National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.


SACRAMENTO RIVER - SHASTA LAKE (SHDC1)
Latitude: 40.72º NLongitude: 122.42º WElevation: 1070 Feet
Location: Shasta County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Jun 07, 2025 at 7:50 AM PDT
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Flow data on this product are unregulated / full natural flow.
2025 Water Year Accumulated Volume PlotCSV Ensemble Files (Data in kcfs):  Forecast Group  |  SHDC1

SACRAMENTO - SHASTA DAM (SHDC1) 06/07/2025Median Forecast: 6740 kaf | 121% of Mean | 130% of Median

Combination chart with 61 data series.
Created: 06/07/2025 at 07:50 AM PDT
The chart has 1 X axis displaying Water Year 2025 - Day (mm/dd). Range: 2024-09-27 20:24:00 to 2025-10-05 03:36:00.
The chart has 2 Y axes displaying Water Year Volumes (1000s Ac-Ft) and Daily Observed Volumes (1000s Ac-Ft).
End of interactive chart.

Tabular Monthly Volume Accumulation (1000s of Acre-Feet)
Probability Nov 1
2024
Dec 1
2024
Jan 1
2025
Feb 1
2025
Mar 1
2025
Apr 1
2025
May 1
2025
Jun 1
2025
Jul 1
2025
Aug 1
2025
Sep 1
2025
Oct 1
2025
10% -- -- -- -- -- -- -- -- 6100 6340 6560 6770
25% -- -- -- -- -- -- -- -- 6090 6330 6540 6750
50%
(Median)
-- -- -- -- -- -- -- -- 6090 6320 6540 6740
75% -- -- -- -- -- -- -- -- 6090 6320 6540 6730
90% -- -- -- -- -- -- -- -- 6090 6320 6530 6730

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ013)
Today: Sunny. Highs 82 to 97 higher elevations and 93 to 101 lower elevations. Light winds becoming south up to 10 mph in the afternoon.

Tonight: Clear. Lows 57 to 72 higher elevations and 66 to 74 lower elevations. Light winds.

Sunday: Sunny, warmer. Highs 86 to 101 higher elevations and 97 to 105 lower elevations. Light winds.

Sunday Night: Mostly clear. Lows 59 to 74. Prevailing southwest winds up to 10 mph in the evening becoming light.

Monday: Sunny. Highs 86 to 101 higher elevations and 97 to 105 lower elevations. Light winds becoming south up to 10 mph in the afternoon.

Monday Night: Mostly clear. Lows 57 to 72.

Tuesday: Sunny. Highs 81 to 96.

Tuesday Night and Wednesday: Clear. Lows 54 to 69. Highs 81 to 96.

Wednesday Night: Mostly clear. Cooler. Lows 51 to 66.

Thursday through Friday: Clear. Highs 74 to 89. Lows 49 to 64.