Scottsdale Irrigation District Overview Document for the Round … · 2018-06-13 · Management Act 1999 and the Irrigation Clauses Act 1973; and • Irrigation Right, ... from the

Scottsdale Irrigation District Overview Document for the Round Two

Landowner Water Sale

Key scheme facts

Volume

Status Design & Approvals

8,600 ML

Irrigable Area 17,500 ha

This document has been prepared to provide a summary of important information relating to the irrigation district.

This document provides general information relating to:• Tasmanian legislation, including the Water

Management Act 1999 and the Irrigation Clauses Act 1973; and

• Irrigation Right, Delivery Right and Connection Agreement contracts relevant to the irrigation district.

Any Tasmanian legislation and contracts relevant to the irrigation district shall prevail over the general information provided in this document to the extent of any inconsistency.

For further information:

www.tasirrigation.com.auwww.waterconnectsus.com.au

or contact Tasmanian Irrigation:03 6398 [email protected] 2, Launceston AirportWestern Junction, TasmaniaPO Box 84Evandale TAS 7212

Version: SIS Water Sale_Round 2 Overview doc_Rev 0 Release date: 14 August 2015

Contents

1. Important information .......................................................................................................................................... 1

2. Scheme overview .................................................................................................................................................. 3

3. Legislative environment ........................................................................................................................................ 4

4. Tasmanian Irrigation .............................................................................................................................................. 4

5. Water entitlements ............................................................................................................................................... 5

6. Water trading ........................................................................................................................................................ 7

7. Water charges ....................................................................................................................................................... 9

8. Transmission Loss ................................................................................................................................................ 11

9. Connections ......................................................................................................................................................... 12

10. Farm Water Access Plans ..................................................................................................................................... 12

11. Pressures ............................................................................................................................................................. 12

12. Property outlets................................................................................................................................................... 13

SIS Trading Zones map

SIS Trading Zones map with estimated pressures (Scottsdale area)

SIS Trading Zones map with estimated pressures (Waterhouse area)

Tasmanian Irrigation Pty Ltd Page 1 of 14

1. Important information

Item Summary

Further

Information

How much water can

the scheme supply?

The scheme is designed to supply 8,600 ML of water each

year over a 120‐day delivery period on which a summer

irrigation season is based. Water is sourced from winter

flows in the St Patricks River catchment.

Section 2

How can I access supply

from the scheme?

Supply from the irrigation district is accessed through

water entitlements. If you do not hold water entitlements,

you may obtain them through water trading or purchasing

them from Tasmanian Irrigation. Short term supply may

also be accessed from Tasmanian Irrigation through ‘spot

purchases’.

Sections 2, 5 & 6

What are water

entitlements?

Water entitlements are either irrigation rights or delivery

rights. Irrigation rights confer entitlements to have an

allocation of water made available for delivery during

each irrigation season. Delivery rights confer entitlements

to a share of the capacity of the scheme to deliver water

within a zone during the irrigation season.

Section 5

What is the reliability

of the irrigation rights?

Irrigation rights in the irrigation district are warranted to

95 per cent average annual reliability on the basis of the

conditions applying at the time reliability was assessed

and on the basis that the scheme continues to operate as

it was originally designed. The warranty does not cover

reductions to reliability arising from climate changes or

other natural causes.

Section 5

What is the term of

water entitlements?

The term of water entitlements is set to match the term

of the water licence issued under the Water Management

Act 1999 (“WMA”) which will underpin the irrigation

district’s supply. The term of water licences are 40‐years

with provisions for the renewal of water licences set out

in the WMA.

Section 5

Are there any eligibility

requirements to

holding water

entitlements?

Tasmanian Irrigation may refuse to issue water

entitlements, or approve a transfer of water entitlements,

on the basis of credit worthiness. Aside from this, there

are no specific limitations on who may hold water

entitlements.

Section 6

Do water entitlements

provide ownership over

infrastructure?

The infrastructure of the irrigation district is owned by

Tasmanian Irrigation on behalf of the Tasmanian

Government. Water entitlements provide rights to a

supply of water from the irrigation district.

Section 5

Are there costs

associated with holding

water entitlements?

Water entitlement holders are required to pay annual

water charges made up of fixed charges levied on water

entitlement holdings and variable charges levied on water

supplied.

Section 7


Item Summary

Further

Information

Do I have to pay

charges if I don’t use

water?

Fixed charges are payable on water entitlement holdings

regardless of whether water is supplied. However,

variable charges are only payable on water that is actually

supplied.

Section 7

Is GST payable on

water charges?

The supply of water is not currently subject to GST. Should

the GST treatment of water change, GST may be collected

in the future.

Section 7

Are water entitlements

tradable?

Water entitlements can be held by anyone and are

tradable within the irrigation district on a temporary or

permanent basis. The extent of the tradability of water

within the irrigation district is based on the zone

nomination of delivery rights.

Section 6

Why does the scheme

have zones?

