CNRFC - Ensemble Products

Short-Range Products (hourly timestep)

Long-Range Products (daily timestep)

Location:

RUSSIAN RIVER - HEALDSBURG (HEAC1)

Latitude: 38.61º N	Longitude: 122.84º W	Elevation: 77 Feet
Location: Sonoma County in California		Bulletin Group: Russian Napa		River Group: Russian Napa

Issuance Time:

Feb 15, 2026 at 9:07 AM PST

Action/Monitor: 20.0 Feet

Minor Flood: 23.0 Feet

Moderate Flood: 27.0 Feet

Major Flood: 29.0 Feet

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 | HEAC1

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
30.0 Feet	Major to disastrous flooding along the reach of the gage occurs. Major flooding occurs in the agricultural sections of Alexander Valley.
29.0 Feet	Major flooding along the reach of the gage will occur. Homes, businesses and secondary roads in the lower sections of Healdsburg will begin to flood. The lower areas of Alexander Valley will begin to flood.
27.0 Feet	Moderate flooding along the reach of the gage will occur. Some secondary roads south of US 101 will have minor to moderate flooding.
25.0 Feet	Low lying areas south of US 101 begin to have minor flooding.
23.0 Feet	Minor flooding of farm land and banks in rural areas along the reach of the gage will occur.