nesting is more likely to occur on the relatively undisturbed Stockers Lake. Water birds include Mallards, Swans, Canada Geese, Coots, Moor Hens, Herons and Grebes. However, it is very likely that other birds known to nest at Stockers Lake also use the lakes in the Aquadrome. The lake edges have a


number of Rushes, Reeds and Iris, the banks themselves have a number of water loving plants such as Water Forget-Me -Not and Water Mint. Further onto the bank other species become apparent, such as Valerian, Pale-Flower Persicaria, Bindweed, Dock, Rose-Bay Willow-Herb and Ragwort. Dragonflies and Damselflies have been seen near the lakes including the Common Blue Damselfly (see Appendix III).

Another prevalent habitat at the Aquadrome is the Woodland areas. These areas have often been flooded and have many water tolerant native species such as Willow and Alder, and other native species including Oak, Field Maple, Elder, Ash and Holly. There are also a number of introduced species such as ornamental Acers, Sumach and non native Conifers. A number of woodland plants are present, such as Ivy, Dog Rose and Wood Avens.

There are number of grass areas that are regularly mown to keep them short. These are used for picnics and recreation. They include glades or openings in the wooded areas. In addition to grass these areas have the usual species in this type of setting such as Dandelions, Daisies and Plaintains. These areas also show evidence of Moles.

Around the mown areas and near to paths there are areas which are not mown, these rough areas tend to have longer Grass, Nettles, Brambles Thistles and Cow Parsley.

The River Colne runs adjacent to and through the site. Dragonflies and Damselflies have been seen including the Common Blue Damselfly and the Banded Damiselle. The Banded Damiselle tends to indicate clean water.

The area known as the Bury is the historical grounds of the Manor House. This has a feel of more open Parkland. It is mostly grass with specimen trees and avenues of trees, although the area between the steam and the River Colne has been allowed to overgrow and has only recently been cut back again.

1.2.2. Geology

The site is in Colne Valley, which was originally formed by glacial movement and later shaped by the action of the River Colne. This can be seen in the glacial deposits prevalent in the Drift geology of the area and the River Gravels and Alluvium (See Appendix II Map 2). These drift deposits overly Clay.

The Aquadrome site is sited on an area of Alluvium overlying River Gravels. The Lakes themselves were formed by the extraction of gravel.

1.2.3. Hydrology

The Valley runs from North-East to South-West. Water is brought to the area by the River Colne and the Grand Union Canal, but the lakes themselves are apparently fed by underground springs. There is a sluice gate between the river and Batchworth lake, but this remains close as to open it would require a licence for abstracting water from the river.


2. Leisure and Recreation

2.1. Licensees

There are a number of groups who use the lake, including clubs, charities and businesses. Batchworth Lake is used by Waterskiers and Fishermen. Bury Lake is used for a variety of watersports including Sailing, Canoeing, Rafting and Windsurfing as well as Model Boat Sailing. These groups provide a valuable leisure opportunity for many people in the District and beyond.

The Aquadrome Licensees Forum, which meets quarterly, gives an opportunity for these groups to discuss the management of the site and any issues that arise.

The Groups using and associated with the Aquadrome are:

Bury Lake Young MarinersThis is a voluntary association and registered charity founded in 1983. The Young Mariners are a Royal Yachting Association (RYA) Training Centre, providing inexpensive sailing courses for beginners, intermediate and advanced levels. This group has 3500 users per year, including the Colne Valley Special Sailors disabled sailing group and the Bizzy Bees group of active retired people as well as activities in the school holidays, weekends and after school. Schools, Youth Clubs, Scouts and Guides may affiliate as groups and training is provided for their leaders. Racing takes place and the Association is a feeder to the Hertfordshire Youth Dinghy Race Squad, who represent the County at National and International events. The Young Mariners sail on Bury Lake and have use of the Boathouse and storage compound.

For further information please contact:Young Mariners on 01923772015 or [email protected] For Sailing Courses 01442 878478 or [email protected] www.Blym.org.uk

Friends of Stocker Lake As the name implies this group is generally concerned with Stockers Lake, which is adjacent to the Aquadrome. However they recognise that the management of the Aquadrome is likely to affect that of Stockers Lake and so take a keen interest in the Aquadrome.

For further information please call:01923 773922

Nomad Kayak Club The Club was established in 1973 and initially the activities revolved around pool training and canoe polo. The Club’s activities then extended to training on local canals and rivers, as well as trips away to white-water rivers and canoeing surfing locations. In the early 1980’s the disused changing rooms at Rickmansworth Aquadrome were taken over by the Club and used as a boat storage facility and Headquarters together with the rights to paddle on the lake. During the 1990’s a corner of the lake was developed for the use of canoe polo. This being the first outdoor polo pitch in the South of England.The Club continues to use this facility at the Aquadrome and changing facilities have been provided within the building. The activities are centred around the lake and surrounding weirs and rivers. Apart from this local canoeing, the Club continues to use the Watford Central Baths on a regular basis for general training and canoe polo.

For more information please visit:www.nomadkayakclub.co.uk

Out of Town Action SportsThis is a business run to provide sports and activities, including canoeing windsurfing and rafting. Out of Town Action Sports deliver a programme of activities allowing participants the chance to enjoy the challenge and thrill of the outdoors. These activities include taster sessions to see if you enjoy a sport, a group activity day, team building and leadership development through outdoor learning - or something a bit different for a party.

http://www.nomadkayakclub.co.uk/

http://www.Blym.org.uk/

mailto:[email protected]



For more information please call:

01923 771120www.outoftownactionsport.com [email protected]

Rickmansworth Waterski ClubRickmansworth Waterski Club was founded in 1965 and currently has a membership of 65 with a waiting list. They are members of British Waterski, the governing body for this sport. Waterskiing on Batchworth lake is available all year, but from November through to April only at weekends and Wednesday afternoons. The club predominantly offers slalom and wakeboarding from beginner though to competition level. The club owns and operates two competition ski boats.

For further information please call:01923 775319 (The Clubhouse) or 01442-834403 (Club Secretary)www.rwsc.co.uk

Rickmansworth Waterways TrustA voluntary charity based at Batchworth Lock concerned with the preservation of the Canal. Their aim is to excite and inform through the discovery of canals and boats at Batchworth Lock on the Grand Union Canal and to expose schools and the public beyond Batchworth to the environment, history and heritage of the canal.