Zones arise because of variations in pipeline diameters

and other factors that limit the capacity of the scheme to

deliver water to different parts of the irrigation district.

Sections 5 & 6

Is anything else

required to use water?

In addition to holding water entitlements, to take water

from the scheme you will require a property outlet, a

connection agreement and farm water access plan.

Sections 9 & 10

What is a connection

agreement?

A connection agreement provides the link between water

entitlements and land by specifying the location at and

terms under which water can be taken from the scheme.

Section 9

What is a Farm Water

Access Plan?

A Farm Water Access Plan is a management tool that

identifies and manages environmental risks associated

with the application of water. Its purpose is to

demonstrate that the use of water is sustainable and

complies with Australian and Tasmanian Government

requirements.

Section 10


2. Scheme overview

Project Summary

The Scottsdale Irrigation Scheme (SIS) is based on a 9,300 ML dam on Camden Rivulet, 18 km south

of Scottsdale in north‐east Tasmania, which would deliver 8,600 ML a year (before transmission

losses). Water will be distributed via a 57‐km underground pipeline network and three local

waterways. The scheme incorporates a mini‐hydro power station which will provide benefits to

irrigators through a lower pumping charge for water supplied during the summer irrigation period

and a sharing of the gross revenue stream from the generation of energy which will reduce annual

fixed charges for irrigators.

Project Description

This scheme will require a 9,300 ML dam to be filled from winter flows from the Camden Rivulet,

which are surplus to environmental and water licence requirements. A two‐way pipeline from the

dam to a pump station located on the St Patricks River will enable supplementary filling of the dam

using surplus winter flows. This will meet Tasmanian Irrigation’s objective of 95 per cent average

reliability of supply.

During the summer irrigation season, water from the dam will be released via the two‐way pipeline

to the St Patricks River pump station. That will pump water over a 50‐metre rise before descending

300 meters to a 2,000 KW mini‐hydro power station located immediately above the existing

Headquarters Road Dam.

Water will be discharged from the mini‐hydro station into Headquarters Road Dam, which will act

as a balancing storage and header tank. From Headquarters Road Dam water will be supplied

irrigators at Scottsdale, Springfield and Waterhouse via a combination of 50 km of underground

pipeline and three natural watercourses.

The district has a highly productive agricultural base with significant potential to grow and diversify,

offsetting and reversing recent economic declines. Approximately two thirds of the water from the

scheme will be applied to pasture based enterprises (dairying, livestock finishing) with a third to be

used for poppies, potatoes and fresh vegetable production.

The project will be an important driver of economic growth in north‐east Tasmania, with direct

benefits flowing to the larger population centres of Scottsdale and Bridport and also to the rural

communities in Springfield, Nabowla and Waterhouse. Increased expenditure by irrigators will also

benefit contractors, agricultural suppliers, business service providers and retail businesses in the

local district.

For reference, a map illustrating the infrastructure of the irrigation district and the water delivery

zones may be found at the end of this document.


3. Legislative environment

In Australia, water is managed by each state and territory in accordance with the Inter‐

governmental Agreement on a National Water Initiative. In Tasmania, water is governed by the

Water Management Act 1999 (“WMA”).

Under the WMA all water resources in Tasmania are vested in the Crown. The Minister for Primary

Industries and Water may grant rights to take water under a system of water licences. Water

licences are currently administered by the Department of Primary Industries, Parks, Water and

Environment (“DPIPWE”).

Where an irrigation district is established, the rights arising under a water licence (or an agreement

deriving from a water licence) may be broken into individual shares and issued as irrigation rights.

Irrigation rights are administered by entities (such as Tasmanian Irrigation) who are responsible for

operating irrigation districts.

Water licences and irrigation rights are statutory water entitlements. They are transferable and

separable from land. The irrigation schemes owned, operated and developed by Tasmanian

Irrigation use irrigation rights as the statutory basis for water entitlements.

4. Tasmanian Irrigation

Tasmanian Irrigation is a state‐owned company responsible for developing and operating irrigation

schemes in Tasmania. As at August 2015, Tasmanian Irrigation has built and operates twelve

irrigation schemes, owns the infrastructure of two locally managed schemes, and is at various

stages of developing a further five schemes known as "Tranche Two".

The capital cost of the irrigation schemes currently being developed by Tasmanian Irrigation is a

shared partnership between the public and private sectors. A total of $220 million has been made

available by the Australian and Tasmanian Governments for Tasmania Irrigation's Tranche one

schemes which are nearing completion. Private investment is raised through the sale of water

entitlements. An additional $90 million of public funding has been made available to Tasmanian

Irrigation to complete Tranche Two.

The irrigation schemes currently being developed by Tasmanian Irrigation are designed to last 100

years, deliver water at an average annual reliability of at least 95% and are built to satisfy demand

in each region, with a threshold level of private commitment required before construction begins.


5. Water entitlements

Water entitlements are either irrigation rights or delivery rights.

