City of KelownaStatus of Central Okanagan Watersheds Workshop

January 27th, 2006

Watershed Management toOptimize Water Quality

Black Mountain Irrigation District

Presentation Outline

BMID Water Supply System

Mission Creek Watershed (Quantity)

Mission Creek Watershed(Quality w.r.t. drinking water)

Present Management of Watershed

Future Management of Watershed

History of BMID Incorporated November 15th, 1920

Amalgamation of Black Mountain Water Co., Rutland Estatesand Central Okanagan Land and Orchard Co.

Flumes and furrow irrigation for first half of 1900’s, Feed fromupper Belgo Creek

Mission Creek intake, flume and tunnel developed in late 1940’s

Pressurized in 1970’s ARDA Program

Scotty Creek Improvement District was amalgamated into BMIDin 1980

WTP constructed in 1998

BMID Today

Water Service to 21,000 people

7,400 Domestic Connections4,800 Single Family Residential Connections860 Irrigation Connections

4,120 acres of Irrigation (Grade A)1,160 acres of Irrigation (Grade C not-in-use)1,690 acres of Dry land (Grade D)

Very good raw water quality,Additional Treatment required during spring freshet and earlysummer

Improvement District, Full Cost Pricing

Regional Water Supply for KJWC Utilities

3 Primary Supply Sources

Watershed Supply 57%Okanagan Lake Supply 29%Groundwater Supply 14%

Watersheds recharge lake and aquifersand are the most sensitive to drought

DistrictDistrict WatershedWatershed

BMIDDistrictBoundary

Mission CreekWatershed aboveBMID Intake

Belgo Reservoir 1974 (6,785 ML) Graystoke Reservoir-1972 (5,103 ML)

Fishhawk Reservoir1974 - ( 2,107 ML)

Loch Long ( 740 ML)

James Lake ( 1,378 ML)

Available Source Water

0

100000

200000

300000

400000

500000

600000

1976

1 97 7

1 97 8

1979

198 0

1 98 1

1 98 2

1 983

1 98 4

1985

198 6

1 98 7

1 98 8

1 989

1 99 0

199 1

199 2

1 99 3

1 99 4

1 995

1 996

199 7

1 99 8

1 99 9

2 00 0

2 001

2002

2 00 3

2 00 4

Total Water Demand

Domestic

Irrigation

Available Source Water

Available Source Water (2)

Expon. (Total Water Demand)

Watershed Reliability

% of BMID BMID GEID SEKID Total all

Drought Frequency Annual Mission Ck Scotty Ck Mill Creek Hydraulic Ck Watershed

Average (ML) (ML) (ML) (ML) Source (ML)

1: 10 wet year 1.44 256,529 7,252 14,846 30,532 309,159

Average year 1.00 178,145 5,036 10,310 21,203 214,694

1:10 year drought 0.59 105,106 2,971 6,083 12,510 126,669

1:25 year drought 0.49 87,291 2,468 5,052 10,389 105,200

1:50 year drought 0.43 76,602 2,165 4,433 9,117 92,318

1:100 year drought 0.38 67,695 1,914 3,918 8,057 81,584

1:200 year drought 0.34 60,569 1,712 3,505 7,209 72,996

Catchment Area (km2) 537 36 73.5 130.5 777

Source: KJWC 2005 Strategic PlanSource: KJWC 2005 Strategic Plan

Existing Water Supply

Annual average usage 13,400 ML/year

90% from Mission Creek,10% from Scotty Creek and Wells

Max. Day usage 151 ML/day (30,000 USgpm)42,000,000 US gallons / day

Recent Water Demand Trends

0

2000

4000

6000

8000

10000

12000

14000

16000

180001

976

197

71

978

197

91

980

198

11

982

198

31

984

198

51

986

198

71

988

198

91

990

199

11

992

199

31

994

199

51

996

199

71

998

199

92

000

200

12

002

200

32

004

Total Water DemandDomesticIrrigationExpon. (Total Water Demand)

Growth in BMID Water Demand ( 0.60% in 28 years )

BMID Water Quality Objectives

Meet 4-3-2-1-0 IHA Requirements

Meet Provincial Regulations at all times

Meet GCDWQ at all times

Safe for Public at all times, i.e. no water qualityadvisories or boil water advisories or boil water orders

