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

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RUSSIAN RIVER - HOPLAND (HOPC1)
Latitude: 39.03º NLongitude: 123.13º WElevation: 498 Feet
Location: Mendocino County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Apr 13 2024 at 8:34 AM PDTNext Issuance: Apr 14 2024 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: 15.0 Feet

Please Note: Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2022*
10,200
16.65
Oct 24, 2021
2021*
948
4.36
Feb 2, 2021
2020*
2,740
8.20
Jan 16, 2020
2019*
22,200
22.95
Feb 27, 2019
2018*
9,160
16.26
Apr 6, 2018
 Historical High Stage/Flow Events (Period of Record - Oct 1939 to Present) - Ranked by Flow
1956
45,000
27.00
Dec 22, 1955
1965*
41,500
26.01
Dec 22, 1964
1974*
39,700
25.50
Jan 16, 1974
2006*
35,600
26.81
Dec 31, 2005
1986*
32,900
22.96
Feb 17, 1986
 * Discharge affected by regulation or diversion
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
15.0 FeetFlooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect minor flooding of crop land on the right bank of the river.
17.0 FeetSignificant flooding of Highway 175 at the approaches to the Russian River bridge. Minor flooding of Highway 222 near Ukiah, and in crop land along the left and right banks of the Russian River near Hopland.
18.0 FeetFlooding of Highway 222 near Ukiah. Secondary roads in low-lying areas will be flooded in the Hopland, Ukiah, and Talmage areas.
20.0 FeetFlooding of low-lying structures east of the railroad tracks near Hopland.
21.0 FeetFlooding of low-lying structures just west of the railroad tracks near Hopland.
23.0 FeetFlooding of farm land, buildings and low-lying homes in the Hopland area. Flooding will begin in the Ukiah and Talmage areas.
24.0 FeetFlooding of low-lying structures and farm land in the Hopland, Ukiah, and Talmage areas. Many secondary roads may also be flooded. Severe bank erosion is possible.
25.0 FeetSevere bank erosion is likely with widespread flooding of farm land, buildings and low-lying homes in the Hopland, Ukiah, and Talmage areas. Many secondary roads will be flooded. This level of flooding caused 6100 acres to flood in February 1940.
26.0 FeetWidespread major flooding will occur. Primary roads and some bridges will flood.
27.0 FeetWidespread major flooding. At the forecast level, over 500 homes and farm buildings were damaged on December 22,1955. 6300 acres of land were inundated by flood waters. All persons in the area are urged to move to high ground and take appropriate action to protect life and property.
28.0 FeetDisastrous flooding will occur. Many homes and businesses could be damaged. Many primary and secondary roads and some bridges could be washed out.
30.0 FeetDisastrous flooding. Many homes and businesses damaged. Numerous primary and secondary roads and some bridges could be washed out. This is equal to the highest known stage, which occurred in December 1937. 6500 acres were inundated by flood waters.
Official 7 Day National Weather Service Forecast   (CAZ113)
Tonight: Mostly cloudy. Chance of rain. Lows 35 to 45. East wind around 20 mph in the evening.

Sunday: Mostly cloudy. Chance of rain. Highs 46 to 58.

Sunday Night: Mostly cloudy. Lows 36 to 46.

Monday: Mostly sunny. Highs 58 to 70.

Monday Night: Mostly clear. Lows 39 to 49.

Tuesday: Mostly sunny. Highs 65 to 77.

Tuesday Night through Friday: Partly cloudy. Lows 45 to 55. Highs 69 to 84.

Friday Night and Saturday: Mostly clear. Lows 44 to 54. Highs 67 to 82.
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 Eureka 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.