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KLAMATH RIVER - KLAMATH (KLMC1)

Latitude: 41.51º N	Longitude: 123.98º W	Elevation: 6 Feet
Location: Del Norte County in California		Bulletin Group: North Coast		River Group: Klamath

Issuance Time:

Jun 22, 2025 at 8:53 AM PDT

Action/Monitor: 30.0 Feet

Minor Flood: 38.0 Feet

Moderate Flood: 42.0 Feet

Major 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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		Official Forecast (Deterministic)

		Prob. of Threshold Exceedance
		Model Traces

What information is considered in this forecast?

Verification / Historical Plots
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Flood Impacts
66.0 Feet	Extensive 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 Feet	Extensive 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 Feet	Severe 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 Feet	Severe 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 Feet	Severe 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 Feet	Extensive 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 Feet	Numerous 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 Feet	Flooding 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 Feet	Flooding 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 Feet	Flooding of lowest lying areas is likely.
34.0 Feet	Flooding of lowest lying areas may occur.

Official 7 Day National Weather Service Forecast (CAZ101)

Today: Partly cloudy until early afternoon then becoming mostly cloudy. Highs 61 to 76. Northwest wind around 10 mph.

Tonight: Mostly cloudy. Patchy fog. Lows 45 to 55. West wind around 5 mph shifting to the south overnight.

Tuesday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs 60 to 71. West wind around 10 mph.

Tuesday Night: Mostly cloudy. Patchy fog. Lows 45 to 55. Northwest wind around 10 mph.

Wednesday: Mostly cloudy. Patchy fog. Highs 60 to 71. Northwest wind around 10 mph.

Wednesday Night and Thursday: Mostly cloudy. Lows 46 to 56. Highs 60 to 71.

Thursday Night through Friday Night: Partly cloudy. Lows 46 to 56. Highs 60 to 73.

Saturday through Sunday: Partly cloudy. Highs 66 to 81. Lows 48 to 58.

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