For further information:www.rwt.org.uk

Rickmansworth Windsurfing ClubRickmansworth Windsurfing Club has been active for 22 years and grew from the windsurfing school on Batchworth Lake. The Club is affiliated to the RYA and hold regular activities such as racing, coaching sessions and fun days usually rounded off with a barbecue. Apart from social sailing, racing takes place every month, interspersed with coastal trips and events arranged to suit all tastes and levels of expertise. A safety/rescue boat is available at the lake, manned by club members as appropriate. The club has use of a clubhouse and extensive board storage facilities in the compound. The members have improved the clubhouse to include changing rooms, showers, a fully fitted kitchen and barbecue area.

For more information please call:01895 674320http://www.ricky-windsurfing.co.uk/

Swan CareSwan Care is a voluntary service run by Lis Dorer, working to treat and care for swans needing help. She runs a sanctuary for rescued swans, working with the Police, RSPCA, RSPB and local vets surgeries to bring them back to full health.

For more details please phone:01442 251961

Three Rivers Radio Controlled Yachting CubThe purpose of Three Rivers Radio Yacht Club is to sail and race radio controlled yachts.These may have a hull length of up to 1500cms and a mast height of up to 2200cms.They are controlled by a hand held transmitter with an aerial length of up to 100cms.Sailing normally takes place on Bury Lake usually twice a week.

For more information please call:0208 8452607http://www.jlmale.freeserve.co.uk/

http://www.jlmale.freeserve.co.uk/

http://www.ricky-windsurfing.co.uk/

http://www.rwt.org.uk/

http://www.rwsc.co.uk/


http://www.outoftownactionsport.com/


Uxbridge RoversPiscatorial – The art of fishing. The fishing rights, for year round fishing, within the Aquadrome are managed by Uxbridge Rovers Angling Society. The Society, initially founded circa 1884, is probably one of the oldest of such organisations surviving in the UK today. The society is committed to promoting fishing as a low cost leisure activity available to all, youngsters, the disadvantaged, the fit and healthy, those who have retired from the stress of the daily working grind, be they of state retirement age or that modern phenomena, the young retire. In addition to the Aquadrome, the society manages local fisheries in Denham, Harefield, Uxbridge and Iver.

For further information please contact:Secretary on 0208 4286781secretary@uxbridge-rovers.fsnet.co.ukwww.uxbridge-rovers.fsnet.co.uk

2.2. Buildings

There are 5 buildings used for Leisure and Recreation purposes:

a. BLYM and Windsurfing (2 adjacent buildings)b. OTAS, NKC and public toilet blockc. Caféd. Waterskiing and public toilets

See Appendix II Map 3

A building survey has been carried out to identify repairs needed and approximate costs involved of maintaining the existing buildings. This means that the approximate cost of maintaining the building over the next ten years can be compared to the suitability of the existing buildings for their purpose and a decision made about whether the building should be repaired or replaced. These costs do not include repairs due to future vandalism or improvements to the buildings required by changed usage or security issues. There may also be other costs in the next ten years that have not been looked at in the building survey, such as expected lifespan or replacement of wiring etc. (See Appendix IV.)

BLYM and Windsurfing BuildingsThese 2 adjacent are used by BLYM and Rickmansworth Windsurfing club. Both buildings contain male and female changing rooms, toilets, kitchen and some general classroom/lounge areas and kit storage.

There are concerns about the age and condition of the existing building as well as changes to legislation requiring separate changing areas for children and adults and proper facilities for those with disabilities.

The cost of the repairs for the buildings identified in the building survey, for the next ten years is approximately £13640.00

This buildings could be extended or replaced, possibly as a combined facility for both clubs with larger, segregated changing facilities.

There have also been problems regarding the car parking arrangements for club members and disabled users, this could be reviewed as part of any plans to change the buildings.

The jetty and slipway need examining to consider repairs or replacement.

OTAS, NKC and Public Toilet BlockThis is a small building, given the number of uses. Out of Town Action sports have a small shop/reception area and limited changing/shower facilities. Nomad Kayak Club have a small changing/storage area. The public toilets are dark and intimidating with poor lighting and a narrow

http://www.uxbridge-rovers.fsnet.co.uk/



corridor. There is also a disabled toilet.

This building is subject to a lot of vandalism, the seating area in an enclosed courtyard gives a feeling of security for those wishing to act in an antisocial manner. The roof of the building was a damaged a few years ago by a falling tree.

The cost of maintaining the existing building identified in the building survey,for the next ten years is approximately £17470

The Disability Access Survey (see Appendix V) identified improvements required to the disabled toilet, there were an improved handrail on both sides, repairs to the sticking door, lack of emergency alarm and inaccessible light switch and toilet roll. Grab rails were also required in the ladies and gents toilets to assist those with limited mobility. Cost for these improvements have not been investigated.

This building could be replaced with a more suitable building.

CaféThe Café is a small building with Kitchen facilities where snacks, ice creams and drinks are sold. In the summer there are picnic tables on hardstanding at the front of the building adjacent to Bury Lake.

There is no publicly accessible shelter or indoor seating which means that people are unlikely to use this facility in cold or wet weather. This building has also suffered from vandalism.

The cost of maintaining the existing building over the next ten years is approximately £6020, in addition to this cost, if the current building were kept it would be advisable to replace the existing door and door frame with a less easily vandalised one made of metal.

The building could be enlarged or replaced to provide indoor seating with an attractive view of Bury Lake. This could be combined with the facilities currently housed with the OTAS/NKC building.

Waterskiing Clubhouse and public toiletsThis building has kitchen, showers and changing facilities as well as the space for seating on the decking outside. At the side of the building is a public toilet and to the other side two metal lock ups for storage of equipment.

A number of recent incidents of vandalism have left concerns about the security of the main building, currently the front of the building is protected by roll down metal shuttering, which is locked in place when the building is not being used. To date there have been no attempts at vandalising or breaking into the lock ups. Vandalism has also occurred to the garage used to store the boats at night and to the sluice gate from the river into Batchworth Lake. In addition to the main building consideration should be given to security measures to protect the garage, lock ups and sluice gate.

The public toilet to the side of the Clubhouse has been subject to constant vandalism over a number of years.

The cost of maintaining the existing building over the next ten years is approximately £9660

Palisade fencing could be used to protect the side and rear of the building, while a secure new outer door could be put in a new position to protect the toilets. This new door would need to be locked at night. The waterskiiers would like in the future to investigate the option of extending the building using their own funds and applying for lottery funding.

2.3. Access

There are a number of aspects of access that can be considered:


Access by Car There are some brown information signs from the M25 Junction, these then swap to white signs with a black arrow simply saying “Aquadrome” as you get to Rickmansworth. The sign at the junction of Harefield Road and Frogmore Lane is a smaller blue sign.

