water supply board briefingupper san leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065...

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Water Supply Board Briefing Water Operations Department January 23, 2018

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Page 1: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Water Supply Board Briefing

Water Operations Department

January 23, 2018

Page 2: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Water Supply Briefing

• Current Water Supply

• California Water Supply

•Water Supply Projections

2

Page 3: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

WATER YEAR 2018

CURRENT STATUS & PROJECTIONS

Page 4: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Current Water Supply Gross Water Production

4

Page 5: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Current Water Supply Mokelumne Precipitation

5

0” 0.17”

1.68”

0.57”

9.68”

0.74”

Rainfall Year 2018 Average

5.28”

Page 6: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Current Water Supply East Bay Precipitation

6

0.26”

Rainfall Year 2018 Average

0.06”

3.68”

0” 0” 0.04”

3.83”

Page 7: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

7

Current Water Supply Caples Lake Snow Depth

Page 8: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Current Water Supply Precipitation & Snow

8

Add current photos

As of 1/21/2018 Cumulative Precipitation

% of Average

East Bay East Bay Watershed 7.86” 58% Mokelumne Basin 4-Station Average 18.12” 78% Caples Lake Snow Depth 10.00” 18% Caples Lake Snow Water Content 4.44” 26%

Page 9: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Current Water Supply Reservoir Storage

As of 1/21/2018

Current Storage

Percent of Average

Percent of Capacity

Pardee 181,250 AF 101% 89%

Camanche 316,840 AF 122% 76%

East Bay 128,730 AF 103% 85%

Total System 626,820 AF 111% 81% 9

Page 10: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

California Water Supply Automated Sensor Snow Water Equivalents

10

16% / 26% Caples Lake Snow Water Content

Page 11: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Water Supply Projections Mokelumne Precipitation Rainfall Year 2018

Wettest of Record 87.3” (RY83)

Driest of Record 23.0” (RY77)

RY 2018 To-Date 18.12”

Average 48.3”

10% Exceedence

90% Exceedence

Median

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Page 12: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1
Page 13: Water Supply Board BriefingUpper San Leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065 626780 -40 771980 Storage Operating MG MG Capacity Line 1 37.3 310 720 Line 2 29.1

Elevation +Gain +Gain Elevation Storage Release SpillMOKELUMNE Feet -Loss Ac-Ft -Loss Feet Ac-Ft Cfs Cfs Pardee 556.96 -0.2 180840 -410 567.65 203795 478 0 Camanche 221.25 0.01 316910 70 235.5 417120 401 0EAST BAY Briones 569.27 0.1 54230 70 576.14 58960 0 0 Chabot 224.45 0.05 9420 20 227.25 10350 0 0 Lafayette 439.94 -0.01 3150 0 449.16 4250 3 0 San Pablo 309.02 0.15 34820 120 313.68 38600 0 0 Upper San Leandro 443.07 0.17 27410 90 459.98 38905 0 0

129030 300 151065

626780 -40 771980

Storage Operating MGMG Capacity Line 1 37.3

310 720 Line 2 29.1306 Line 3 95.9

4 TOTAL 162.3FSCC to MOK AQUEDUCTS (Measured at Brandt), MG

Million Capacity Mok 1 0Gallons MGD Mok 2 0

0 25 0 MG69 190 Cfs0 30 503

18.8 50 5160 45 478

37.1 90 0401

124.9 4300.4

125.3 Maximum4 Storage Change Capacity

1.1 9595 -144 26560

120.1 32857 248 14185724 16151 -129 52025

96.1 58603 -25 220442

INPUTBriones Res. 51 0San Pablo Res. 122 61 This Season Season SeasonU. San Leandro Res. 0 0 Today Month to-Date to-Date Total

0.58 4.93 9.3 13.09 25.33TOTAL 173 61 0.45 4.69 10.74 16.05 32.06REMARKS 0.15 3.45 7.15 14.29 28.18

0.2 4.12 8.84 11.72 23.020.12 3.33 8.55 10.27 21.560.11 4.74 16.43 22.1 45.51

Today12 Inches

4.3 Inches

STATION

Orinda WTP USL WTP

Lafayette Reservoir

WTP capacities are sustainable rates.

Walnut Creek WTP

EAST BAY MUNICIPAL UTILITY DISTRICT

All other data as of midnight. Snow Depth Water Content

CAPLES LAKE (7,830 FT) DATA

56 Inches17.6 Inches

DRAFT

Average

Camp Pardee Salt Springs P.H.

PG&E data as of 4:00 pm previous date.

WID Canal Diversion = 0 cfsMokelumne River below WID = 372 cfs

RAW WATER TRANSMISSION Ac-ft

PG&E CO. STORAGE (Acre-feet)TOTAL SURFACE PRODUCTION Miscellaneous(Estimated)

West-of-Hills Demand

SYSTEM DEMAND East-of-Hills Demand

TOTAL WATER PRODUCTION

Old Reservoirs Change in Distribution System

Lower Bear Res. Salt Springs Res.

Wash Water from Distribution Sys.

WATER SUPPLY ENGINEERING DAILY REPORTMonday, January 22, 2018

RESERVOIR STORAGE AND ELEVATION

STORAGE MAXIMUM CAPACITYWATER SURFACE

Total East Bay Res.

AND DEMAND

THROTTLE

251 Cfs

DISTRIBUTION RESERVOIRS AQUEDUCT DELIVERIES

Flow Conditions

TOTAL SYSTEM STORAGE

DISTRIBUTION SYSTEM

Total Previous Day GRAVITY

MOKELUMNE SYSTEM

Today

AVERAGE YEARTHIS YEAR

Orinda WTPSan Pablo WTP

Pardee Release to Camanche Res.Sobrante WTP

Pardee Release to JVIDUpper San Leandro WTP

Camanche Release to Mokel. River

Lafayette WTP

GRAVITY

Total Change

Walnut Creek WTP

Mokelumne River Natural FlowPardee Reservoir Inflow

RIVER FLOWS AND RELEASES

WATER PRODUCTION

PRECIPITATION (Inches)

Total