Cost effective

Work to reducing turbidity to less than 0.30 NTU

Total Organic Carbon Removal

0

2

4

6

8

10

12

4/5/

2004

4/12

/200

4

4/19

/200

4

4/26

/200

4

5/3/

2004

5/10

/200

4

5/17

/200

4

5/24

/200

4

5/31

/200

4

6/7/

2004

6/14

/200

4

6/21

/200

4

6/28

/200

4

7/5/

2004

7/12

/200

4

TO

Cin

mg

/L

Raw Water Treated Water

Turbidity Removal

0

10

20

30

40

50

60

4/10/2

004

4/17/2

004

4/24/2

004

5/1/2

004

5 /8/20

04

5/15/2

004

5/22/2

004

5/29/2

004

6/5/2

004

6/12/2

004

6/19/2

004

6/26/2

004

7/3/2

004

7 /10/2

004

Turb

idity

inN

TU

Mission Creek NTU Treated NTU

True Colour Removal

0

10

20

30

40

50

60

70

4/5/

2004

4/12

/200

4

4/19

/200

4

4/2 6/

2004

5 /3/2

004

5/10

/200

4

5/17

/200

4

5/24

/200

4

5/3 1/

2004

6/7/

2004

6 /14/

200 4

6/21

/200

4

6/28

/200

4

7/5/2 00

4

7/1 2/

2 004

Tru

eC

olo

ur

TC

U

Mission Creek Treated Water

Particle Counts in Other B.C. Water Supplies

21

28

32

42

51

137

257

294

785

1032

1205

1283

1439

1545

1565

2166

2422

2537

6061

6494

8272

9342

16056

21823

0 5000 10000 15000 20000 25000

NAYA (bottled water), Spring water, Filtered

Genelle Improvement District

Canadian Springs (bottled water), RO

Penticton, Okanagan Lake, Clarification/Filtration

SEKID, Well water, RO at private residence

BMID, Mission Creek, RO under sink unit

Distilled Water (store purchase)

Holland Creek, Ladysmith, BC, Unfiltered

Holland Lake, Ladysmith, BC, Unfiltered

Peachland, Peachland Creek, Unfiltered

BMID, Mission Creek, Clarification

Kelowna, Okanagan Lake, tapwater, Unfiltered

Holland Creek, Ladysmith, BC, Unfiltered

Cranbrook, Phillips Reservoir, tap water, Unfiltered

Kelowna, Okanagan Lake, tap water, Unfiltered

SEKID, well water, Unfiltered

Vernon, Kalamalka Lake, Unfiltered

Holland Lake, Ladysmith, BC, Unfiltered

Kamloops, South Thompson River, tap water, Unfiltered

Summerland, Trout Creek, tap water, unfiltered

Westbank Irrigation District, Powers Creek, unfiltered

Mission Creek, raw water prior to settling or treatment

Dave's Creek,small creek feeding into Mission Creek

Mission Creek in full freshet flow, raw water, 81 NTU

Particulate Matter Count

Mission Creek WatershedMission Creek Watershed2005 Chemical Parameters2005 Chemical Parameters

Sample ID: Little Trapper James James Belgo Belgo Graystoke Graystoke Fishhawk Fishhawk Loch Long Crescent St.Margaret

Parameter

Sampling Depth m depth Surface 6.5m Surface 6.8m Surface 12m Surface 4.8 m Surface 1m Surface Surface

Reservoir Elevation feet 4465 4479 4485 4232 4255 5870 5910 5900 5920 6090 6100 6550

pH pH units 9.0 6.7 7.4 6.3 6.9 6.0 6.1 6.1 6.1 6.6 6.4 7.4

Alkalinity (total) mg/L as CaCO3 33 34 36 20 18 5 6 5 6 9 5 20

Calcium (total) mg/L 14.3 14.7 14.3 5.88 4.97 1.56 1.69 1.61 1.63 2.66

Colour (true) colour units 52 43 38 130 66 24 17 36 31 22 15 < 5.0

Conductivity umhos/cm 95 102 102 62 54 30 30 36 41 30

Hardness mg/L as CaCO3 39 42 41 23 20 5 6 6 6 9

Iron (total) mg/L 0.11 0.38 0.08 2.76 0.35 0.08 0.04 0.40 0.21 0.06

Magnesium (total) mg/L 1.32 1.28 1.30 1.92 1.91 0.29 0.31 0.38 0.36 0.57

Manganese (total) mg/L <0.01 0.19 <0.01 0.47 0.03 0.01 0.01 0.06 0.01 0.01

Nitrate & Nitrite mg/L as N 0.010 0.020 <0.005 0.010 0.010 0.010 0.005 <0.005 0.010 0.005