There is a tarmac roadway into the site and a tarmac car park with parking bays made of loose roadstone.

Access by Public TransportAlthough access to Rickmansworth is fairly easy by bus or tube, finding the way to the Aquadrome on arrival at Bus stops or tube station would be difficult. There are few (if any) pedestrian signs.

An investigation could be carried out into the feasibility of new signs for Rickmansworth Town centre and tube station for pedestrians going to the Aquadrome and the possibility of Aquadrome leaflets/information being displayed at the tube station itself.

Walking access There are a number of possible entrances if walking to the site. There is easy access from the town centre after using the crossing at Riverside Drive and crossing the river via the bridge adjacent to the Waterskiiers Club House.

There is no footpath along side the main car access from Frogmore Lane, although it is possible to walk on the grass this would not be suitable for buggies or wheelchairs, particularly in wet weather. The possibility of a surfaced path in this location could be looked at.

The loose roadstone surface of the bays in the car park makes pushing a buggy on this surface difficult.

There are benches across the site, but some areas and paths have less stopping points which may make it difficult for people with limited mobility who need to stop often.

Access for people with a DisabilityAccess from Frogmore lane if walking pushing a wheechair or for someone with limited mobility would be unsuitable due to the lack of path and how steep the sides of the bridge are.

The Car park surfacing, the bays of loose roadstone, makes wheelchair access difficult, but there are four marked bays in tarmac reserved for people with a disability. Once onto the main paths there are a number of routes that can be followed. However different paths have different quality surfacing and it is difficult to know which routes are the best until you try them. Passing places are needed on the more narrow pathways and the path/roadway to the BLYM building has humps in the road, which are difficult to cross for someone in a wheelchair.

Some key locations are difficult to get to, the café and the dog free picnic area for example are surrounded by grass making access, particularly in the wet, difficult. The Bridge from the OTAS building to the café is slippery, dangerous and has no handrails as well as being in a dark location.

The Glade bridge from the area adjacent to Riverside Drive through to the Canal footpath is currently inaccessible to wheelchairs.

Recent towpath improvements have made this path more accessible and a linking path joins it to the Aquadrome car park.

The Disability Discrimination Act makes disabled access a priority, but it also means that there may be some grants available for this type of work.

A disabled access survey has been completed (see Appendix V).

The Glade Bridge needs replacing with a more accessible bridge. The car park could be


resurfaced with tarmac or other more wheelchair accessible materials, the bridge to the café should be replaced or rethought as part of changes to the buildings in this area, new paths could be put in and existing paths repaired or improved.

Information Signs and InterpretationSignage on the site help users unfamiliar with the park to access the facilities as well as providing additional information to enhance their experience (see Appendix II, Map 4).

There are a few waymarkers with EAT on them, but only one sign to explain that this is the Easy Access Trail designed to be accessible to people in a wheelchair.

There are also a number of General Maps with the Bylaws on the back, however these are now old and in need of a clean and possibly a repaint. Often the rear of the sign is inaccessible.

There is one interpretation board, “The Alder Trail” drawing attention to the walk that takes you through the Alder Woodland Area, however there is no sign to tell you when you reach the area itself.

The signs are generally to high for people in a wheelchair or children, signs are reflective and difficult to read for those with a visual impairment.

There are 2 leaflets offering information about the Aquadrome, one is a general leaflet offering location information, opening times and Club contacts. The second leaflet is the Colne Valley Trail, which guides you on a walk around the Lakes.

All of the interpretational material is in the form of text with some pictures, there is no interactive or more visual interpretation, such as sculptures or “touchable” exhibits.

Improvements could include clearer more visual or tactile signage, tactile maps, all signs at a height to be accessible to all, a sculpture or sensory trail and a leaflet could be produced explaining how accessible the Aquadrome is to those in a wheelchair or with limited mobility.

Opening timesThe opening times of the car park can be considered as an issue of access. The opening times are:

January 8am – 4.30pmFebruary First Week 8am – 4.30pm

Rest of Month 8am – 5pmMarch First 3 Weeks 8am – 5.30pm

Rest of Month 8am – 6.30pmApril First 2 Weeks 8am – 7pm

Rest of Month 8am – 7.30pmMay First 2 Weeks 8am – 8pm

Rest of Month 8am – 8.30pmJune 8am – 8.30pmJuly 8am – 8.30pmAugust 8am – 8.30pmSeptember First 3 Weeks 8am – 7.30pm

Rest of Month 8am – 6.30pmOctober First Week 8am – 6pm

Rest of Month 8am – 5.30pmNovember First Week 8am – 5pm

Rest of Month 8am – 4.30pmDecember 8am – 4.30pm

At all other times the car park is locked. Sometimes cars get locked into the car park by accident and there is a fee to be paid to get the car park unlocked. Concerns have been raised that the sign giving the closing time is not prominent enough and that better warning should be given of the


imminent closure of the car park.

2.4. Informal recreation

In addition to Courses and drop-in sessions run by the formal groups, the Aquadrome is used for informal walks, wildlife watching and picnics.

Having a free informal recreational site so close to Rickmansworth Town Centre is incredibly valuable. However it means that facilities for their enjoyment must be maintained and improved. Signage, interpretation and toilets have already been discussed, but also benches, picnic tables, paths and the Play Area.

The play area has a number of different pieces of equipment designed for children of age 6 to 12 years. The site is very accessible from the town centre and is well used by many children and families. Plans are in place to build a new play tower and to repaint all the existing equipment. The current Play Area Development Plan runs from 2002-2007. Before the end of the Play Plan (2007) a new ROSPA inspection will need to be carried out to identify the condition and life expectancy of all the play equipment, this information along with the survey of play area provision will be used to formulate the new Play Plan. There have been some problems with vandalism and some inappropriate usage by older children, some provision for older children have been made at the Aquadrome, but also new equipment has been installed at Scotsbridge Playing Fields and there are some plans for older play equipment at other sites in the District.

Benches have also been the subject of vandalism on a number of occasions, set on fire etc. Recently new benches and a table have been installed that are hoped to be more resistant to vandalism.

The Café is obviously an important facility for informal visitors to the Aquadrome, the strengths and weaknesses of the current arrangement are looked at in 2.2 Buildings.

The Aquadrome has an excellent potential for use in education, both with school groups and older people. Activities already occur on the lakes through the existing groups, but there is an additional possibility of environmental or nature based activities.

