CNRFC Ensemble Plot for KLMC1

Short-Rng Pks	10D Prob	10 Accum
4x5D Prob	Mnth Prob	Seas Trnd
WY Trend	WY Accum	Multi-Yr Accum
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KLAMATH RIVER - KLAMATH (KLMC1)

Latitude:
41.51º N

Longitude:
123.98º W

Elevation:
6 Feet

Location: Del Norte County in CA

River Group: North Coast

Issuance Time:

May 01 2025 at 8:07 AM PDT

Action/
Monitor:
30.0 Ft

Minor
Flood:
38.0 Ft

Moderate
Flood:
42.0 Ft

Major
Flood:
46.0 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. Plot Type:

CSV Ensemble Files (Data in kcfs): Forecast Group | KLMC1

Cursor readout:

Show:

		Official Forecast (Deterministic)
		Ensemble Mean
		Model Traces

	Hourly Probabilities
		0-5% chance
		5-25% chance
		25-40% chance
		40-60% chance

What information is considered in this forecast?

Verification / Historical Plots
<-- Previous Forecast	Forecast Date: Forecast Cycle:

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

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. Highs 57 to 70. Southwest wind around 5 mph.

Tonight: Mostly cloudy. Patchy fog. Lows 40 to 50. West wind around 5 mph in the evening becoming light.

Friday: Mostly cloudy. Patchy fog in the morning. Slight chance of rain in the afternoon. Highs 54 to 64. Light winds becoming west around 5 mph in the afternoon.

Friday Night: Cloudy. Patchy fog. Chance of rain. Lows 40 to 50. Northwest wind around 10 mph.

Saturday: Mostly cloudy. Chance of rain. Highs 52 to 62. Northwest wind 10 to 20 mph with gusts to around 35 mph.

Saturday Night through Sunday Night: Mostly clear. Lows 37 to 47. Highs 54 to 69.

Monday through Tuesday: Mostly clear. Highs 62 to 76. Lows 40 to 50.

Tuesday Night and Wednesday: Partly cloudy. Lows 44 to 54. Highs 60 to 75.

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.