Tuolumne River Below Early Intake

Near Mather USGS: 11276900 Provisional Data Last Updated: May 11, 09:44 PM Pacific Daylight Time

Current Flow

2,780 cfs
Flow Extremely High Flow Is Steady

Water Temp

51.8 °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

  • Extreme flows. Danger: high velocity and zero clarity.

  • Flow has risen from within the 25th–75th percentile range to above the 75th percentile over the past 7 days (1,120 → 2,780 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: 64°F and Overcast, wind E at 7 mph. By 10 AM: 83°F and Clear, wind W at 4 mph.

Afternoon/Evening

At 2 PM: 88°F and Clear, wind W at 8 mph. By 6 PM: 86°F and Clear, wind W at 6 mph.

Overnight

Dropping from 74°F at 10 PM to 70°F by 4 AM. Conditions Clear with wind E at 7 mph.

3-Day Outlook

🌘 Waning Crescent

Today, May 11

☁️

88° / 64°

Chance of Rain: 0%
🌅 5:53 AM 🌇 7:59 PM

Tuesday, May 12

☁️

90° / 68°

Chance of Rain: 2%
🌅 5:52 AM 🌇 8:00 PM

Wednesday, May 13

☁️

75° / 58°

Chance of Rain: 2%
🌅 5:51 AM 🌇 8:01 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