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| Latitude: 39.24º N | Longitude: 121.99º W | Elevation: 62 Feet | |||
| Location: Colusa County in California | Bulletin Group: Upper Sacramento | River Group: Upper Sacramento | |||
| Action/Monitor: 60.9 Feet | Minor Flood: 70.1 Feet | Moderate Flood: 72.9 Feet | Major Flood: 73.9 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the California Department of Water Resources. |
Historical Stage/Flow Data |
|||
|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
2023 |
26,500 |
66.60 |
Mar 16, 2023 |
2022 |
0**** |
-- |
-- |
2021 |
0**** |
-- |
-- |
2020 |
0**** |
-- |
-- |
2019 |
44,300 |
68.74 |
Feb 16, 2019 |
| Historical High Stage/Flow Events (Period of Record - January 1911 to Present) - Ranked by Flow | |||
1940 |
-- |
70.60* |
Mar 1, 1940 |
1958 |
83,600 |
68.80*** |
Feb 21, 1958 |
1983 |
81,500 |
68.96** |
Mar 4, 1983 |
1997 |
71,000 |
68.85 |
Jan 3, 1997 |
1965 |
77,400 |
68.50 |
Jan 7, 1965 |
1943 |
-- |
68.30 |
Jan 24, 1943 |
| * Peak prior to regulation by Shasta Dam | |||
| ** Peak after regulation by Shasta Dam | |||
| *** Peak also occurred on Feb 26th | |||
| **** No weir flow observed during the entire water year | |||
| ***** Datum changed from USED to NAVD88 on 10/01/2019. The difference is -0.9 ft and must be applied to all data before date to convert to NAVD88 | |||
| Location Photographs | ||
| ESRI™ Locator Map |
| Flood Impacts | |
| 73.9 Feet | Stages above 73.9 feet result in major flooding. Top of levee. |
| 60.9 Feet | Colusa Weir crest elevation. Overflow begins into the Sutter Bypass. |
| Official 7 Day National Weather Service Forecast (CAZ016) |
| Tonight: Mostly clear. Lows around 56. Light winds. Wednesday: Mostly sunny. Highs 69 to 75. Southeast winds up to 10 mph with gusts to around 20 mph increasing to south 15 to 20 mph with gusts to around 35 mph in the afternoon. Wednesday Night: Mostly cloudy with a chance of rain showers. Lows 51 to 57. South winds 10 to 20 mph with gusts to around 35 mph. Thursday: Mostly cloudy. A chance of rain showers in the morning, then rain showers likely in the afternoon. Breezy. Highs 60 to 66. South winds 10 to 15 mph increasing to 10 to 25 mph in the afternoon. Gusts up to 35 mph. Thursday Night: Mostly cloudy with a chance of rain showers. Lows around 50. South winds 10 to 15 mph with gusts to around 30 mph. Friday: Mostly cloudy with a chance of rain showers. Highs 59 to 66. Friday Night: Partly cloudy with a chance of rain showers. Colder. Lows 39 to 45. Saturday: Mostly sunny. Highs 60 to 66. Saturday Night: Mostly cloudy with a slight chance of rain showers. Lows around 46. Sunday through Monday: Mostly cloudy with a chance of rain showers. Highs 56 to 66. Lows 44 to 50. Monday Night: Mostly cloudy with a slight chance of rain showers. Lows around 46. Tuesday: Mostly cloudy with a chance of rain showers. Highs 58 to 64. |
| Product Disclaimer |
This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only. |
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