The variety of habitats has a wealth subject material, while the high usage of the site means that additional damage to these sites by encouraging visitors is minimal.

Schools could be encouraged to use the site through packs of information giving ideas of what to look for or activities to do, activities could be run by volunteers or if funding were available a Ranger could be employed to run activities. Guided Walks could take place, pointing out features of interest to people of all ages. Ideally the possibility of classroom space could be explored or a visitor centre, open to all.

Seeking Local Nature Reserve status may make more funding and resources available for projects of access and education as well as habitat improvement.


3. Conservation and Maintenance

3.1 Wildlife and Conservation

Lakes and RiverWhile the detail of the water itself is looked at in the Water Quality section 3.3, the ecology of the Lake and River can be considered separately.

The lakes are home to a number of fish, which are in turn food for Herons and Bittern, some of which nest at Stockers Lake. Herons, Bittern, Otters and Water Voles are all priority species in the Biodiverisity Action Plan (BAP), so any activity of these species should be encouraged. There have been reports of Otters at Stockers Lake and it is likely that the river and possibly lakes at the Aquadrome are used to feed even if there is no resident breeding population. There are no known sighting of Water Voles, but due to a lack of survey, their presence can not be ruled out.

One of the biggest threats to Water Voles and Otters in the Colne Valley is the Mink population and while there are no actual sightings their presence can not be ruled out.

In the past there have been Kingfisher breeding sites identified on the islands in Batchworth Lake.

There are a number of Swans, Ducks and Geese. Of which the largest number are Canada Geese, their populations held artificially high due to feeding by the general public. Left over feed unfortunately also encourages Rats. Rats are a particular problem on the river as they carry Weil’s disease, which is a threat for water users. Serious thought need to be given to how to discourage Canada Geese, Rats and Mink, while encouraging more desirable species. Areas of feeding by general public could be restricted to certain areas of the lake, which would then allow left over feed to be disposed of more easily. If the Rat population is high, poisoning may have to be considered, but methods used should prevent other animals being targeted. If Mink are found then humane traps may have to be considered.

Lake edgesThe lake edges includes the shallow area of water and also the banks, which are likely to be wetter than other areas of land.

This area consists of “marginal plants” those that like to grow in or near water, but not fully submerged. It provides a valuable hiding place for animals, fish and invertebrates living in the water, particularly the early stages of damselflies and dragonflies.

Planting in this area increases the oxygenation of the water and also helps to stabilise the banks and prevent erosion.

Grass (mown)The Mown grass areas are primarily a recreational facility for picnics, children's play etc. but they do provide an opportunity for some plants and animals to thrive. Regular cutting imitates the action of constant grazing with animals such as sheep. Grasses tend to dominate, with low-lying vegetation such as plantains, daisy and clover. It also allows moles to easily break to the surface.

Rough areasThese are areas of rough ground that currently have minimal maintenance and little cutting. They tend to be dominated by longer grass, nettles, thistles as well as some wild flowers.

These areas have some value providing food for butterflies and cover for invertebrates, such as grasshoppers and small mammals.

These areas also have Ragwort and Japanese Knotweed. Ragwort is a noxious weed under the Wildlife and Countryside Act (1981) and so there is an obligation on the landowner not to let the plant spread. As the main form of spread is by a fluffy seed this means either killing the plant or removing the flower heads before they seed. If the plant were to spread to areas inhabited by


livestock it can poison the animals sometimes resulting in death. It is also a mild irritant by touch, but some individuals may display an allergic reaction.

Japanese Knotweed is an invasive non-native plant, which to sensitive individuals may cause serious blistering simply by touching it. It is also able to spread via any small part of the plant, any broken part of the stem/root can grow a whole new plant and the roots are very strong and spread some distance.

The rough areas could be cut twice a year to prevent scrub encroachment and noxious weeds and Japanese Knotweed controlled.

WoodlandWhile the trees themselves are addressed in the next section it is worth looking at the woodland as an ecosystem.

The areas of woodland, as opposed to individual trees, provide a rich habitat for plants, animals and invertebrates. The shade of the trees allows a number of plant species to grow that would not thrive otherwise, creating a dense undergrowth, providing cover for small animals with a degree of protection from larger animals and people. As the areas of woodland are relatively small, with paths and clearings creating spaces between them, there is little need for extensive thinning to create gaps in the cover. Some consideration in the long term may be required to assess the age and lifespan of the trees to make sure that an uneven age range ensures the continuing life of the wood.

There is some scope for the gradual removal of trees in the woodland area that are not of a native species to allow the native species trees to flourish and provide greater biodiversity by the invertebrates that they support.

Wet woodlands are a BAP priority habitat, with particular attention to Alder Carr. There is a small area of alder woodland at the Aquadrome which will require some attention to make sure that other species, less appropriate to the habitat do not overtake.

There are a number of Bats feeding and possibly roosting at the Aquadrome, some species of Bats are identified by the BAP, but all species of Bat are protected by law. They should be taken into account, both when carrying out required tree work, but also in maintaining a suitable habitat for them.

3.2. Tree Management

(See Appendix II Map 6)

Parkland treesParkland trees are the individual, specimen trees in the mown grass areas of the Aquadrome. A large number of these are ornamental non-native species.

These should be maintained as “attractive” specimens, generally deadwood removed and shape and balance maintained.

Trees near water edgeTrees close to the waters edge are a particular problem at Bury Lake as they interfere with the wind required for recreational activities, but at both lakes overhanging branches can be a safety issue.

Overhanging trees on Bury Lake can cause a problem for inexperienced sailors, canoeist and windsurfers, but the hazard is partially offset by the fact that inexperienced uses will not be using the lake unsupervised and rescue boats/other users can pull them away from the branches if necessary. However this problem can be reduced by removal of obstructing limbs


Trees around Batchworth Lake provide a sheltered area for waterskiing and fishing, but there are some areas where overhanging branches become a problem. These areas are close to the turning circle of the motorboat and overhanging the fishing bays, tree works can be carried out to remove overhanging or obstructing branches.

While the ideal situation for sailing and windsurfing at Bury Lake would be the removal of all the trees close to the lake, this would not be practical for the visual impact and enjoyment of other users. In addition to this, some low branches at the waters edge provide a habitat and shelter for water birds and the roots of the trees help to stabilise eroding banks. However the intention is to remove particually problematic branches and maintain gaps in the trees to allow wind movement, particularly in an East-West direction.

Woodland areasAs the woodland areas are small and generally inaccessible to the public it is appropriate from an ecological point of view to maintain the woodlands with a minimum intervention approach. This means that deadwood in trees and even whole dead trees are allowed to stand to provide a habitat for insects and so a source of food for birds and other wildlife.

