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| MIDDLE FORK FEATHER RIVER - PORTOLA (MFTC1) | ||||||||||||||||||
| Latitude: 39.82º N | Longitude: 120.44º W | Elevation: 4850 Feet | ||||||||||||||||
| Location: Plumas County in CA | ||||||||||||||||||
| River Group: Lower Sacramento | ||||||||||||||||||
| Issuance Time: | Jan 04 2026 at 8:01 AM PST |
| Action/ Monitor: 4851.0 Ft | Minor Flood: 4852.5 Ft | Moderate Flood: 4853.5 Ft | Major Flood: 4855.5 Ft |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. |
| Short-Range Peak Exceedance Plot Product Info. | CSV Ensemble Files (Data in kcfs): Forecast Group | MFTC1 | ||||||||||||||||||||||||||||||||||||
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| Location Photographs | ||
| ESRI™ Locator Map |
| Flood Impacts | |
| 4,856.5 Feet | Major 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. |
| 4,855.5 Feet | Major Flood Stage. Major 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. |
| 4,854.5 Feet | Moderate 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. |
| 4,854.0 Feet | Moderate 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 January 9, 2017. |
| 4,853.5 Feet | Moderate Flood Stage. Flooding 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. |
| 4,853.0 Feet | Minor 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. |
| 4,852.5 Feet | Flood 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. |
| 4,852.0 Feet | Limited minor lowland flooding between Beckwourth and Clio. Potential for road impacts near Clio with large contribution from tributary creeks. |
| 4,851.0 Feet | Monitor Stage. Some areas of very minor out of bank flow between Beckwourth and Clio. |
| Official 7 Day National Weather Service Forecast (CAZ071) |
| Tonight: Mostly cloudy. Chance of snow and rain. Snow level 5000 feet lowering to the valley floor. Snow accumulation up to 3 inches. Lows 23 to 33. Southwest winds 10 to 15 mph. Monday: Chance of snow in the morning, then snow and rain likely in the afternoon. Snow level rising to 5000 feet. Snow accumulation of 1 to 4 inches. Highs 36 to 46. South winds 10 to 15 mph. Monday Night: Mostly cloudy. Chance of snow and rain. Snow level 5000 feet. Snow accumulation up to 2 inches. Lows 22 to 32. Light winds. Tuesday: Mostly cloudy. Chance of rain and snow. Snow level rising to 5000 feet. Highs 37 to 47. Light winds becoming southwest around 10 mph in the afternoon. Tuesday Night: Cloudy with a chance of snow and rain. Snow level 5000 to 5500 feet. Lows 25 to 35. Southwest winds 10 to 15 mph. Wednesday: Mostly cloudy with a chance of snow and rain. Highs 36 to 46. Wednesday Night: Mostly cloudy with a chance of snow and rain in the evening, then partly cloudy with a slight chance of snow after midnight. Lows 17 to 27. Thursday: Partly cloudy with a slight chance of snow. Highs 34 to 44. Thursday Night and Friday: Partly cloudy. Lows 14 to 24. Highs 40 to 45. Friday Night through Sunday: Clear. Lows 16 to 26. Highs 41 to 51. |
| Flood Impacts | |
| 4,856.5 Feet | Major 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. |
| 4,855.5 Feet | Major Flood Stage. Major 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. |
| 4,854.5 Feet | Moderate 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. |
| 4,854.0 Feet | Moderate 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 January 9, 2017. |
| 4,853.5 Feet | Moderate Flood Stage. Flooding 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. |
| 4,853.0 Feet | Minor 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. |
| 4,852.5 Feet | Flood 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. |
| 4,852.0 Feet | Limited minor lowland flooding between Beckwourth and Clio. Potential for road impacts near Clio with large contribution from tributary creeks. |
| 4,851.0 Feet | Monitor Stage. Some areas of very minor out of bank flow between Beckwourth and Clio. |