Irrigation rights

Irrigation rights in the irrigation district will be issued under the Irrigation Clauses Act 1973 (“ICA”)

and are subject to the terms of the agreements titled “Irrigation Right: Scottsdale Irrigation

District”.

Irrigation rights confer entitlements to have an allocation of water made available for delivery

during each irrigation season. The entitlement arising under irrigation rights is defined as a volume

and denominated in megalitre (ML) units.

The allocations made to irrigation rights for an irrigation season are calculated by multiplying:

the entitlement held under irrigation rights on the opening day of the season; and

the allocation percentage notified by Tasmanian Irrigation before the start of the season

and any revision made to the allocation percentage during the season.

If revisions are made to the allocation percentage during a season, the resulting allocations will be

made on the basis of the entitlement held under irrigation rights on the day the revision is notified.

Irrigation rights do not provide secure rights to have water delivered but do so when held in

conjunction with delivery rights.

Reliability

Irrigation rights in the irrigation district are warranted to 95 per cent average annual reliability on

the basis of the conditions applying at the time reliability was assessed and that the scheme

continues to operate as it was originally designed. The warranty does not cover reductions to

reliability arising from climate changes or other natural causes.

95 per cent average annual reliability means that, during 100 consecutive irrigation seasons, the

sum of the allocations made to irrigation rights will be equal to or higher than 95 per cent of the

sum of the entitlements on issue over that same period without the allocation percentage

exceeding 100 per cent of entitlements in any season.

Irrigation season

The irrigation season for the irrigation district is determined each year on the basis of the prevailing

seasonal conditions and in consultation with irrigators. Each season will remain open for a

minimum period of 150 days (nominally 1 December to 30 April), but may be brought forward or

extended if warranted by demand and agreed by the scheme manager. The allocations made to

irrigation rights during an irrigation season are valid for use or trade during the whole of the

season.


Delivery rights

Delivery rights in the irrigation district are subject to the terms of agreements titled “Zoned Flow

Delivery Right: Scottsdale Irrigation District”.

Delivery rights confer entitlements to a share of the capacity of the scheme to deliver water within

a zone during each irrigation season. The entitlement arising under delivery rights is defined as a

flow rate and denominated in megalitre per day (ML/day) units.

As the delivery capacity of the scheme is not subject to seasonal variation, the allocation made to

delivery rights for each irrigation season will equal 100 per cent of the entitlement held under

delivery rights on the opening day of the season.

Delivery rights provide assurance that capacity is available to deliver water at a set rate, when and

to where it is required. Flow rate entitlements give certainty over the timing of supply and

introduce a tradable product through which irrigators can plan water deliveries, manage seasonal

risks and maximise the benefit of their entitlements.

Zones

Delivery rights carry a zone nomination which relates to the zones of the scheme as shown on the

map of the irrigation district at the end of this document.

Zones arise because of variations in pipeline diameters and other factors that limit the capacity of

the scheme to deliver water to different parts of the irrigation district. Each zone originates from

the supply point to the irrigation district (i.e. the Camden Rivulet Dam) and extends to the furthest

downstream point of the zone as shown on the map.

A water entitlement holder is able to fully trade with all other water entitlement holders in their

same zone. Restrictions will apply to tradability with other zones. In general, the size of the

pipeline is reduced in stepped increments down the pipeline. As such, in most circumstances it is

possible to trade water upstream in the pipe, but not downstream. For example, water can be

traded from Main 3 zone back upstream to Main 2 zone, but not vice versa.

Term of water entitlements

The term of the water entitlements issued in the irrigation district is set to match the term of the

water licence issued under the WMA which will underpin the irrigation district’s supply. The term

of water licences are 40‐years with provisions for the renewal of water licences set out in the

WMA. If the term of the water licence that underpins the irrigation district’s supply is extended, the

term of water entitlements issued in the district will be extended by the extended term of the

water licence.


6. Water trading

Irrigation rights and delivery rights are tradable within the irrigation district in accordance with the

ICA and the Trading Rules for the irrigation district.

Trades are made by transferring volume between irrigation rights and flow rate between delivery

rights. To take effect, a transfer must be approved by Tasmanian Irrigation and recorded in the

water entitlements register for the irrigation district.

Trade types

There are two categories of trades – entitlement trades and allocation trades – and three types of

transfers – permanent transfers, limited term transfers and short term transfers. Entitlement

trades include permanent and limited term transfers, while allocation trades refer to short term

transfers.

Entitlement trades are transfers of the volume and flow rate entitlements held under irrigation

rights and delivery rights. A permanent transfer (sale) will result in an absolute change in the

ownership of entitlements, while a limited term transfer (lease) will result in a change in ownership

for a defined period of time.

Allocation trades refer to transfers of the volume and flow rate allocations that have been made to

irrigation rights and delivery rights for a particular irrigation season. Because allocations are made

on the first day of a season, short term transfers will necessarily take effect entirely within one

season.