The areas that the public can access are the areas adjacent to paths or grass covered areas. Trees close to these areas should have works carried out to make sure that the safety of the public is not threatened, i.e. removal of large deadwood or dead/dangerous trees.

If any replanting is required in woodland areas it should be with native woodland trees.

Pollarded willowsThere are a number of pollarded willows and while it is not the intention to pollard willows that have not been previously pollarded it is the intention to maintain those that are existing.

These trees can be maintained on a 4-5year rotation, i.e. Pollarded once every 4-5 years, but not all of the pollarding should be carried out in the same year to give a staggered visual effect.

Trees near roadwaysTrees near roadways and paths can be problematic for a number of reasons, firstly as set out in the woodland section, they are a priority with regard to safety, secondly the impact that the tree itself has on the path/roadway itself.

The roadway towards the BLYM base is lifting at the edges, causing bumps in the roadway, which may cause a problem for boats on trailers. This problem is likely to get worse over time, as the trees grow. However the trees serve valuable function, defining the edge of the road in an attractive avenue and preventing cars exiting onto the field beyond. This is particularly useful when this area is used for car parking at events such as the Environment Fair.

However these tree could be selectively replaced with an avenue of younger (possibly native species) trees further back from the road.

3.3. Water Quality

See Appendix VI.

3.3.1. Background

Annually, both lakes at the Aquadrome suffer from the development of blue-green algae (cyanobacteria), Bury Lake to a greater degree than Batchworth.

Like all plants, algae require nutrients to grow and reproduce. Algae are free-floating, so they must get their nutrients from the water. They do not have the ability to obtain nutrients from the pond bottom. The higher the nutrient level in the pond, the more algae there will be.


The development of a cyanobacteria bloom depends upon local conditions and site specific characteristics. But they generally occur where there are high levels of nutrients, principally phosphorus, together with warm, sunny and calm conditions. The bloom will form on the surface of the water and can accumulate downwind forming a scum on the lake shore that looks like blue-green paint. People, especially children, and domestic animals should avoid contact with the concentrated scum, which may be toxic.

Cyanobacterial toxins are the naturally produced poisons stored in the cells of certain species of cyanobacteria. These toxins fall into various categories. Some are known to attack the liver (hepatotoxins) or the nervous system (neurotoxins); others simply irritate the skin. Illnesses such as dermatitis, gastro-enteritis, atypical pneumonia and hepatoenteritis can occur in humans. Symptoms of these include skin rashes, eye irritation, vomiting, diarrhoea, fever and pains in muscles and joints in those that swallow or swim through the concentrated scums. The toxins can also cause severe illness and death to wild, farm and domestic animals.

3.3.2. Factors contributing to current excess nutrient (eutrophication) in the lakes

Bury Lake

WaterfowlHigh concentration of Canada Geese, which are encouraged to the lake through feeding by the general public. Migration of waterfowl is limited to small numbers of geese visiting from a local lake to the south east of this site; however, geese are also fed on this site, limiting the desire for migration for food. A total of 42 Swans and a small population of mallard ducks also inhabit the lake

Water MovementThere is no significant means by which water is circulated throughout Bury Lake. The sluice gate, to prevent water losses into Stockers Lake during the summer period still allows a clear plume of dispersion of the cyanophyta within the overflow channel, where water has escaped.

VegetationThere are signs of vegetation in the small bays surrounding the lake including Elodea and Hornwort, however, it is clear that these are being fed upon and destroyed by the high numbers of waterfowl on the lake. A small area at the eastern end of Bury Lake is planted to rushes & the majority of the perimeter on the northern side of the lake is wooded.

Sludge accumulationAs a consequence of the long term presence of waterfowl the lake has apparently developed a high level of sludge, which has accumulated throughout the entire lake bottom. During the summer where water levels have receded this putrid sludge has been exposed. This material forms a “nutrient reservoir” rich in ammonia and phosphate which is periodically released into the water.

Batchworth Lake

WaterfowlIn contrast to Bury Lake, there are relatively few geese and the odd swan in the lake. The disturbance caused by Waterskiing is the major reason for absence of waterfowl and higher levels of dissolved oxygen in the lake entraining oxygen.

Water MovementAs water is thrown in the air by the waterskiing oxygen is entrained, water in the lake is ‘turned over’ resulting in higher levels of dissolved oxygen than in Bury Lake. However, the activity on the lake is resulting in erosion at the perimeter.

3.3.3. Treatment Options

Primary objective – prevent blue green algae blooms.


Strategy - reduce nutrient levels in the lake and develop balanced eco-system.

Considerations:

v Phosphate levels are at least 10 times greater than trigger level for blue green bloom (circa 227 ug/ml v 20 ug/ml) – Bury Lake

v Ammonia levels are up to 7 times greater than the trigger level for blue green algae bloom (circa 360 ug/ml v 50 ug/ml) – Bury Lake

v In the absence of adequate phosphate several species of blue green algae produce alkaline phosphatase which releases bound phosphate solublising it and making it available for growth

v Anoxic conditions in the lake sediment will accelerate the release of the nutrients ammonia and phosphate, a process which is accelerated by higher summer temperatures – primarily re Bury Lake

v Continued presence of waterfowl will sustain the level of faecal sediment in the lake (200 birds @ 6.5kg per bird = biomass of 1300kg) – Bury Lake

v Low macrophyte levels (aquatic plants, growing in or near water that are either emergent, submergent, or floating) which would otherwise take up phosphate and help reduce residual levels in the lake – Bury Lake

The options of treatment are looked at in detail in Appendix VII , but the conclusion of that analysis is that the following measures (subject to budgetary provision) would provide an integrated programme, taking a holistic, sustainable approach to improving water quality to, and, restoring equilibrium to the lakes.

1.Use of Liquid Live Micro Organism to feed off excess nutrients in lakes2. Bio-remediation – planting reed beds and macrophytes to increase oxygen in lake and at same

time reduce nutrient levels3. Ongoing oiling of eggs (inc Three Valleys Water & Stockers sites, subject to owners’ consent)

& culling under licence & in open season to reduce nutrient input into lakes4. Water sampling programme for phosphate, nitrate, pH levels of lake as well as presence of any

blue-green to monitor effectiveness of measures. Limited monitoring will be carried out by company supplying micro organism before and after treatment to benchmark the success of the product.


3.4 Errosion and Water Levels

In times of high water the river and canal flood into Bury and Batchworth Lake, which in turn floods into Stockers Lake.

