water supply board briefingupper san leandro 443.07 0.17 27410 90 459.98 38905 00 129030 300 151065...
TRANSCRIPT
Water Supply Board Briefing
Water Operations Department
January 23, 2018
Water Supply Briefing
• Current Water Supply
• California Water Supply
•Water Supply Projections
2
WATER YEAR 2018
CURRENT STATUS & PROJECTIONS
Current Water Supply Gross Water Production
4
Current Water Supply Mokelumne Precipitation
5
0” 0.17”
1.68”
0.57”
9.68”
0.74”
Rainfall Year 2018 Average
5.28”
Current Water Supply East Bay Precipitation
6
0.26”
Rainfall Year 2018 Average
0.06”
3.68”
0” 0” 0.04”
3.83”
7
Current Water Supply Caples Lake Snow Depth
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%
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
California Water Supply Automated Sensor Snow Water Equivalents
10
16% / 26% Caples Lake Snow Water Content
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
11
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