Tradability

The tradability of water within the irrigation district is regulated through the zone nomination of

delivery rights. A transfer of flow rate will only be approved if:

in the case of permanent transfers, the zone nomination of the transferor’s delivery right

is the same as the zone nomination of the transferee’s delivery right;

in the case of limited term or short term transfers, the zone nomination of the transferor’s

delivery right is the same as or compatible with the zone nomination of the transferee’s

delivery right; or

Tasmanian Irrigation approves the transfer on the basis that it does not exceed the

capacity limitations of the scheme taking account of all other delivery rights issued.

Conditions

Important additional conditions to Tasmanian Irrigation’s approval of transfers include:

that all money owing to Tasmanian Irrigation by the transferee and transferor is paid;

that the sale price of the transfer is disclosed;

in the case of transfers exceeding 12 months, that the transfer is consented to by the

holders of any registered security interests;

in the case of a permanent transfer, Tasmanian Irrigation is satisfied as to the credit

worthiness of the transferee; and

in the case of limited and short term transfers, the transferor remains liable for all money

not paid by the transferee in relation to the transferred entitlement or allocation.


To assist buyers and sellers of water entitlements establish connections, Tasmanian Irrigation has

launched the Tasmanian Water Trading Notice Board. The Notice Board allows parties to advertise

their interest in buying, selling or leasing water entitlements.

If you would like to place an advertisement on the Notice Board or view advertisements that have

been posted to the Notice Board by other parties, you can access the Notice Board via Tasmanian

Irrigation’s website at www.tasirrigation.com.au.

The Notice Board is a free service provided by Tasmanian Irrigation in support of the development

of the water market in Tasmania.


7. Water charges

The on‐going costs associated with the irrigation district and its related infrastructure are funded

through annual water charges, which comprise of fixed and transfer charges that are levied on

water entitlement holdings and variable charges that are levied on actual water supplied.

Tasmanian Irrigation has prepared estimates of water charges to assist interested parties to

forecast the likely future costs associated with holding water entitlements and being supplied with

water from the irrigation district. The estimates are based on cost information for 2013‐14.

Please be aware that the charges are estimates only and subject to change, and will be determined

each year on the basis of costs applying at that time.

The supply of water is not currently subject to GST and accordingly Tasmanian Irrigation does not

collect GST in respect of the water charges. Should the GST treatment of water change, GST may be

collected in the future.

Fixed charges (operations and maintenance)

Scottsdale Irrigation District: fixed charge estimates*

Charge type Zone Minimum

Charge**

Maximum

Charge***

Fixed Charge

All zones (general charge)

$63.43/ML $63.43/ML

less Energy Rebate ‐$12.46/ML $0.00/ML

Net Fixed Charge $50.97/ML $63.43/ML

* Water charges estimated in 2013‐14 dollars

** Assumes full 8,600ML scheme water usage and therefore full $12.46/ML Energy Rebate applied

*** Assumes minimal scheme water usage and therefore nil Energy Rebate applied

Fixed charges include an operations and maintenance charge, telemetry and asset renewal levy.

These charges are levied on water entitlement holdings and are payable regardless of whether any

water is supplied.

The operations and maintenance charge recovers the fixed costs associated with the irrigation

district, including costs associated with employee entitlements, vehicles, plant and equipment,

routine maintenance, compliance, administration, finance and insurance.

The asset renewal levy provides for refurbishment and replacement of significant scheme assets

and funds that may be made available in the unlikely event of a major scheme failure. Funds

collected through the levy are set aside in an asset renewal reserve for the benefit of the irrigation

district.

The gross energy revenue from the mini‐hydro will be shared between Tasmanian Irrigation and

water entitlement holders based on contribution to capital expenditure and is provided to water

entitlement holders as an energy rebate. The revenue generated is directly related to the amount

of water used by the scheme. The water entitlement holders share equates to $0.00/ML in a year

when no scheme water is used and up to $12.46/ML (assuming production of 5.36 GWh and a

wholesale energy price of $45/MWh plus Renewable Energy Certificates of $35/MWh) when the

full 8,600ML is used. In practice the energy rebate will lie somewhere within this range and would

be applied annually in arrears.


Transfer charge (dam fill)

Scottsdale Irrigation District: transfer charge estimates*

Pump Station Zone Charge

St Patricks All zones (general charge) $15.24/ML


The transfer charge is also payable regardless of whether water is consumed and is calculated as

the annual cost required to be recovered on each water entitlement to pay for the cost of

supplementing inflows into Camden Rivulet Dam by pumping water from the St Patricks River.

Apart from the first irrigation season, it may be possible to avoid paying the transfer charge if a

nomination is made ahead of the pumping season that water is not required for the following

irrigation season.

Modelling of winter flows under the CSIRO’s “historic (current) climate” scenario shows that, on

average, approximately 5,665 ML of water will need to be pumped annually from the St Patricks

River to underwrite 95% reliability.