This causes a number of problems:1. Erosion of banks and paths2. Flooding of Bury Lake Boat house leading to destruction of property.3. Flooding of Bird nesting sites resulting in lower numbers of birds

On the other hand in the summer water levels in Bury Lake become low, causing a problem for sailors and damage to the bottom of centreboards and rudders.

Coir rolls with native planting can be used to stabilise the banks, larger areas in Bury Lake so that they help to address water quality issues as well, a narrower section in Batchworth Lake so as not to obstruct the use of the lake.

The water flows, both in normal and flood conditions, need to be looked at in more detail. In a number of years when rainfall is high, flooding takes place.

As detailed information is not currently available a Hydrological Engineer’s survey should be undertaken.

3.5. The Bury

The Bury is the area of land between Riverside Drive, Church Lane and Bury Lane, it is the historic grounds of Bury House. It is characterised as parkland with avenues of trees and individual specimen trees.

It is considered appropriate to maintain the formal feel of the area, by reinstating avenues and removing dead or dying trees.

The area of grassland close to the Bury House could be cut regularly, the area between the river and riverside drive could be cut twice a year to prevent shrub encroachment while maintaining a habitat with some cover for smaller species. .

See Appendix II, Map 5

3.6. Grounds Maintenance Contract

The Grounds Maintenance Contract (GMC) sets out the responsibilities of the contractor in the Aquadrome. The Contract runs from 1st November 2003 for 5 years, with the possible extension for another 2 years.

The responsibilities can be summarised under a number of headings:

GrassThe Contract sets out that the grass in amenity areas should be cut regularly and edges between grass and landscape areas edged.

Landscape AreasThese are the areas of flower beds, the contractor should remove weed, deadhead roses, water in dry periods prune to prevent nuisance or danger and maintain a mulch layer.

Rough AreasThe contractor should remove branches overhanging paths to the height of 2.5m, cut tall herbs in March and September and treat noxious weeds and Japanese Knotweed.


Woodland AreasInvasive seedling are to be removed, woodland whip planting where appropriate, tree felling when required are all specified in the contract.

Lakes and DitchesThe contract specifies that Litter should be removed from banks and ditches, unwated vegetation removed from the lakes, barley straw bales administered, bank reinstated where required, once a year scrub and trees blocking fishing bays and views of the lakes should be removed, ditches should have sediment removed.

Hedges and New TreesHedges should be trimmed and where appropriate replanted. New trees should be planted and maintained as appropriate.

Cleansing and ToiletsBins should be emptied, fly-tips cleared and Toilets cleaned and inspected.

SnowIn cases of snow, salt should be applied to hard standing, paths etc.

Special EventsHelp would be required from the contractor with the set up and take down of special events such as the Environment Fair.

StaffThere will be a staff presence at the Aquadrome in case of Emergencies for all the open hours.


4. Resources

There are three revenue budgets currently associated with the Aquadrome, these are:

4. Woodland budget (1471)5. Aquadrome budget (1489)6. Grounds maintenance budget (1473), including the Grounds Maintenance Contract (GMC)

The woodland budget only refers to the woodland areas and other trees. This budget also covers all the other TRDC owned trees in the District.

The Aquadrome budget mostly covers the utility bills for the buildings, but also has some money for the maintenance of the site.

The Grounds Maintenance budget covers all the Parks and Open Spaces in the District, this includes the Grounds Maintenance Contract (GMC), which runs from November 2003 for five years (see section 3.6).

In addition to budgetary resources the Aquadrome has been fortunate in the amount of hard work and resources brought by the volunteers from the licensee groups in repairing, maintaining and improving the site.

This means that any projects not directly funded by existing budgets are dependant on additional funding, either as an internally funded capital project or by putting in for external grant funding or sponsorship.


5. Public Consultation

A Key Issues Discussion Document (See Appendix VIII) was sent out to all the groups of licensees of the Aquadrome, such as Bury Lakes Young Mariners. This document was also given out to members of public at the Environment Fair held at the Aquadrome.

The issue are summarised, but obviously it does not include everything or the detail in which it was looked at, but it gives an idea of some of the concerns raised.

Recreation This section of the responses showed participation in a range of activities from the respondents.

The toilets were mentioned by a number of people, as well as maintenance issues, such as bank shape/erosion and the state of buildings, slipways and jetties. Additional facilities that people wanted included: covered seating, wood carved bins and benches, snackbar/catering facilities, on-site Warden/Ranger, fitness activity course, showers, Visitor Centre, sandpit/paddling pool/play Area, outdoor water tap and a camping area.

There were a number of conflicts between groups expressed, which would perhaps be better dealt with in the Licensee forum rather than by this document.

AccessGenerally the replies showed that most people were happy with access issues, however there were a number of specific issues raised. Most notably was the resurfacing of various paths and the car park itself. More benches were desired around the lake area. The other reoccurring issue was the gates being closed and locking people in, with the possibility of the opening times being extended to avoid this. Very few of those who responded had used public transport. Generally finding the way round the site was not a problem, but possibly some more way markers/signposts would be helpful. There were some problems with car access for club members, including having space to unload.

Nature ConservationGenerally it was agreed that nature conservation was important, but there was mixed opinions about what should be done. Trees were a big issue, but some wanted the trees removed from the waters edge, some wanted more trees at the waters edge, some worried about trees that need works, pollarding etc, some just wanted more trees or concerned about trees that have been felled in the past. Geese, Japanese Knotweed, Water Quality (algae) and Water Level were all listed as problems as well.

Education The responses were generally positive about the ideas of educational involvement, sculpture trails and new interpretation boards.

Advertising/Marketing

Most people heard about the Aquadrome either through a club or activity or by word of mouthThey travelled from Herts, Bucks and London mostly by car.

ForestryThere were mixed opinions about forestry as there were about trees in the Nature Conservation section.

OtherOther issues raised were:Enforcement of BylawsYoung people collecting after the park is closedHaving an Emergency Phone AsbestosVermin (Rats)


6. Site Objectives

Four objectives were put together to try and address the concerns raised in this document. These objectives are setting the priorities for the site as a whole, both now and into the future. The objectives are:

1. To maintain and improve existing habitats, including improved Biodiversity and Woodland Management.

2. To maintain and encourage free, safe access to the public, including people with a disability.

3. To encourage use by educational groups and improve the educational potential of the site, including information and interpretation.

4. To encourage recreational activities by groups and individuals.

In the Action Plan each objective is addresses for the next five years by a series of tasks. Obviously these will be reviewed every year and towards the end of the five years will need to be rewritten, but it is anticipated that the goals of this plan will be taken into consideration during this review.


