Rivers
Colorado River Monitor
Real-time tracking of Lake Mead, Lake Powell and 8 other critical reservoirs that supply water to roughly 40 million people across the West.
Colorado River System Status
Below average capacity — monitoring recommended
Last updated: 6/10/2026
Weighted Avg Capacity
38.8%
Warning
0% Critical30% Warning50%100%
Biggest Drop This Week
Elephant Butte
-0.6% • now at 18.7%
Biggest Gain This Week
Lake Havasu
+0.2% • now at 85.3%
Lowest Capacity
Elephant Butte
18.7% capacity
All Reservoirs
10 ReservoirsNV/AZ
Lake Mead
28.5%
Capacity
-0.3% 7d
Acre-feet
7.45M
Pop. Served
25.00M
UT/AZ
Lake Powell
26.2%
Capacity
-0.4% 7d
Acre-feet
6.37M
Pop. Served
40.00M
13 months to critical at current rate
NV/AZ
Lake Mohave
72.1%
Capacity
+0.1% 7d
Acre-feet
1.31M
Pop. Served
2.10M
AZ/CA
Lake Havasu
85.3%
Capacity
+0.2% 7d
Acre-feet
552.7K
Pop. Served
19.00M
WY/UT
Flaming Gorge
68.4%
Capacity
-0.2% 7d
Acre-feet
2.59M
Pop. Served
450.0K
NM/CO
Navajo Reservoir
45.2%
Capacity
-0.5% 7d
Acre-feet
772.3K
Pop. Served
250.0K
CO
Blue Mesa Reservoir
52.3%
Capacity
-0.3% 7d
Acre-feet
492.0K
Pop. Served
180.0K
WY
Fontenelle Reservoir
61.8%
Capacity
-0.1% 7d
Acre-feet
213.5K
Pop. Served
45.0K
NM
Elephant Butte
18.7%
Capacity
-0.6% 7d
Acre-feet
410.5K
Pop. Served
850.0K
Below critical threshold
CO
Morrow Point Reservoir
78.5%
Capacity
+0.1% 7d
Acre-feet
92.0K
Pop. Served
95.0K
System Map
Reservoir Network< 30% Critical30–50% Warning≥ 50% Healthy
About the Colorado River Water Crisis
The Colorado River supplies water to approximately 40 million people across seven U.S. states — Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming — plus Mexico. This dashboard tracks Lake Mead, Lake Powell and eight other critical reservoirs that make up the system.
Click any reservoir card to view detailed information.