The winter dam fill pumping cost for the St Patricks pump station of $23.13/ML equates to the

winter retail electricity price ($0.17/kWh) multiplied by the electricity consumption rate

(3.83/kWh/m) multiplied by the pumping head (35.5m). For a forecast average pumping year of

5,665 ML, the winter dam fill cost of $23.13/ML would equate to an average charge of $15.24/ML

of entitlement (i.e., $23.13 * (5,665ML/8,600ML)).

Variable charges (scheme supply)

Scottsdale Irrigation District: variable charge estimates*

Pump Station Zone Charge

St Patricks All zones (general charge) $8.36/ML

Waterhouse Waterhouse 1 & 2 (surcharge) $29.89/ML


Variable charges are payable on water supplied and vary across the scheme to reflect differences in

the cost of supplying water to different parts of the irrigation district. Variable charges recover the

costs associated with pumping water through the pipeline distribution network and are only

payable for water used by the irrigator. If you do not use any water in a season you will not have to

pay any variable charges.

The pumping charge for the St Patricks pump station of $8.36/ML equates to the summer

wholesale electricity price ($0.045/kWh) multiplied by the electricity consumption rate

(3.83/kWh/m) multiplied by the pumping head (48.5m) and is a general charge applied to water

users in all zones. As the St Patricks pump station is directly connected by transmission line to the

mini‐hydro power station, the wholesale electricity price may be applied during power production

periods. Other scheme pump stations detailed below, which are not directly connected by power

transmission line to the mini‐hydro power station, are subject to the retail electricity price.


The pumping charge for the Waterhouse pump station of $29.89/ML equates to the summer retail

electricity price ($0.13/kWh) multiplied by the electricity consumption rate (3.83/kWh/m)

multiplied by the pumping head (60m) and is a surcharge to Waterhouse 1 & 2 zone users only.

Total charges

Scottsdale Irrigation District: total charge estimates*

Supply Zone Minimum

Charge**

Maximum

Charge***

Austin 1; Austin A; Brid River; Camden 1&2; Great Forest River; Hurst Creek;

Jetsonville 1&2; Jetsonville A&B; Lietinna 1&2; Main 1,2,3,4&5; Main A. $74.57/ML $87.03ML

Waterhouse 1 & 2 $104.46/ML $116.92/ML


** Assumes full 8,600ML scheme water usage and therefore full $12.46/ML Energy Rebate applied

*** Assumes minimal scheme water usage and therefore nil Energy Rebate applied

The forecast total charge for each supply zone comprises the fixed charge plus the transfer charge

plus the relevant variable charge for that zone.

8. Transmission Loss

Where water is delivered using a natural watercourse, transmission losses will be incurred from the

point at which it is released into the watercourse to the point at which it is extracted. These losses

primarily due to seepage into stream banks and the groundwater system. The losses will be

deducted from the amount of water that can be taken by an irrigator receiving water from the

river.

Transmission losses will be determined by DPIPWE under a watercourse authority to be issued to

allow the transportation of water from the scheme along watercourse. It is anticipated that the

following transmission losses will be applied: Brid River 0%; Hurst Creek (downstream of the dams

in the upper catchment) 0%; Great Forester River (Headquarters Road dam to Mackenzie Rivulet)

0%; Great Forester River (Mackenzie Rivulet to Parrs Rivulet) 10%; Great Forester River

(downstream of Parrs Rivulet and including the Waterhouse pipeline) 15%.

Although Tasmanian Irrigation expects that the transmission losses detailed above will be used in

determining the losses to be applied in the watercourse authority, it is unable to warrant those

transmission losses. In particular, the losses may be revised by an amendment to the watercourse

authority by DPIPWE if it is demonstrated that the losses specified in a watercourse authority are

incorrect in practice.

What transmission losses mean is that, for example, if you purchase 100 ML of water entitlements

in either the Great Forester River or Waterhouse supply zones, you will only be allowed to take 85

ML if all of the water is extracted within the 15% loss area.

Importantly, the fixed charge and transfer charge will be payable on the full 100 ML of water

entitlements held and the variable charge will be payable on the full amount of water released into

the Great Forester River.


9. Connections

The water entitlements issued in the irrigation district are separate from land.

To access water from the irrigation district, a connection to a pipeline of the scheme needs to be in

place and associated with water entitlements through a connection agreement.

Connection agreements specify the location at which water may be accessed from the scheme, and

contains the terms and conditions of taking supply through a property outlet.

An important condition of connection agreements is that water taken from the irrigation district

may only be used on land that is covered by a Farm Water Access Plan (see section 10 below).

To discuss connection requirements, please contact Tasmanian Irrigation.

10. Farm Water Access Plans

A Farm Water Access Plan must be in place for every property that receives water from the

irrigation district.

Farm Water Access Plans are management tools demonstrating that the use of water is sustainable

and complies with Australian and Tasmanian Government requirements. The plans contain soil,

water and biodiversity modules and specify management actions where environmental risks

associated with irrigation are identified.