Appendices

Appendix IByelaws


Appendix IIMaps

1. Map of Habitats2. Map of Geology 3. Map of Buildings and Areas suitable for Redevelopment 4. Map of Furniture, Signs and Paths5. Map of The Bury6. Map of Tree Works


Appendix III

Species Lists

Species noted on 5th August 2003

TreesAcer campestre Field MapleAcer pseudoplatanus SycamoreAcer spp. Silver MapleAlbies spp. FirAlnus glutinosa AlderAquifolium ibex HollyBuddleia davidiiCarpinus betulus HornbeamFraxinus excelsior AshMalus spp. ApplePopulus spp. PoplarPrunus cerasifera Purple-Leaved PlumPrunus laurocerasus LaurelPrunus spp. Cherry Quercus rober OakRhus typhina Staghorn SumachSalix spp. WillowSambucus nigra ElderSorbus accuparia RowanSorbus aria Whitebeam

PlantsBellis perennis DaisyCarduus spp. ThistleConvolvulus arvensis BindweedEpilobium angustifolium Rose-Bay Willow-HerbGeum urbanum Wood AvensHedera helix IvyHeracleum sphondylium Cow ParsleyIris pseudacorus? IrisMentha aquatica Water MintMyosotis scorpioides Water Forget-Me-NotPlantago media PlaintainPolygonum lapathifoium Pale-Flowered PersicariaRosa canina Dog RoseRosa RogosaRubus fruticosus BrambleRumex spp. DockScirpus lacustris Bulrush Senecio jacobaea RagwortTaraxacum officinale DandelionUrtica dioica Nettle Valeriana officinalis ValerianGrass

Birds and AnimalsSwan MallardsCoot


HeronCanada GeeseGrebe Moor HenCoal TitGreat TitWood PigeonMole

InsectsBanded DamiselleCommon Blue DamselflyRed AdmiralLarge WhiteCricket/Grasshopper (heard not seen)


Appendix IV

Building Survey Summary


Appendix V

Disability Access Survey


Appendix VI

Procedure for Managing Water Quality Issues

The water quality issues are addressed by implementing a series of Risk Assessments. Firstly the TRDC risk assessment for minimising the risk of Blue Green algae and secondly the risk assessments of the clubs using the lakes to minimise the risk of people using the lake being affected by Blue Green algae.

The Clubs Risk Assessment is the minimum standard that they would apply in any practical situation. The reality is that the clubs are likely to apply a standard far higher than outlined in the risk assessment. Anyone participating in activities with any of the Clubs could ask for further information from the individual clubs.

In addition to this is the agreed procedure for managing the swans and notices and publicity in the event of an algae outbreak in the Aquadrome.

If there should be any changes to procedure or current health advise, all the clubs and licensees should be informed.

1. TRDC Risk Assessment 2. Club Risk Assessments3. Swan Procedure4. Notices 5. Press release


Club Risk AssessmentsBLYM Risk Assessment

Venue Bury Lake, Rickmansworth Aquadrome

Assessor’s Name Alan Russell

Assessor’s Signature

Date of Risk Assessment 7 July 2004

Persons Affected Users of sailing dinghies and powered rescue craft

Hazard Presence of blue green algae

Risk Possible ill-health from extensive contact or ingestion

Control Measures

Stage 1 – low concentration

Advise participants not to make un-necessary contact with lake water. Emphasise even more strongly normal hygiene precautions (cover open scratches etc. with a waterproof plaster; wash hands when coming off the water; shower thoroughly if immersed during activity).

Stage 2 – concentration above health warning level

All participants to read information leaflet and sign disclaimer. Adult to sign for anyone under 18. Plan activity to minimise likelihood of contact with water (e.g.: use boats less likely to capsize; reef [reduce] sails to avoid accidental capsize; wear waterproof clothing to reduce skin contact with lake water; wash down boats and clothing with clean water after activity).

Stage 3 – presence of toxic scum on lee shore [edge of lake]

Declare affected parts of the lake as no-go areas, post details on blackboard in Briefing Room and ensure all participants are aware. Use rescue boats to escort any sailing boat accidentally straying into an affected area.

Stage 4 – presence of toxic scum over whole of lake surface

Suspend sailing.

Risk ScoreStage 1 (on 07.07.2004)

Stage 2

Stage 3

Stage 4

Severity x2

2

3

4

Likelihood =1

2

3

4

Total2

4

9

16

Action required Duty Warden to re-assess on a daily basis and put appropriate controls in place.


Rickmansworth Waterski Club Risk Assessment

List hazards here

List groups of people/

individualswho are

especially at risk from

the significant hazards

which youhave

identified

List existing controls here or notewhere the information may be

found

List the risks which are not

adequately controlled and the action to be taken

where it is reasonably

practicable to do more. You are

entitled to take cost into account,

unless the risk is high

Presence of naturally occurring potentially toxic blue green algae blooms April to October – ingestion of, immersion in or prolonged skin contact with water containing blooms resulting in adverse health affects in humans such as:1. Skin rashes2. Eye irritation3. Vomiting4. Diarrhoea5. Fever6. Muscle and

joint pain

Adverse health affects in animals:2. Liver or

nervous system damage – possibility fatal

Members, guests of members and visitors of RWSC using Batchworth Lake

Preventing contact/ingestion in presence of algae on lakes:

Lab results confirm algae colony concentrations below health trigger threshold levels (stage 1) - RWSC notifies members via a newsletter and copies of the pre-approved posters to be shown on the Club notice board. Lab results confirm algae colony concentrations at a mature stage (stage 2/3) notify members via another newsletter and updated poster on the noticeboard this will include detailed information on blue/green to enable them to make an informed decision should they wish to continue skiing. At this stage the Club will be closed to visitors and members guests.v Lab results confirm algae colony

concentration at levels that exceeds health warning levels (Stage 4) immediately notify members via letter (and another poster on the Club noticeboard) that until laboratory analysis confirm colony concentrations below health trigger threshold levels their will be no further waterskiing on Batchworth lake.

