Mf San Joaquin River

Near Mammoth Lakes USGS: 11224000 Provisional Data Last Updated: May 11, 09:44 PM Pacific Daylight Time

Current Flow

521.0 cfs
Flow Moderately High Flow Is Rising

Water Temp

44.2 °F
Safe (< 65°F)

Expected Weather

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

Location

Historical context for today's date: Above 75th Percentile — higher than usual for this time of year

System Insights

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

  • Water temperature is 44°F — below 50°F, the threshold associated with cold shock risk for immersion.

  • Flow has risen from below the 25th percentile to above the 75th percentile over the past 7 days (168.0 → 521.0 cfs).

  • Real-time flow is running well above current model projections. On-the-ground conditions are outpacing the forecast.

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

Today's Weather

Forecast Details

Morning

At 6 AM: 47°F and Clear, wind NW at 1 mph. By 10 AM: 62°F and Clear, wind N at 2 mph.

Afternoon/Evening

At 2 PM: 66°F and Clear, wind SW at 14 mph. By 6 PM: 62°F and Clear, wind SW at 10 mph.

Overnight

Dropping from 52°F at 10 PM to 48°F by 4 AM. Conditions Clear with wind SW at 6 mph.

3-Day Outlook

🌘 Waning Crescent

Today, May 11

☀️

66° / 47°

Chance of Rain: 1%
🌅 5:50 AM 🌇 7:55 PM

Tuesday, May 12

🌧️

66° / 48°

Chance of Rain: 7%
🌅 5:49 AM 🌇 7:56 PM

Wednesday, May 13

🌤️

59° / 43°

Chance of Rain: 2%
🌅 5:48 AM 🌇 7:57 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