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

 | 

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: Jul 22 2024 at 7:22 AM PDTNext Issuance: Jul 23 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
Gage owner logo

Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
Month:  
Day:  
Year:  
Cycle:  
To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2023*
11,800
18.64
Dec 31, 2022
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
 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
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.
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.
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 areas area urged to move to high ground and take appropriate action to protect life and property.
26.0 FeetWidespread major flooding will occur. Primary roads and some bridges will flood.
25.0 FeetSevere bank erosion is likely with widespread flooding of farmland, 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.
24.0 FeetFlooding of low-lying stuctures and farmland in the Hopland, Ukiah, and Talmage ares. Many secondary roads may also be flooded. Severe bank erosion is possible.
23.0 FeetFlooding of farmland, buildings, and low-lying homes in the Hopland area. Flooding will begin in the Ukiah and Talmage areas.
21.0 FeetFlooding of low-lying structures just west of the railroad tracks near Hopland.
20.0 FeetFlooding of low-lying structures east of the railroad tracks 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.
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.
15.0 FeetFlooding of Highway 175 is expected at the approaches to the Russian River bridge. Expect flooding of cropland on the right bank of river.
Official 7 Day National Weather Service Forecast   (CAZ113)
Today: Mostly sunny. Highs 93 to 108.

Tonight: Partly cloudy. Lows 66 to 76.

Wednesday: Sunny. Highs 89 to 104.

Wednesday Night: Clear. Lows 60 to 70.

Thursday: Sunny. Highs 86 to 101.

Thursday Night and Friday: Clear. Lows 56 to 66. Highs 86 to 101.

Friday Night through Monday: Mostly clear. Lows 53 to 63. Highs 80 to 95.
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.