Minimising occurrence by working with TRDC to reduce nutrient levels in lake (nitrates & phosphates). TRDC plans include:

3. Advising the members and general public against feeding waterfowl.

Guidance to members

General Guidanceo Always use a wetsuit and life jacketo Avoid ingestion of lake watero Thoroughly rinse wetsuit and other equipment off after

skiingo Wash hands after cleaning equipment o Always shower immediately after skiingo Hygene precautions, cover open scratches with a


waterproof plastero Advise members of the indicative effects via a poster

on the noticeboardo No swimming in Batchworh Lakeo Waterskiing is at the participants own risko Advise members that a RYA newsletter on blue/green

algae is available to readAdditional Guidance at:

Stage 1v Communicate the General Guidance points in the

newsletter and put a copy on the Club noticeboard for guests and visitors to read

v Drivers to be briefed to also communicate the existence of algae to members

Stage 2/3v Copies of the TRDC stage 2/3 poster to be posted to all

members and an additional copy pinned to the Club noticeboard

v All members to be posted a copy of the RWSC version of the RYA information leaflet

v A disclaimer will be required to be signed by all members or guardians if under 18

v On a daily basis identify areas polluted by toxic scum and advise the drivers not to drop a skier off to rest in these areas

Stage 4o Issue a letter to all members advising that all skiing

has stopped until further notice

Three Rivers Radio Yacht Club - Risk Assessment

Venue Bury Lake, Rickmansworth Aquadrome

Assessor’s Name Keith Allen

Date of Risk Assessment 22 July 2004

Persons Affected Users of radio controlled yachts and electrically powered rescue craft


Data Required Three Rivers Council to advise Three Rivers RYC on quality of water


Control Measures Stage 1 – low concentrationAdvise participants not to make un-necessary contact with lake water. Emphasise even more strongly normal hygiene precautions (cover open scratches with a waterproof plaster; wash hands after coming into contact with lake water; etc.)

Stage 2 – concentration above health warning levelAll participants to read information leaflet and sign disclaimer.Parent or guardian to sign for anyone under 18. Plan activity to minimise likelihood of contact with water. Wipe boats after


activity.

Stage 3 – presence of toxic scum on edge of lakeDeclare affected parts of the Three Rivers RYC sailing area asno-go areas. Suspend sailing.

Hazard Radio aerials

Risk Eye damage

Control Measures All transmitters are required to have a soft safety ball on the end of the aerial at all times

Hazard Rescue boat

Risk Possible personal injury

Control Measures

The club has a rescue boat for occasional use to rescue out of control yachts and set out course marks. The boat is of GRP construction and has inbuilt buoyancy. The boat is inspected and maintained by Club members at intervals throughout the year. ALL users of the boat are required to wear buoyancy aids while on the water. Waders are not allowed to be worn while in the boat.

Hazard Yacht launching

Risk Possible personal injury

Control Measures

Yachts are normally launched from the purpose built jetty or from the bank. The jetty was built by the club members and is regularly maintained by them. Launching from the bank is done wearing waders. Contact with water is minimal apart from hands. The surface of the concrete launching jetty is regularly swept clear of goose droppings during that season to avoid slippery patches. A small first aid kit is available by the lakeside but most members have better ones in their cars.

Third Party InsuranceThree Rivers RYC is affiliated to the national body, the Model Yachting Association, and is covered by their Third Party Insurance. This Third Party Insurance also covers visitors to and guests of the Club.

ReviewThis Risk Assessment will be reviewed by the committee of the Three Rivers RYC on at least an annual basis.

Venue Batchworth Lake, Rickmansworth Aquadrome

Assessor’s Name Laurence Dalton

Assessor’s Signature


Date of Risk Assessment 29th July 2004

Persons Affected Anglers



Control Measures

Stage 1 – Standard procedure to apply prior to health warning being issued.

Advise members not to make un-necessary contact with lake water. Emphasise strongly normal hygiene precautions (cover open scratches etc. with a waterproof plaster; wash or clean hands with antiseptic wipes after coming into contact with the water; shower thoroughly if immersed).

Stage 2 – concentration above health warning level

Members advised to minimise likelihood of contact with water (e.g.: do not enter the water without appropriate footware {boots or waders} to reduce skin or clothing contact with lake water; wash all tackle, clothing and equipment that may have come into with lake water with clean water after fishing).

Stage 3 – presence of toxic scum on lee shore [edge of lake]

Declare affected parts of the lake as no-go areas, Standing instruction to members not to fish from such areas.

Stage 4 – presence of toxic scum over whole of lake surface

Standing instruction to members that fishing is suspended. Fishing may continue on the River Colne.


Swan Procedure

In the event of high blue green algae the following procedure should be used.

1. No action should be taken until the first Swan mortality2. At the event of a swan mortality the body should be recovered and Swan care contacted to

arrange a post mortem.3. If a second swan dies and both post mortems show blue green algae to be the cause of death

then consideration should be given to evacuating the swans.4. Any evacuation of swans should be arranged under the supervision of Swan Care to a chosen

local Swan sanctuary5. After the level of algae have dropped the swans should be returned under the supervision of

Swan Care.


Appendix VII

Options Appraisal for Water Quality


Appendix VIII

Public Consultation

Key Issues Discussion Document


Appendix IX

Bibliography

Clapham, A.R., The Illustrated Book of Trees, Peerage Books, 1975Johns, Rev.C.A. Flowers of the Field, Routledge and Kegan Paul Ltd, 1949.Philips, N. The Aquadrome Buildings, Stimpsons Chartered Surveyors, 2004Scott, T.H. and Stokoe, W.J. Wild Flowers of the Wayside and Woodland, Federick Warne and Co

1966.Three Rivers District Council, Access Audits, Three Rivers District Council, Contract for Management of Grounds within Rickmansworth Aquadrome, 2003

Websites

www.Blym.org.uk – Burly Lake Young Marinerswww.nomadkayakclub.co.uk – Nomad Kayak Clubwww.outoftownactionsport.com - Out of Town Action Sportswww.rwsc.co.uk - Rickmansworth Waterski Clubwww.rwt.org.uk - Rickmansworth Waterways Trusthttp://www.ricky-windsurfing.co.uk/ - Rickmansworth Windsurfing Clubhttp://www.jlmale.freeserve.co.uk/ - Three Rivers Model Yacht Clubwww.uxbridge-rovers.fsnet.co.uk – Uxbridge Rovers

http://www.uxbridge-rovers.fsnet.co.uk/

http://www.jlmale.freeserve.co.uk/

http://www.ricky-windsurfing.co.uk/

http://www.rwt.org.uk/

http://www.rwsc.co.uk/

http://www.outoftownactionsport.com/

http://www.nomadkayakclub.co.uk/

http://www.Blym.org.uk/

Documents

Management Plan Template - threerivers.gov.uk · Web viewThe second leaflet is the Colne ... irritate the skin. Illnesses such as dermatitis, gastro ... either through a club or