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 CaliforniaRiver Group: Russian Napa
Issuance Time: Sep 16 2019 at 7:55 AM PDTNext Issuance: Sep 17 2019 at 9:00 AM PDT
Monitor Stage: 18.0 FeetFlood Stage: 21.0 Feet
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
2018*
9,160
16.26
Apr 6, 2018
2017*
16,600
22.25
Jan 11, 2017
2016*
10,800
17.55
Jan 18, 2016
2015*
13,000
19.48
Dec 11, 2014
2014*
6,900
12.59
Mar 29, 2014
 Historical High Stage/Flow Events (Period of Record - Oct 1939 to Present)
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
Official 7 Day National Weather Service Forecast   (CAZ113)
Tonight: Partly cloudy. Areas of valley fog overnight. Lows 45 to 55. Northwest wind around 20 mph in the evening.

Tuesday: Sunny. Areas of valley fog in the morning. Highs 68 to 81.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Slight chance of rain showers in the evening, then chance of rain showers overnight. Lows 50 to 60.

Wednesday: Partly cloudy. Chance of rain showers. Highs 64 to 77.

Wednesday Night: Partly cloudy. Areas of valley fog. Lows 46 to 56. Northwest wind around 20 mph.

Thursday: Sunny. Areas of valley fog. Highs 70 to 83.

Thursday Night and Friday: Mostly clear. Lows 49 to 59. Highs 75 to 90.

Friday Night and Saturday: Clear. Lows 52 to 62. Highs 78 to 93.

Saturday Night: Mostly clear. Lows 52 to 62.

Sunday: Mostly sunny. Highs 75 to 90.

Sunday Night: Mostly clear. Lows 51 to 61.

Monday: Mostly sunny. Highs 77 to 90.
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.
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.