Water Supply UpdateWater Supply Update
Board of Directors Meeting
February 25, 2020
Water Supply Briefing
• Current Water Supply
• California Water Supply
• Water Supply Projections
2
Current Water SupplyGross Water Production
3
0.04 0.03
0.950.30
2.85
11.30
2.70
0.190
2
4
6
8
10
12
JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN
AverageRainfall Year 2020
Current Water SupplyMokelumne Precipitation
4
Through Feb 23: 18.36” (57% of average)
0.00 0.000.25
0.00
1.25
4.66
1.94
0.000
1
2
3
4
5
6
JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN
AverageRainfall Year 2020
Current Water SupplyEast Bay Precipitation
5
Through Feb 23: 8.10” (43% of average)
6
Current Water SupplyCaples Lake Snow Depth
0
20
40
60
80
100
120
140
160
Oct Nov Dec Jan Feb Mar Apr May Jun
Snow
Dep
th (i
n)
Historical AverageWY2015WY2019WY2020
Current Water SupplySnow
7
Current Water SupplySnow
8
As of Feb. 23, 2020 Cumulative Precipitation
% ofAverage
Caples Lake Snow Depth 44” 60%Caples Lake Snow Water Content 17.20” 67%
Current Water SupplyReservoir Storage
As of 2/23/2020
Current Storage
Percent of Average
Percent of Capacity
Pardee 182,000 AF 100% 89%Camanche 289,440 AF 107% 69%East Bay 129,850 AF 98% 86%Total System 601,290 AF 103% 78%
9
California Water SupplyAutomated Sensor Snow Water Equivalents
10
Caples Lake Snow Water Content54%
48%
44%
Data for: 23-Feb-2020
% Normal for this Date
Statewide Average: 49%
Year% of Normal
on February 23
2018 19%
2019 178%
2020 67%
Water Supply ProjectionsMokelumne Precipitation Rainfall Year 2020
11
10% Exceedance (Wet)
90% Exceedance (Dry)
50% Exceedance (Median)
RY2020 to-date:18.36”
Wettest of Record, 87.1” (RY83)
Average, 48.3”
Driest of Record, 23.0” (RY77)
630 TAF
570 TAF
500 TAF
300
350
400
450
500
550
600
650
700
750
800
Jul-19 Aug-19 Sep-19 Oct-19 Nov-19 Dec-19 Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20
Tota
l Sys
tem
Sto
rage
(TA
F)
Total System Storage WY2020
Water Supply ProjectionsProjected 2020 EBMUD Total System Storage
12
10% and 50% Exceedance
90% Exceedance
13
Questions ?
Elevation +Gain +Gain Elevation Storage Release SpillMOKELUMNE Feet -Loss Ac-Ft -Loss Feet Ac-Ft Cfs Cfs Pardee 557.51 -0.01 181980 -20 567.65 203795 14 0 Camanche 216.87 -0.11 288740 -700 235.5 417120 330 0EAST BAY Briones 570.83 -0.05 55290 -30 576.14 58960 0 0 Chabot 223.65 -0.01 9160 0 227.25 10350 0 0 Lafayette 437.82 0 2920 0 449.16 4250 0 0 San Pablo 303.7 0.02 30070 20 313.68 37915 0 0 Upper San Leandro 451.02 0 32400 0 459.98 38905 0 0
129840 -10 150380
600560 -730 771295
Storage Operating MGMG Capacity Line 1 27.7
331 720 Line 2 35.8321 Line 3 85.9
10 TOTAL 149.4FSCC to MOK AQUEDUCTS (Measured at Brandt), MG
Million Capacity Mok 1 0Gallons MGD Mok 2 0
0 25 0 MG120 190 Cfs
0 30 3470 50 2410 45 14
40.7 90 0330
160.7 4300.4
161.1 Maximum10 Storage Change Capacity
0.9 4637 -30 26560
150.2 16198 81 14185739.4 9668 160 52025
110.8 30503 211 220442
INPUTBriones Res. 0 34San Pablo Res. 0 0 This Season Season SeasonU. San Leandro Res. 0 0 Today Month to-Date to-Date Total
0 0 8.42 18.04 25.33TOTAL 0 34 0 0 11 22.65 32.06REMARKS 0 0 7.77 20.2 28.18
0 0 9.11 16.69 23.020 0 9.28 14.36 21.560 0.14 18.09 30.42 45.51
Today44 Inches
17.1 Inches
PRECIPITATION (Inches)
Total
Lafayette WTP
THROTTLE
Total Change
Walnut Creek WTP
Mokelumne River Natural FlowPardee Reservoir Inflow
RIVER FLOWS AND RELEASES
WATER PRODUCTION
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
Total Previous Day THROTTLE
MOKELUMNE SYSTEM
Today
Total East Bay Res.
AND DEMAND
THROTTLE
231 Cfs
DISTRIBUTION RESERVOIRS AQUEDUCT DELIVERIES
Flow Conditions
TOTAL SYSTEM STORAGE
DISTRIBUTION SYSTEM
WATER SUPPLY ENGINEERING DAILY REPORTMonday, February 24, 2020
RESERVOIR STORAGE AND ELEVATION
STORAGE MAXIMUM CAPACITYWATER SURFACE
East-of-Hills Demand
TOTAL WATER PRODUCTION
Old Reservoirs Change in Distribution System
Lower Bear Res. Salt Springs Res.
Wash Water from Distribution Sys.
RAW WATER TRANSMISSION Ac-ft
PG&E CO. STORAGE (Acre-feet)TOTAL SURFACE PRODUCTION Miscellaneous(Estimated)
West-of-Hills Demand
SYSTEM DEMAND
25.9 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 = 292 cfs
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
74 Inches
STATION
Orinda WTP USL WTP
Lafayette Reservoir