Western Flows

San Joaquin River Above Merced River

Near Newman, CA Stream Gauge USGS: 11273400 Provisional Data Last Updated: May 26, 09:44 PM PT

Current Flow

277 cfs
Steady

Water Temp

75.4 °F
Danger (68°F+)

Expected Weather

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

Location

Basin: Middle San Joaquin-Lower Chowchilla County: Stanislaus Elevation: 3 ft Drainage Area: 7,949.0 mi²
Flow is within the typical range for this time of year (25th–75th percentile, based on 14 years of USGS record).

System Insights

  • Water temperature is 75°F — above the 68°F threshold.

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

Today's Weather

Forecast Details

Morning

At 6 AM: 55°F and Overcast, wind SE at 3 mph. By 10 AM: 66°F and Clear, wind S at 1 mph.

Afternoon/Evening

At 2 PM: 72°F and Mainly Clear, wind N at 10 mph. By 6 PM: 71°F and Overcast, wind N at 8 mph.

Overnight

Dropping from 59°F at 10 PM to 51°F by 4 AM. Conditions Clear with wind SW at 5 mph.

3-Day Outlook

🌔 Waxing Gibbous

Today, May 26

☁️

72° / 54°

Chance of Rain: 3%
5:47 AM 8:14 PM

Wednesday, May 27

☁️

74° / 49°

Chance of Rain: 11%
5:46 AM 8:15 PM

Thursday, May 28

☁️

78° / 52°

Chance of Rain: 27%
5:46 AM 8:16 PM

7-Day Flow History

Source: USGS

The current cfs of 277 CFS is running near the historical median of 248 CFS for this date, indicating average seasonal water levels.

Current (CFS)
Historical Median
Normal Range (p25–p75)

7-Day Water Temperature (°F)

Source: USGS
Current (°F)
Historical Median
68°F Threshold

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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.