Western Flows

Napa River

Near Napa USGS: 11458000 Provisional Data Last Updated: May 24, 09:56 PM PT

Current Flow

26.0 cfs
Steady
No Water Temp Probe

Expected Weather

Temp --°F
Wind -- mph
Rain Chance --%
Pressure -- hPa

Location

Basin: San Pablo Bay County: Napa Elevation: 27 ft Drainage Area: 218.0 mi²

System Insights

  • Did you know? SNOTEL (Snow Telemetry) stations are fully automated and generally located in remote, high-elevation watersheds.

Verify access, permits, and local conditions before entering any waterway.

Today's Weather

Forecast Details

Morning

At 6 AM: 54°F and Overcast, wind NW at 2 mph. By 10 AM: 58°F and Overcast, wind SE at 3 mph.

Afternoon/Evening

At 2 PM: 75°F and Clear, wind SW at 2 mph. By 6 PM: 74°F and Clear, wind NW at 5 mph.

Overnight

Dropping from 59°F at 10 PM to 53°F by 4 AM. Conditions Overcast with wind E at 1 mph.

3-Day Outlook

🌓 First Quarter

Today, May 24

☁️

77° / 54°

Chance of Rain: 1%
5:50 AM 8:21 PM

Monday, May 25

🌫️

69° / 53°

Chance of Rain: 1%
5:50 AM 8:21 PM

Tuesday, May 26

☁️

72° / 47°

Chance of Rain: 1%
5:49 AM 8:22 PM

7-Day Flow History

Source: USGS

The current cfs of 26 CFS is running near the historical median of 26 CFS for this date, indicating average seasonal water levels.

Current (CFS)
Historical Median

7-Day Water Temperature (°F)

Source: USGS

Temperature Data Unavailable

The USGS does not maintain an active temperature probe at this gauge location.

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Glossary & Methodology

Cubic Feet per Second (CFS)

The standard measure for streamflow. One CFS is equal to one cubic foot of water flowing past a specific point in one second (about 7.48 gallons).

Acre-Foot (AF)

The volume of water needed to cover one acre of land to a depth of one foot. One acre-foot is exactly 325,851 gallons.

Snow Water Equivalent (SWE)

The amount of water contained within the snowpack. It can be thought of as the depth of water that would theoretically result if you melted the entire snowpack instantaneously.

Data Sources

Live metrics and historical medians are aggregated directly from the US Geological Survey (USGS), California Data Exchange Center (CDEC), and National Resources Conservation Service (NRCS). Daily flow statistics represent provisional records and are subject to agency revision.