Station Name: TUOLUMNE R AB EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,493 feet

Nearest Address:
Preston Falls Trail
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.87936848, -119.947126

Nearby Water Temperatures

Winter Storm Warning issued April 10 at 10:34AM PDT until April 12 at 11:00PM PDT by NWS Sacramento CA

Effective: Fri April 10, 2026, 10:34 AM
Expires: Sat April 11, 2026, 11:15 AM

* WHAT...Heavy snow expected. Total snow accumulations 1 to 2 feet above 4500 feet, with up to 3 to 4 feet at the highest peaks. Minor snowfall accumulations of 2 to 4 inches down to 4000 feet. Wind gusts as high as 50 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park Counties. * WHEN...From 5 PM this afternoon to 11 PM PDT Sunday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the this evenings commute and weekend mountain travel. * ADDITIONAL DETAILS...Snow levels generally remain above pass levels through this afternoon, dropping to around 6000-7000 ft tonight-Saturday, then lowering to around 4000-5000 ft Sunday. Heavy snowfall rates of 1-2 inch per hour, with the heaviest snowfall Saturday afternoon through Sunday.

Check the latest road conditions from Caltrans online at quickmap.dot.ca.gov or dial 5 1 1.

Winter Storm Warning issued April 10 at 7:34PM PDT until April 12 at 11:00PM PDT by NWS Hanford CA

Effective: Fri April 10, 2026, 7:34 PM
Expires: Sat April 11, 2026, 4:00 AM

* WHAT...Heavy snow expected. Low-end storm total of 10 inches and high-end total of 30 inches expected in Madera and Mariposa Counties and Yosemite National Park above 7,000 ft. Winds gusting to 55 mph or higher. * WHERE...Sierra Nevada above 7,000 feet from Yosemite NP to the Lake Isabella Area. * WHEN...Until 11 PM PDT Sunday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.

Winter Storm Warning issued April 11 at 3:48AM PDT until April 12 at 11:00PM PDT by NWS Hanford CA

Effective: Sat April 11, 2026, 3:48 AM
Expires: Sat April 11, 2026, 12:00 PM

* WHAT...Heavy snow expected. Low-end storm total of 10 inches and high-end total of 30 inches expected in Madera and Mariposa Counties and Yosemite National Park above 7,000 ft. Winds gusting to 55 mph or higher. * WHERE...A portion of central California. * WHEN...Until 11 PM PDT Sunday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening.

Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.