Station Name: TUOLUMNE R NR HETCH HETCHY CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,484 feet

Nearest Address:
Hetch Hetchy Road
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.93742147, -119.7982326

Nearby Water Temperatures

Winter Storm Warning issued February 17 at 1:14PM PST until February 19 at 10:00PM PST by NWS Sacramento CA

Effective: Tue February 17, 2026, 1:14 PM
Expires: Wed February 18, 2026, 4:15 PM

* WHAT...Heavy snow with additional snow accumulations up to 1 foot between 1000 and 3000 feet, 2 to 3 feet above 3000 feet, and up to 4 feet at peaks. Light snowfall accumulations up to an inch below 1000 feet in Shasta County. Winds gusting as high 45 to 55 mph. * WHERE...West Slope Northern Sierra Nevada and adjacent foothills, Western Plumas County/Lassen Park, Shasta County, including the city of Redding, and the Coastal Range. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Dangerous to near impossible travel conditions with chain controls and road closures. Low visibility due to a combination of gusty wind and heavy snow. * ADDITIONAL DETAILS...Snow levels remain around 1500 to 2500 feet through Thursday. Potential to see snow levels as low as 1000 feet along the Sierra and below 1000 feet along the southern Cascades and Shasta County in the morning hours. A brief lull in activity is expected during the day on Wednesday.

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

Winter Storm Warning issued February 17 at 6:32PM PST until February 19 at 10:00PM PST by NWS Hanford CA

Effective: Tue February 17, 2026, 6:32 PM
Expires: Wed February 18, 2026, 2:45 AM

* WHAT...Heavy snow with additional snow accumulations 3 to 4 feet above 6,000 feet with 5 to 7 feet over the highest elevations and 1 to 2 feet at 4,000 feet. Several inches up to a foot down to 3,000 feet. Winds could gust as high as 60 mph. * WHERE...A portion of central California. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Snow levels at 3,000 to 4,000 feet this morning. Light snow accumulations down to 2,000 feet Tuesday night into Wednesday.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Winter Storm Warning issued February 18 at 1:43AM PST until February 19 at 10:00PM PST by NWS Hanford CA

Effective: Wed February 18, 2026, 1:43 AM
Expires: Wed February 18, 2026, 11:15 AM

* WHAT...Heavy snow. Additional snow accumulations of 1 to 2 feet. Up to an additional 3 feet over the highest peaks. Also, 3 to 6 inches of snow expected down to 3,000 feet and up to 3 inches down to 2,000 feet. Winds gusting as high as 50 mph. * WHERE...Sierra Nevada and adjacent foothills. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning and evening commutes. Gusty winds could bring down tree branches.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.