Station Name: MF SAN JOAQUIN R NR MAMMOTH LAKES CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 7,618 feet / 2,322 meters

Nearest Address:
A12 Devils Postpile Campground Rd
Mammoth Lakes, CA 93546
Madera County

GPS Coordinates: 37.63194444, -119.0863889

Nearby Water Temperatures

Extreme Heat Warning issued August 19 at 10:36PM PDT until August 24 at 8:00AM PDT by NWS Hanford CA

Effective: Tue August 19, 2025, 10:36 PM
Expires: Wed August 20, 2025, 7:00 AM

* WHAT...Dangerously hot conditions with high temperatures up to 105 expected. * WHERE...Bakersfield, Buena Vista, Coalinga - Avenal, Fresno-Clovis, Fresno-Tulare Foothills, Mariposa Madera Foothills, South End San Joaquin Valley, South End Sierra Foothills, West Side Mountains South of 198, and West Side Mountains north of 198. * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Heat Advisory issued August 19 at 10:36PM PDT until August 24 at 8:00AM PDT by NWS Hanford CA

Effective: Tue August 19, 2025, 10:36 PM
Expires: Wed August 20, 2025, 7:00 AM

* WHAT...High temperatures up to 107 expected. Warm overnight lows in the low to mid 70s from Friday until Sunday morning. * WHERE...San Joaquin Valley * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Extreme Heat Warning issued August 19 at 10:36PM PDT until August 24 at 8:00AM PDT by NWS Hanford CA

Effective: Tue August 19, 2025, 10:36 PM
Expires: Wed August 20, 2025, 7:00 AM

* WHAT...Dangerously hot conditions with high temperatures up to 105 expected. * WHERE...Bakersfield, Buena Vista, Coalinga - Avenal, Fresno-Clovis, Fresno-Tulare Foothills, Mariposa Madera Foothills, South End San Joaquin Valley, South End Sierra Foothills, West Side Mountains South of 198, and West Side Mountains north of 198. * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Heat Advisory issued August 19 at 10:36PM PDT until August 24 at 8:00AM PDT by NWS Hanford CA

Effective: Tue August 19, 2025, 10:36 PM
Expires: Wed August 20, 2025, 7:00 AM

* WHAT...High temperatures up to 107 expected. Warm overnight lows in the low to mid 70s from Friday until Sunday morning. * WHERE...San Joaquin Valley * WHEN...From 11 AM Friday to 8 AM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Heat Advisory issued August 19 at 1:41PM PDT until August 23 at 11:00PM PDT by NWS Sacramento CA

Effective: Tue August 19, 2025, 1:41 PM
Expires: Wed August 20, 2025, 4:00 PM

* WHAT...High temperatures 95 to 106 expected. Overnight low temperatures in the mid 60s to 70s. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Carquinez Strait and Delta, Mountains Southwestern Shasta County to Western Colusa County, Shasta Lake Area / Northern Shasta County, Sacramento Valley and Northern San Joaquin Valley. * WHEN...From 11 AM Friday to 11 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.