Farm Water Access Plans are completed by pre‐qualified consultants authorised by the Minister for

Primary Industries and Water. To keep costs to a minimum, Tasmanian Irrigation is able to assist

with the preparation of maps and baseline information required to complete farm water access

plans and can arrange for tendering work to the pre‐qualified consultants.

As an indication of the cost of preparing a Farm Water Access Plan, the net cost to landholders to

date has generally been $2,200 (inc. GST) or less, although this cost has included a $1,000.00

subsidy from the Tasmanian Government which has not currently been committed for unfunded

projects. This figure is provided as a reference only. The actual cost to prepare a Farm Water Access

Plan may be higher and will be determined at the time a quote is sought from a pre‐qualified

consultant.

Amongst other things, the factors affecting the price of Farm Water Access Plans include:

the size of the area to be assessed;

existing land capability data for the area to be assessed; and

the likelihood of threatened species, ecological communities or other matters of

environmental significance occurring in or near the area to be assessed.

Tasmanian Irrigation is required to conduct random annual audits of Farm Water Access Plans each

year to ensure compliance.

11. Pressures

Tasmanian Irrigation guarantees a minimum pressure of 5 m head (equivalent to 49 kPa or 7 psi) at

each property outlet connected to a pipeline of the scheme.

However, the actual pressure experienced at a property outlet may be higher depending on the

proximity of the outlet to a pump station or pressure reducing valve, the relative height of the

outlet and can also vary depending on where and how much water is being taken elsewhere in the

scheme.


To assist irrigators to understand the range of pressures that may be experienced at an outlet,

Tasmanian Irrigation has prepared estimates of the range of pressures that are likely to be found

at different points along the pipeline alignment.

The provision of information on pressures is given on the basis of the current scheme design and

will not in any way limit the ability of Tasmanian Irrigation to amend the scheme design nor does it

create an obligation on Tasmanian Irrigation to warrant those pressures.

The only obligation that Tasmanian Irrigation will assume in relation to pressure is an obligation to

supply a minimum pressure of not less than 5 m head (equivalent to 49 kPa or 7 psi) at each

property outlet connected to a pipeline of the scheme.

Information on pressure estimates can be found on the map of the irrigation district at the end of

this document. If required, additional information on pressures can be provided by Tasmanian

Irrigation on request.

12. Property outlets

As part of the sale of water entitlements, Tasmanian Irrigation will install one property outlet for

each parcel of contiguous (adjoining) land that is operated as the same business.

A parcel of land is considered to be contiguous if it is operated as the same business,

notwithstanding the underlying title ownership of the land. Land may be considered contiguous

even if intersected by a road, railway or any other land unless the effect of the intersection is to

practically sever it for operational purposes. Clarification as to whether land is contiguous can be

provided by Tasmanian Irrigation on request.

Each property outlet supplied as part of the sale of water entitlements will be capable of delivering

at least three times the purchased flow rate, subject to any capacity constraint of the pipeline to

which an outlet joins. Depending on the amount of flow rate purchased, the size of outlets will vary

from 50 mm for a flow rate purchase of 0.08 ML/day (equivalent to 10 ML of volume) to 300 mm

for a flow rate purchase of 2.5 ML/day (equivalent to 300 ML of volume) or greater.

The table below provides a summary of the size of property outlets that are likely to be provided as

part of the sale of water entitlements. The outlet sizes have been estimated on the basis of

hydraulic and control restraints across the outlet assembly.

The provision of additional property outlets or property outlet upgrades may be purchased if

required. The table below contains prices for the provision of additional outlets with the difference

between outlets of different sizes constituting the cost of an upgrade.


Scottsdale Irrigation Scheme: property outlet pricing and indicative sizing

Outlet

Size

Purchase

price

Purchased

volume

Purchased flow

rate

Typical max

flow*

Typical max

flow*

Typical max

flow*

(mm) ($) (ML) (ML/day) (L/sec) (ML/day) (ML/season)

50 19,500 10 – 20 0.08 – 0.17 7 0.60 70

80 20,500 25 – 40 0.21 – 0.33 16 1.38 165

100 21,700 45 – 80 0.38 – 0.67 24 2.07 250

150 26,000 85 – 180 0.71 – 1.50 52 4.49 540

200 30,000 185 ‐ 295 1.54 – 2.46 85 7.34 880

300** 60,000 300+ 2.5 200 17.5 2100

* The actual capacity of an outlet will depend upon the final scheme design, the actual range of pressures available in

the pipeline at the point at which an outlet joins and the method for connecting downstream infrastructure.

The typical maximum flows displayed in this table are based on an assumption of 50 m of head (equivalent to

490 kPa or 71 psi) being available in the pipeline at the point on the pipeline where a property outlet joins. The

capacity of each outlet will depend upon the final design, the actual pressures available in the pipeline at the

connection point and the method for connection to private infrastructure.

** Outlets greater than DN200 are customised items. Pricing for DN300 outlets as shown in the table is indicative.

Actual pricing will be confirmed on a case by case basis.