Potassium (total) mg/L 0.37 0.45 0.42 0.92 0.56 0.09 0.13 0.17 0.15 0.12

Sodium (total) mg/L 1.71 1.74 1.84 3.45 2.06 0.58 0.66 0.74 0.71 0.81

Sulphate mg/L 5.0 4.8 5.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0

Total Dissolved Solids mg/L 75 85 81 62 60 29 17 21 30 15

Turbidity NTU 0.90 1.5 0.85 8.5 1.2 0.70 0.55 2.0 0.90 0.60 1.02 0.35

Ortho Phosphate mg/L as P <0.005 0.13 <0.005 0.042 <0.005 0.005 0.014 <0.005 0.029 <0.005

Dissolved Phosphorus mg/L as P 0.015 0.15 0.013 0.083 0.01 0.005 0.015 0.005 0.038 0.008

Total Phosphorus mg/L as P 0.018 0.19 0.020 0.11 0.03 0.015 0.025 0.033 0.045 0.009

Total Organic Carbon mg/L 14.4 15.2 15.5 21.9 16.2 6.7 5.7 9.0 7.3 6.0 7.8 2.0

UV Transmissivity @254u %/cm 45 44 47 20 34 75 77 61 65 75

Ammonia mg/L as N <0.01 <0.01 <0.01 0.06 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Total Kjeldahl Nitrogen mg/L as N 0.26 0.24 0.24 0.44 0.30 0.20 0.26 0.46 0.36 0.24

Total Coliform MPN/100mL 3.6 9.1 3.6 no sample 3.6

Fecal Coliform MPN/100mL <3 <3 <3 no sample <3

THMs ug/L 150 66

Watershed Reservoir Quality

volume UVT

Graystoke Reservoir 5,103 ML 77

Hilda Creek Diversion ~ 1,500 ML ~75

Loch Long (MoE) 740 ML 75

Fishhawk Lake 2,107 ML 67

James Lake 740 ML 47

Belgo Reservoir 6,785 ML 20

Mission Creek –Biological ParametersID No. Site/Parameter Total Coliform Fecal E-coli

1 Mission @ Hwy 33 u/s of Belgo 1400 21 18

2 Joe Rich @ Mission 2000 39 38

3 Joe Rich @ Hwy 33 590 8 8

4 Belgo Creek u/s Mission, Hwy 33 800 5 4

5 Mission u/s of Pearson 1300 3 3

6 Pearson Creek @ Mission Creek 430 3 3

Recent BMID WQ Projects

Baffles installed at WTP 2001

Process optimization at WTP 2000-2005

SCM (Streaming Current Monitor) installed andoperational at WTP in 2005

Pilot Tested and implemented Pre-oxidation ofwater prior to Coagulation at WTP

BMID Future ProjectsBMID Future Projects

Proposed WQ Improvements

Remote monitoring and releases at Upper Reservoirs

On-line Joule Micro WQ monitoring device

Black Mountain Reservoir and UV Treatment

Releases of Lower Level Water

WTP Winterization

Additional Storage in Upper Watershed(Crescent Lake)

Filtration for Winter Flows

SummarySummary Source Protection is critical. Watersheds provide largest source of

water, groundwater recharge and recharge of Okanagan Lake.

Highest quality source water is located in the Upper Watershed. Thiswater requires less treatment.

Implement improved technology for releases to Mission Creek

Largest most significant project is Black Mountain Reservoir which willallow best quality water to be stored locally

Improved safety through UV Disinfection at Black Mountain Reservoirsite

Improved WQ monitoring devices to be brought on-line

Questions …

More information on the District isavailable at our website at:www.bmid.ca/

Contact: Administrator Bob HraskoPhone 765-5169