All Basins of HYDRA Project
Modeled watersheds are from the Feather River watershed in the north to the Kern River watershed in the south, encompassing a total area of 47,657 km2 and spanning approximately 628 km. Basins vary greatly by size, the Feather River watershed is the largest, and the Bear River watershed the smallest. The southern portion of the Sierra Nevada is generally higher, with elevations greater than 4,000 m at the crest, while the northern watersheds are generally less than 3,000 m at peak elevations. Most Sierra Nevada watersheds are steep at their headwaters, with slope generally decreasing toward the alluvial Central Valley, and modeled watersheds include the crest of the Sierra Nevada to the floor of the Central Valley (mean outlet elevation is 153 m).