Scottsdale Irr igation Scheme Trading Zones0 7

Kilometres ´Basemap supplied by TASMAP © State of Tasmania. Base data from the LIST © State of Tasmania.

DISCLAIMER: This map is for informational purposes only. It should not be relied upon to establish with certainty the location of any of the features represented on it, either absolutely or in relation toother features.This map is not suitable for site specific decision making.

Main 1

Hurst CreekEstimated Transmission Loss 0%

Main A

Austin ALietinna 1

Jetsonville 1

Jetsonville A

Main 3

Jetsonville B

Main 4

Waterhouse 2

Lietinna 2

Jetsonville 2

Main 5

Austin 1

Waterhouse 1

Main 2

Brid RiverEstimated Transmission Loss 0%

Great Forester RiverTransmission Loss 0%

Great Forester River Transmission Loss 15%


Camden Rivulet Dam

Headquarters Road Dam

Waterhouse Pump Station

Mini-Hydro Power Station

H u r stC

r e ek

G r

e a t F o res t er R i v e r

B ri d Riv e r

ZONESThe following zon e s are Trun k Zon e s:• Austin 1 (A1)• Je tson ville 1 (J1)• Je tson ville 2 (J2)• Lie tin n a 1 (L1)• Lie tin n a 2 (L2)• Main 1 (M1)• Main 2 (M2)• Main 3 (M3) • Main 4 (M4)• Main 5 (M5)• Wate rhouse 1 (W1)• Wate rhouse 2 (W2)• Gre at Fore ste r Rive r (GR)

The following zon e s are Spur Zon e s:• Austin A (AA)• Main A (MA)• Je tson ville A (JA)• Je tson ville B (JB)• Hurst Cre e k (HR)• Brid Rive r (BR)

Proposed pump station

UTd Proposed mini-hydro power station

Proposed pipeline alignment

Proposed draft Irrigation District

DisclaimerTasm anian Irrigation doe s not guaran te e that the pipe lin e align m e n t show n in this illustration will be the actual align m e n t whe n the sche m e is constructe d.

The align m e n t pre se n te d he re is base d on the curre n t sche m e de sign , which satisfie s wate r sale s up to July 2015. The final sche m e de sign is subje ct to change and will de pe n d on the outcom e of future wate r sale s. Change s to the sche m e de sign m ay affe ct the align m e n t.

Tasm anian Irrigation is providing this inform ation to assistirrigators to conside r the opportunity of purchasing wate r e n title m e n ts. How e ve r, n e ithe r the provision of this in form ationor an y othe r inform ation provide d in re lation to the align m e n t will cre ate an y obligation on Tasm anian Irrigation. The on ly obligation which Tasm anian Irrigation will assum e is to provide wate r to the prope rty boundary.

Camden 2

Camden 1

When printed at A4Map Scale 1:200,000

Date: 11/08/2014

Map No: SIS-M1563-000Version No: 000

Map Created by: MPTasmanian Irrigation

Scottsdale Irrigation Scheme Trading Zones with Pressures

0 3



UTd

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Min. 1mMax. 15m

Min. 25mMax. 41m

Min. 44mMax. 62m

Min. 60mMax. 81m

Min. 69mMax. 93m

Min. 74mMax. 102m

Min. 71mMax. 102m

Min. 47mMax. 82m

Min. 44mMax. 82m

Min. 21mMax. 64m

Min. 18mMax. 63m

Min. 34mMax. 82m

Min. 28mMax. 47m

Min. 30mMax. 52m

Min. 20mMax. 45m

Min. 34mMax. 64m

Min. 27mMax. 60m

Min. 83mMax. 120m

Min. 3mMax. 44m

Min. 28mMax. 72m

Min. 16mMax. 35m

Min. 5mMax. 28m

Min. 54mMax. 83m

Min. 40mMax. 75m

Min. 43mMax. 85m

Min. 42mMax. 85m

Min. 41mMax. 68m

Min. 104mMax. 125m

Min. 46mMax. 70m

Min. 60mMax. 87m

Min. 61mMax. 91m

Min. 81mMax. 114m

Min. 39mMax. 58m

Min. 34mMax. 58m

Min. 51mMax. 80m

Min. 27mMax. 60m

Min. 33mMax. 70m

Min. 29mMax. 70m

Min. 76mMax. 122m

Min. 42mMax. 89m

Min. 73mMax. 105m

Min. 94mMax. 129mMin. 46m

Max. 81m

Min. 54mMax. 130m

Min. 39mMax. 84m

Main 1

Hurst CreekEstimated Transmission Loss 0%

Main A

Austin A

Lietinna 1

Jetsonville 1

Jetsonville A

Main 3

Jetsonville B

Main 4

Lietinna 2

Jetsonville 2

Main 5

Austin 1

Main 2

Brid RiverEstimated Transmission Loss 0%



Headquarters Road DamMini-Hydro Power Station

Gr e

a tFo

r est

erR i

ver

B ri d

Riv

er

Hu r s t

Cr e e k

ZONESThe follow in g zon es are Trun k Zon es:• Austin 1 (A1)• Jetson ville 1 (J1)• Jetson ville 2 (J2)• Lietin n a 1 (L1)• Lietin n a 2 (L2)• Main 1 (M1)• Main 2 (M2)• Main 3 (M3) • Main 4 (M4)• Main 5 (M5)• Great Forester River (GR)The follow in g zon es are Sp ur Zon es:• Austin A (AA)• Main A (MA)• Jetson ville A (JA)• Jetson ville B (JB)• Hurst Creek (HR)• Brid River (BR)

