⚠️ Thermal Stress Warning: Water temps exceed 68°F. Aquatic organisms under physiological stress.

San Joaquin River Ab Merced River

Near Newman USGS: 11273400 Provisional Data Last Updated: May 11, 09:44 PM Pacific Daylight Time

Current Flow

466.0 cfs
Flow Moderately High Flow Is Steady

Water Temp

79.2 °F
Danger (68°F+)

Expected Weather

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

Location

Historical context for today's date: 25th–75th Percentile — typical for this time of year

System Insights

  • Powerful flows. Wading is difficult; focus on the banks.

  • Water temperature is 79°F — above 68°F, the upper threshold typically considered suitable for cold-water species habitat.

  • Flow has fallen from above the 75th percentile to within the 25th–75th percentile range over the past 7 days (568.0 → 466.0 cfs).

  • Real-time flow is running well below current model projections. Conditions may be changing faster than the forecast anticipated.

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

Today's Weather

Forecast Details

Morning

At 6 AM: 56°F and Partly Cloudy, wind NW at 5 mph. By 10 AM: 79°F and Clear, wind N at 3 mph.

Afternoon/Evening

At 2 PM: 94°F and Clear, wind N at 2 mph. By 6 PM: 95°F and Clear, wind NW at 5 mph.

Overnight

Dropping from 76°F at 10 PM to 65°F by 4 AM. Conditions Clear with wind N at 6 mph.

3-Day Outlook

🌘 Waning Crescent

Today, May 11

☁️

96° / 56°

Chance of Rain: 0%
🌅 5:58 AM 🌇 8:02 PM

Tuesday, May 12

☁️

96° / 62°

Chance of Rain: 1%
🌅 5:57 AM 🌇 8:03 PM

Wednesday, May 13

☁️

83° / 55°

Chance of Rain: 1%
🌅 5:56 AM 🌇 8:04 PM

Flow Trend & 7-Day Forecast

Source: USGS
Current (CFS)
7-Day Forecast
Historical Median
Normal Range (p25–p75)

7-Day Water Temperature (°F)

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

Nearby Gauges