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



MIDDLE FORK FEATHER RIVER - PORTOLA (MFTC1)
Latitude: 39.82º NLongitude: 120.44º WElevation: 4850 Feet
Location: Plumas County in CaliforniaBulletin Group: Lower SacramentoRiver Group: Feather Yuba
Issuance Time: Dec 08, 2023 at 7:53 AM PST
Monitor Stage: 4851.0 FeetFlood Stage: 4852.5 Feet
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
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Verification / Historical Plots
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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.
Official 7 Day National Weather Service Forecast   (CAZ071)
Today: Partly cloudy in the morning then clearing. Highs 31 to 41. Light winds becoming northeast around 10 mph in the afternoon.

Tonight: Clear. Lows 12 to 22. East winds 10 to 15 mph.

Saturday: Sunny in the morning then becoming partly cloudy. Highs 36 to 46. East winds 10 to 15 mph.

Saturday Night: Mostly cloudy. Lows 17 to 27. Southeast winds around 10 mph in the evening becoming light.

Sunday: Mostly cloudy. Highs 43 to 53. Light winds becoming southwest around 10 mph in the afternoon.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 19 to 29.

Monday: Partly cloudy. Highs 46 to 51.

Monday Night through Tuesday Night: Clear. Lows 17 to 27. Highs 43 to 48.

Wednesday and Wednesday Night: Partly cloudy. Highs 38 to 48. Lows 18 to 28.

Thursday: Mostly cloudy in the morning then becoming partly cloudy. Highs 42 to 47.