The runoff will put so much water into the Colorado River that Lake Powell is expected to rise 50 feet this year.
Debris from a busy avalanche system can clog streams of water from melting snowpack and lead to flooding in remote towns.
For the first time since the drought monitor has existed, there is no drought in Colorado.
Representatives from the seven states that rely on Colorado River water met at the Hoover Dam to mark a long-negotiated agreement aimed at keeping reservoirs from drying up.
Wet and cool weather patterns do not entirely eliminate large fire activity, but they can reduce the length and severity of a season.
In early February, southwestern McPhee Reservoir was 7 percent full. Now it’s a quarter full and expected to fill up all the way.
A snowy winter and wet spring mean more of Colorado’s snowpack will make it into reservoirs across the Colorado River System.
The seven-state drought contingency plan seeks to keep two Colorado River reservoirs from dropping so low they cannot deliver water or produce hydropower.
The legislation had the support of all 14 senators representing the Colorado River basin states.
The U.S. House and Senate approved the Colorado River drought contingency plan on Monday.