New data shows that water levels in major reservoirs including Lakes Mead and Powell are well below average for this time of ...

Lake Tahoe is one of the lakes that has now reached full capacity for the first time in several years following powerful storms and substantial snow pack melt.

California's once arid landscapes transformed into gushing waterfalls, swollen lakes and snow-covered mountaintops.

California’s two biggest reservoirs are all but full after reaching perilously low levels late last year. Lake Shasta, at 96% full, and Lake Oroville, at 100%, had fallen to around 25% to 30% of ...

Since golden mussels were recently identified in the Sacramento-San Joaquin Delta, waterways in parts of Northern California and the Bay Area have introduced new rules for boaters.

Flying over the Sierra Nevada, teams are using lasers to measure California's vast snowpack, tracking flood risks as the snow melts.

Since golden mussels were recently identified in the Sacramento-San Joaquin Delta, waterways in parts of Northern California and the Bay Area have introduced new rules for boaters.

More photos of California's reservoirs show how this year's historic rainfall totals have replenished water levels in some drought-stricken areas.

California has faced an onslaught of powerful, atmospheric river storms this winter, which has led to record-breaking snowpack, nearly full reservoirs and overflowing watersheds.

A year of substantial rainfall has brought needed water to California. But the region's long-term problems remain.

California has built up its water infrastructure — reservoirs, wells and irrigation systems — in part to account for the imbalanced timing in precipitation.