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



KLAMATH RIVER - KLAMATH (KLMC1)
Latitude: 41.51º NLongitude: 123.98º WElevation: 6 Feet
Location: Del Norte County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Jul 01, 2025 at 8:01 AM PDT
Action/Monitor: 30.0 FeetMinor Flood: 38.0 FeetModerate Flood: 42.0 FeetMajor Flood: 46.0 Feet
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  KLMC1

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Flood Impacts
66.0 FeetExtensive and severe flooding can be expected from above Klamath Glen to the Pacific Ocean including the towns of Klamath and Klamath Glen and US Highway 101. The forecast level is over the top of the levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground.
65.5 FeetExtensive and severe flooding can be expected from above Klamath Glen to the Pacific Ocean including the towns of Klamath and Klamath Glen and US Highway 101. The forecast level is at the top of the levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground. High tides and strong, onshore winds amplify effects.
65.0 FeetSevere flooding is expected in the delta area, particularly US Highway 101 in the vicinity of Requa Road, the access road to Klamath Glen, and secondary roads. The forecast level is within 0.5 feet of top of levee. Any persons living or working in areas protected by the levee should take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
64.0 FeetSevere flooding is the delta area is likely, particularly US Highway 101 in the vicinity of Requa Road, the access road to Klamath Glen, and secondary roads. The forecast level is within 1.5 feet of the top of the levee. Any persons living or working in areas protected by the levee should be prepared to take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
63.0 FeetSevere flooding of the delta area below the levee. Most roads will be flooded and impassable, including US Highway 101 and numerous secondary roads. The forecast level is within 2.5 feet of the top of the levee protecting Klamath Glen. Any persons living or working in areas protected by the levee should be prepared to take appropriate action and move to higher ground. High tides and strong onshore winds will amplify flooding effects.
49.0 FeetExtensive flooding along the river from Blue Creek downstream to the Pacific Ocean. Most roads in the area, including US Highway 101, Requa Rd, and the access road to Klamath Glen are likely to be flooded and impassable.
46.0 FeetNumerous road closures are expected including US Highway 101 and secondary roads in the area. Significant flooding of many homes and businesses will occur. Loss of power is likely due to innundation of the transfer station.
42.0 FeetFlooding of Highway 101 near Requa Rd, the access road to Klamath Glen, and adjacent low lying secondary roads near the delta is likely. Flooding will be amplified if coincident with high tides and strong onshore winds.
40.0 FeetFlooding may occur on the access road to Klamath Glen and adjacent low lying secondary roads near the delta. Flooding will be amplified if coincident with high tides and strong, onshore winds.
38.0 FeetFlooding of lowest lying areas is likely.
34.0 FeetFlooding of lowest lying areas may occur.
Official 7 Day National Weather Service Forecast   (CAZ101)
Tonight: Mostly cloudy. Patchy dense fog. Lows 48 to 58. West wind 10 to 20 mph.

Wednesday: Partly cloudy in the morning then clearing. Patchy dense fog in the morning. Highs 66 to 81. Northwest wind 10 to 20 mph.

Wednesday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog overnight. Lows 47 to 57. Northwest wind 10 to 20 mph.

Thursday: Mostly cloudy. Highs 61 to 72. Northwest wind around 15 mph.

Thursday Night and Independence Day: Mostly cloudy. Patchy fog. Lows 45 to 55. Highs 59 to 72. Northwest wind 5 to 15 mph.

Friday Night through Tuesday: Partly cloudy. Lows 45 to 55. Highs 65 to 80.