UTd Proposed mini-hydro power station



Pressure definitionsMax = The maximum exp ected p ressure, which w ill occur whenHeadquarters Road dam is full an d n o other irrigators are tak in gan y water (e.g. start of irrigation season ).Min = The min imum exp ected p ressure, which w ill occur whenHeadquarters Road dam is n ear emp ty an d all irrigators aretak in g their full allocation of water (e.g. late in irrigation season ).

Pressures are 'at the farm outlet' (i.e. after 10m losses haveb een in curred through the p rop erty outlet assemb ly) (un its: metresof water).Note: 1 m head = 1.42 p si

DisclaimerTasman ian Irrigation does n ot guaran tee that the p ip elin e align men t an d p ressures show n in this illustration w ill b e the actual align men t an d p ressures when the scheme is con structed.The align men t an d p ressures p resen ted here are b ased on the curren t scheme design , which satisfies water sales up toJuly 2015. The fin al scheme design is sub ject to chan ge an d w ill dep en d on the outcome of future water sales. Chan ges to the scheme design may affect the align men t an d p ressures.Though exp ected p ressures may b e higher, Tasman ianIrrigation does n ot guaran tee p ressure greater than 5 metresat the farm outlet.

Tasman ian Irrigation is p rovidin g this in formation to assistirrigators to con sider the op p ortun ity of p urchasin g water en titlemen ts. However, n either the p rovision of this in formationor an y other in formation p rovided in relation to align men t an d p ressure w ill create an y ob ligation on Tasman ian Irrigation . The on ly ob ligation which Tasman ian Irrigation w ill assume is to p rovide water to the p rop erty b oun dary.

Camden 2


Date: 13/08/2014



S c o t ts d a l e I r r ig a t i o n S c h em e Tr a d i n g Z o n e s w i t h P r e s s u r e s

0 3



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Min. 34mMax. 37m

Min. 32mMax. 37m

Min. 24mMax. 31m

Min. 20mMax. 29m

Min. 2mMax. 13m

Min. 8mMax. 21m

Min. 6mMax. 21m

Min. 11mMax. 26m

Min. 10mMax. 27m

Waterhouse 2

Waterhouse 1

Waterhouse Pump Station

Grea t F or e s t e r R i ver

ZONESThe fo llo w ing zo n es are Trun k Zo n es:

• Waterhouse 1 (W1)• Waterhouse 2 (W2)• Great Fo rester River (GR)

Proposed pump station



Pressure definitionsMax = The m axim um expected pressure, which will occur whenHeadquarters Ro ad dam is full and n o o ther irrigato rs are takingany water (e.g. start o f irrigatio n seaso n ).Min = The m inim um expected pressure, which will o ccur whenHeadquarters Ro ad dam is n ear em pty and all irrigato rs aretakin g their full allo catio n o f water (e.g. late in irrigatio n seaso n ).

Pressures are 'at the farm o utlet' (i.e. after 10m lo sses havebeen incurred thro ugh the pro perty outlet assem bly) (units: m etreso f water).No te: 1 m head = 1.42 psiDisclaimer

Tasm anian Irrigatio n does n o t guaran tee that the pipeline align m en t and pressures sho w n in this illustratio n will be the actual align m en t and pressures when the schem e is co n structed.

The align m en t and pressures presen ted here are based o n the curren t schem e design, which satisfies water sales up toJuly 2015. The final schem e design is subject to change and will depen d o n the outco m e o f future water sales. Chan ges to the schem e design m ay affect the align m en t and pressures.

Though expected pressures m ay be higher, Tasm anianIrrigatio n do es n o t guaran tee pressure greater than 5 m etresat the farm o utlet.Tasm anian Irrigatio n is pro viding this in fo rm atio n to assistirrigato rs to co n sider the oppo rtun ity o f purchasing water en titlem en ts. Ho wever, neither the pro visio n o f this in fo rm atio no r an y o ther in fo r m atio n pro vided in relatio n to align m en t and pressure will create any o bligatio n o n Tasm an ian Irrigatio n . The o n ly obligatio n which Tasm an ian Irrigatio n will assum e is to pro vide water to the pro perty boun dary.


Date: 13/08/2014




03 6398 [email protected] 2, Launceston AirportWestern Junction, TasmaniaPO Box 84Evandale TAS 7212

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