CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

KLAMATH RIVER - ORLEANS (ONSC1)

Latitude: 41.30º N	Longitude: 123.54º W	Elevation: 354 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: Klamath

Issuance Time:

Dec 31 2025 at 1:20 PM PST

Next Issuance:

Jan 01 2026 at 9:00 AM PST

Action/Monitor: 32.0 Feet

Minor Flood: 38.0 Feet

Moderate Flood: 43.0 Feet

Major Flood: 48.0 Feet

Plot Type:

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	71,400	21.80	Dec 29, 2024
2024*	51,900	18.67	Jan 13, 2024
2023*	67,800	21.49	Dec 27, 2022
2022*	21,100	11.67	Jan 7, 2022
2021*	45,300	17.33	Jan 13, 2021
Historical High Stage/Flow Events (Period of Record - Oct 1927 to Present) - Ranked by Flow
1965*	307,000	76.50	Dec 22, 1964
1974*	279,000	37.24	Jan 16, 1974
1986*	278,000	37.16	Feb 18, 1986
1997*	258,000	37.79	Jan 01, 1997
2006*	213,000	34.80	Dec 30, 2005
1956*	202,000	59.40	Dec 22, 1955
* Discharge affected by regulation or diversion

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
43.0 Feet	Flood waters are likely to cover Highway 96 in numerous locations and will threaten residences and businesses in and around orleans including Sandy Bar Cabins, Riverside Trailer Park and the downtown area. All persons in the vicinity of the river should take appropriate action and move to higher ground if necessary.
40.0 Feet	Extensive flooding of areas south of Highway 96 near Orleans, Highway 96 north of the bridge at Orleans, at Ishi Pishi Bar, and near Slate Creek. Flooding of the fire house and other buildings on the southwest side of Orleans is expected. Flooding of Highway 96 in Orleans is possible.
38.0 Feet	Extensive flooding of low lying areas south of Highway 96 near Orleans and of the highway itself north of the bridge at Orleans. Flooding is likely near Ishi Pishi Bar and Slate Creek. Water may enter the fire house and other buildings on the southwest side of Orleans.
37.0 Feet	Flooding in low lying areas south of Highway 96 near Orleans and on the highway itself north of the bridge at Orleans will occur. There may also be flooding of Highway 96 at Ishi Pishi Bar.
35.0 Feet	Flooding is likely in lower areas south of Highway 96 near Orleans and on the highway itself north of the bridge at Orleans. Flooding is possible on Highway 96 near Ishi Pishi Bar.
34.0 Feet	Flooding is possible along Highway 96 north of the bridge at Orleans, and in adjacent low-lying areas.

Official 7 Day National Weather Service Forecast (CAZ105)

Today: Rain. Highs 46 to 59.

Tonight: Mostly cloudy. Rain likely in the evening, then chance of rain overnight. Lows 41 to 51.

Friday: Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon. Breezy. Highs 48 to 63. Southeast wind around 20 mph in the valleys and southeast 20 to 30 mph at higher elevation.

Friday Night: Breezy, rain. Lows 40 to 50. South wind 20 to 25 mph with gusts at higher elevations to around 45 mph.

Saturday: Windy, rain. Highs 44 to 59. South wind 20 to 30 mph with gusts at higher elevations to around 50 mph.

Saturday Night: Rain showers and slight chance of thunderstorms. Lows 38 to 48.

Sunday and Sunday Night: Rain. Highs 41 to 55. Lows 37 to 47.

Monday: Rain and snow. Highs 40 to 53.

Monday Night through Wednesday: Mostly cloudy. Chance of rain and snow. Lows 32 to 42. Highs 41 to 56.

Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Eureka Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.

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