WATER MANAGEMENT AND

CHALANGES IN JŪRMALA

JŪRMALAS ŪDENS

17.03.2015

STORMWATER COLLECTION

OUTLINES

STORMWATER CATCHMENTS AND FLOWS: CATCHMENT AREA ESTIMATED – 2897 ha

CALCULATED ANNUAL FLOW – 5 500 000 m3 (4200000 in summer)

MINIMUM – 270 000 m3/month

MAXIMUM – 700 000 m3/month

OUTLETS – 24 (8 – Riga Gulf, 13 – Lielupe, 2 – Vecslocene, 1 – Veršupīte)

Total pipeline length – 50,7 km

Pumping Stations – 2 (Kauguri, Majori)

 Man-holes

GutterPipe Diameter,mm lenght,m

Total, m100 150 200 250 300 350 400 450 500 600 700 1000 1200

Kauguri 256 176 112 679 2 260 102 724 388 1 083 0 1 592 0 549 524 495 8 508Sloka 132 139 16 210 950 433 195 294 1 288 17 595 0 102 22 0 4 122Melluži 77 75 0 222 864 430 201 0 153 0 253 0 0 659 0 2 782Ķemeri 105 95 0 0 770 122 663 115 961 0 1 208 355 605 0 0 4 799Asari-Vaivari-Valteri

70 17 0 18 255 151 190 38 364 27 975 0 0 549 0 2 567

Majori 201 202 12 172 1 044 996 751 1 177 577 0 1 146 38 0 0 0 5 913Dubulti 187 115 249 108 1 264 417 1 594 0 1 275 0 1 299 0 0 0 0 6 206Buļļciems 4 2 0 0 12 0 43 0 0 0 18 0 0 0 0 73Priedaine, Bražciems

44 53 0 14 295 160 224 0 656 0 361 0 0 6 0 1 716

Dzintari 271 174 0 71 1 051 58 684 5 173 0 1 479 0 0 878 0 4 399Bulduri 346 363 0 284 3 834 619 644 0 539 0 710 0 243 95 0 6 968Pumpuri 18 6 0 0 47 20 367 0 0 0 244 0 0 0 0 678Lielupe 45 32 0 0 585 0 155 0 0 0 227 0 97 933 0 1 997

Total 1 756 1 449 389 1 77813

2313 508 6 435 2 017 7 069 44

10 107

393 1 5963 666 49550

728

STORMWATER SYSTEM DATA

ĶEMERI, SLOKA, KAUGURI, KAUGURCIEMS

VAIVARI, VALTERI, JAUNDUBULTI, DUBULTI, …

MAJORI, DZINTARI, LIELUPE, PRIEDAINE

Activity

Financing Received From Municipality

Management ExpensesAssigned Financing 2015, EURYear 2013,

EURYear 2014,

EURTotal

Year 2013, EUR

Year 2014, EUR

Total

Drainage and Storm water System Management 486 854.47 573 089.91

1 059 944.38 545 459.66 609 462.00

1 154 921.66 792 995.00

incl.              

Drainage Management389 160.09 418 490.40

807 650.49 389 170.00 418 021.00

807 191.00 466 360.00

incl.              construction works 0.00 0.00 0.00 0.00 0.00 0.00 24 000.00

Overhaul and reconstruction works 182 835.97 70 117.16

252 953.13 182 835.97 70 117.16

252 953.13 10 000.00

Storm water System Management 97 694.38 154 599.51

252 293.89 156 289.66 191 441.00

347 730.66 326 635.00

incl.              construction works 0.00 0.00 0.00 0.00 0.00 0.00 40 000.00

Overhaul and reconstruction works 3 471.82 0.00 3 471.82 3 471.82 0.00 3 471.82 159 249.00

Drainage and Stormwater System Management

Financing and Expenses 2013 - 2015

SANITARY SEWERĶemeri, Sloka, Kauguri, Kaugurciems

SANITARY SEWER Vaivari, Asari, Melluži, Jaundubulti, Valteri,

Krastciems

SANITARY SEWER Dubulti, Majori, Dzintari, Lielupe, Buļļciems,

Priedaine

SLOKA WWTP. Flows, Loads, Outlet requirements

Inlet flows are as follows:

Design year 2015 Connected population 32 440

Daily average flow 9000 m3/d

Design flow, qdim 500 m3/h

Max flow to pre-treatment 1500 m3/h

Max flow to main process 750 m3/h

Inlet loads are as follows:

SS 2320 kg/d 256 mg/l

COD 4460 kg/d 493 mg/l

BOD5 2140 kg/d 236 mg/l

Total-N 480 kg/d 53 mg/l

Total-P 80 kg/d9 mg/l

Required outlet concentrations

SS 35 mg/l COD 125 mg/l BOD5 25 mg/l Total-N 15 mg/lTotal-P 2 mg/l

WATERSUPPLY Existing, In construction

and Planned Network

Sloka, Kauguri construction works. 2013 - 2015

Construction works:

-Water Supply Network – 19 407m;

-Gravity Sewers – 16 541m;

-Rising mains – 1 256m;

-2 pumping stations

Melluži, Valteri construction works. 2014 - 2015

Construction works:

-Water Supply Network – 13,3 km;

-Gravity Sewers – 11,3 km;

-Rising mains – 3 km;

-2 pumping stations

Kaugurciems, Vaivari, Asari, Melluži construction works.

2014 - 2015Construction works:

-Water Supply Network – 24,1 km;

-Gravity Sewers – 7,7 km;

-Rising mains – 1 km;

-2 pumping stations