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

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MIDDLE FORK FEATHER RIVER - PORTOLA (MFTC1)
Latitude: 39.82º NLongitude: 120.44º WElevation: 4850 Feet
Location: Plumas County in CaliforniaRiver Group: Lower Sacramento
Issuance Time: Nov 13 2019 at 1:42 PM PSTNext Issuance: Nov 14 2019 at 9:00 AM PST
Monitor Stage: 4851.0 FeetFlood Stage: 4852.5 Feet
Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View CA DWR 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*
6,110
9.76
Mar 23, 2018
2017*
12,700
12.61
Feb 10, 2017
2016* 1,649 6.23 Mar 15, 2016
2015*
622
4.56
Feb 12, 2015
2014*
394
3.97
Feb 12, 2014
 Historical High Stage/Flow Events (Period of Record - Oct 1968 to 1980 and 2007 to Present)
2017*
12,700
12.61
Feb 10, 2017
1969*
7,640
10.18**
Jan 21, 1969
1971*
6,580
9.64**
Mar 27, 1971
1980*
5,690
9.42**
Jan 14, 1980
1970* 4,970 8.81** Jan 25, 1970
2011* 4,851 9.03 Mar 17, 2011
 * Discharge affected to unknown degree by regulation or diversion
 ** Peak stage and flow courtesy of USGS.
 *** Datum changed from Local to NAVD88 on 10/01/2019. The difference is +4843.6 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ071)
Today: Partly cloudy. Highs 63 to 68. Light winds.

Tonight: Mostly cloudy. Lows 29 to 39. Light winds.

Thursday: Mostly cloudy. Highs 61 to 66. Light winds becoming southwest around 10 mph in the afternoon.

Thursday Night: Mostly cloudy. Lows 26 to 36. Southwest winds around 10 mph in the evening becoming light.

Friday: Partly cloudy. Highs 54 to 64. Light winds.

Friday Night: Clear. Lows 24 to 34.

Saturday and Saturday Night: Clear. Highs 58 to 63. Lows 24 to 34.

Sunday through Monday: Clear. Highs 62 to 67. Lows 25 to 35.

Monday Night and Tuesday: Partly cloudy. Lows 24 to 34. Highs 52 to 57.
Impacts - E19 Information
4851.0 FeetMonitor Stage. Some areas of very minor out of bank flow between Beckwourth and Clio.
4852.0 FeetLimited minor lowland flooding between Beckwourth and Clio. Potential for road impacts near Clio with large contribution from tributary creeks.
4852.5 FeetFlood stage. Minor flooding of lowlands, rural roads, agricultural areas, and some low structures between Beckwourth and Clio. In Portola, water nearing lowest lying businesses along Highway 70 on west edge of Portola. The south end of West Street in Portola floods. Portions of Highway 89 near Clio may begin to flood. Potential for greater impacts in the lower portion of the reach with large contribution from tributary creeks. Similar level to March 17, 2011.
4853.0 FeetMinor flooding of lowlands, roads, and low-lying structures between Beckwourth to Clio. In Portola the lowest lying buildings and businesses on Highway 70 may begin to experience some minor flooding. Water along West Street nearing lowest homes along river. Highway 89 near Clio likely flooded. Potential for greater impacts in the lower portion of the reach with large contribution from tributary creeks. Similar level to 3/23/2018.
4853.5 FeetFlooding of lowlands, structures, and roads from Beckwourth to Clio. Several low lying structures along river in Portola flood. Evacuation of homes on south end of West Street may be necessary. Highway 89 near Clio likely flooded. Impacts below Portola influenced by magnitude of tributary flows, especially Sulphur Creek. Similar level to 1/9/2017.
4854.0 FeetModerate flooding of lowlands, roads, homes, businesses and structures along river from Beckwourth to Clio. Lowest homes on West Street begin to flood. Impacts below Portola influenced by magnitude of tributary flows, especially Sulphur Creek. Similar level to February 22nd, 2017, and slightly exceeding flooding of 1/9/2017.
4854.5 FeetModerate flooding of businesses, homes, structures, and roads, including Highway 89 near Clio, portions of Highway 70, and low lying homes from Beckwourth to Clio. Impacts below Portola influenced by magnitude of tributary flows, especially Sulphur Creek.
4855.5 FeetMajor disruptions to transportation with significant impacts to homes and businesses between Beckworth and Clio. Approaching levels of February 9, 2017. Potential for rapid rises and major impacts from tributary streams. Impacts below Portola influenced by magnitude of tributary flows, especially Sulphur Creek. Tributary impacts may significantly proceed main-stem peak flows.
4856.5 FeetMajor to near record flooding. Major damages to transportation, homes and businesses. Similar to January 1997, and in excess of February 9, 2017. Potential for rapid rises and major impacts from tributary streams. Tributary impacts may significantly proceed main-stem peak flows.
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 Reno 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.