Santa Clara Valley Water District

ALERT Reservoir Gage Information

These data readings are Preliminary. Most data relayed by telemetry have received little or no review. Inaccuracies in the data may be present because of instrument malfunctions and/or physical changes at the measurement site. Subsequent review may result in significant revisions to the data. GOES Satellite Transmissions (denoted by :00, :15, :30, :45 min. time values) occur every 15 minutes. Single 15 minute values transmissions may occur during storm events. **October 21, 2022 Update-Valley Water has completed converting Streamflow and Reservoir Gages from hourly to more frequent 15 min. data transmissions.**

Pacific Standard Time (Note: Gage clock may be different from current time)

Updated: 05-05-2026 13:52:52 PST

Stevens Creek Watershed
Station
Number		 Alert
ID		 Description Date & Time
(pst)		 Reservoir
Elevation
(feet)		 Spillway
Elevation
(feet)		 Reservoir
Storage
(acre-feet)		 Reservoir
Capacity
(acre-feet)		 % of
Reservoir
Capacity		 Additional
Information
4009 ... Stevens Creek Reservoir 05/05/2026 01:30:00 PM 533.15 535.0 2,779.1 2,949 94.2 Reports or Plot
Guadalupe River Watershed
Station
Number		 Alert
ID		 Description Date & Time
(pst)		 Reservoir
Elevation
(feet)		 Spillway
Elevation
(feet)		 Reservoir
Storage
(acre-feet)		 Reservoir
Capacity
(acre-feet)		 % of
Reservoir
Capacity		 Additional
Information
4001 ... Almaden Reservoir 05/05/2026 01:30:00 PM 602.0 608.6 1,205.5 1,555 77.5Reports or Plot
4003 ... Calero Reservoir 05/05/2026 01:30:00 PM 463.5 483.5 4,271.8 9,819 43.5 Reports or Plot
4006 ... Guadalupe Reservoir 05/05/2026 01:30:00 PM 586.9 617.3 1,502.0 3,320 45.2 Reports or Plot
4007 ... Lexington Reservoir 05/05/2026 01:30:00 PM 640.4 649.9 14,870.6 18,534 80.2 Reports or Plot
4011 ... Vasona Reservoir 05/05/2026 01:30:00 PM 293.9 294.8 417.1 463 90.1 Reports or Plot
Coyote Creek Watershed
Station
ID		 Alert
ID		 Description Date & Time
(pst)		 Reservoir
Elevation
(feet)		 Spillway
Elevation
(feet)		 Reservoir
Storage
(acre-feet)		 Reservoir
Capacity
(acre-feet)		 % of
Reservoir
Capacity		 Additional
Information
4005 ... Coyote Reservoir 05/05/2026 01:30:00 PM 757.2 777.2 11,492.9 22,541 51.0 Reports or Plot
4002 ... Anderson Reservoir 05/05/2026 01:30:00 PM 489.2625.0 3,486.6 89,278 3.9 Reports or Plot
Pajaro River Watershed
Station
Number		 Alert
ID		 Description Date & Time
(pst)		 Reservoir
Elevation
(feet)		 Spillway
Elevation
(feet)		 Reservoir
Storage
(acre-feet)		 Reservoir
Capacity
(acre-feet)		 % of
Reservoir
Capacity		 Additional
Information
4004 ... Chesbro Reservoir 05/05/2026 01:30:00 PM 516.0 525.0 5,727.0 7,967 71.9 Reports or Plot
4010 ... Uvas Reservoir 05/05/2026 01:30:00 PM 475.6 487.5 6,629.0 9,688 68.4 Reports or Plot
District Totals:52,381166,11431.5

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