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.


COSUMNES RIVER - MICHIGAN BAR (MHBC1)
Latitude: 38.50º NLongitude: 121.04º WElevation: 168 Feet
Location: Sacramento County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Issuance Time: Jun 21, 2025 at 12:09 PM 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  |  MHBC1

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% -- -- -- -- -- -- -- -- 319 323 327 330
25% -- -- -- -- -- -- -- -- 319 323 327 329
50%
(Median)
-- -- -- -- -- -- -- -- 319 323 327 329
75% -- -- -- -- -- -- -- -- 319 323 327 329
90% -- -- -- -- -- -- -- -- 319 323 327 329

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ017)
Tonight: Clear. Lows 52 to 60. Northwest winds 10 to 15 mph with gusts to around 30 mph.

Sunday: Sunny. Highs 81 to 87. Northwest winds 10 to 15 mph. Gusts up to 30 mph decreasing to 20 mph in the afternoon.

Sunday Night: Clear. Lows 53 to 62. West winds up to 10 mph shifting to the southwest after midnight.

Monday: Sunny, warmer. Highs 89 to 95. West winds up to 10 mph.

Monday Night: Mostly clear. Lows 54 to 63. Southwest winds up to 10 mph with gusts to around 20 mph.

Tuesday: Sunny. Highs 87 to 95.

Tuesday Night: Clear. Lows 53 to 62.

Wednesday through Saturday: Clear. Highs 90 to 100. Lows 54 to 64.