Reservoirs
Reservoirs
Storage vs the historical normal for major western reservoirs.
Data through Oct 15, 2026 · updated Oct 17, 2026
Western reservoir levels, total storage
34.02M af · Oct 15, 2026
- Total storage
Blue Mesa Reservoir water level
Live reservoir storage and water level in Gunnison-Colorado basin, Colorado
139,818 af · Oct 15, 2026
-65% vs 5-yr median
Lake Powell water level
Live reservoir storage and water level in Colorado (Upper) basin, Arizona / Utah
5.25M af · Oct 15, 2026
-27% vs 5-yr median
Lake Mead water level
Live reservoir storage and water level in Colorado (Lower) basin, Nevada / Arizona
6.81M af · Oct 15, 2026
-22% vs 5-yr median
Boysen Reservoir water level
Live reservoir storage and water level in Wind-Bighorn-Missouri basin, Wyoming
504,275 af · Oct 15, 2026
-20% vs 5-yr median
Flaming Gorge Reservoir water level
Live reservoir storage and water level in Green-Colorado basin, Utah / Wyoming
2.46M af · Oct 15, 2026
-18% vs 5-yr median
Elephant Butte Reservoir water level
Live reservoir storage and water level in Rio Grande basin, New Mexico
94,701 af · Oct 15, 2026
-17% vs 5-yr median
Lake Oroville water level
Live reservoir storage and water level in Feather-Sacramento basin, California
1.53M af · Oct 15, 2026
-14% vs 5-yr median
Millerton Lake level
Live reservoir storage and water level in San Joaquin basin, California
226,693 af · Oct 15, 2026
-10% vs 5-yr median
Navajo Reservoir water level
Live reservoir storage and water level in San Juan-Colorado basin, New Mexico / Colorado
864,313 af · Oct 15, 2026
-10% vs 5-yr median
Shasta Lake level
Live reservoir storage and water level in Sacramento basin, California
2.37M af · Oct 15, 2026
-10% vs 5-yr median
Folsom Lake level
Live reservoir storage and water level in American-Sacramento basin, California
401,070 af · Oct 15, 2026
-8% vs 5-yr median
New Melones Lake level
Live reservoir storage and water level in San Joaquin basin, California
1.51M af · Oct 15, 2026
-6% vs 5-yr median
Lake Havasu water level
Live reservoir storage and water level in Colorado (Lower) basin, Arizona / California
546,279 af · Oct 15, 2026
-5% vs 5-yr median
Hungry Horse Reservoir water level
Live reservoir storage and water level in Flathead-Columbia basin, Montana
3.06M af · Oct 15, 2026
-1% vs 5-yr median
Whiskeytown Lake level
Live reservoir storage and water level in Sacramento basin, California
237,005 af · Oct 15, 2026
0% vs 5-yr median
Canyon Ferry Lake level
Live reservoir storage and water level in Missouri basin, Montana
1.48M af · Oct 15, 2026
+2% vs 5-yr median
New Don Pedro Reservoir water level
Live reservoir storage and water level in Tuolumne-San Joaquin basin, California
1.51M af · Oct 15, 2026
+2% vs 5-yr median
Lake Mohave water level
Live reservoir storage and water level in Colorado (Lower) basin, Nevada / Arizona
1.64M af · Oct 15, 2026
+10% vs 5-yr median
Fontenelle Reservoir water level
Live reservoir storage and water level in Green-Colorado basin, Wyoming
274,722 af · Oct 15, 2026
+21% vs 5-yr median
Trinity Lake level
Live reservoir storage and water level in Trinity-Klamath basin, California
1.65M af · Oct 15, 2026
+33% vs 5-yr median
San Luis Reservoir water level
Live reservoir storage and water level in San Joaquin-Delta basin, California
1.46M af · Oct 15, 2026
+38% vs 5-yr median