Sonora River

The Sonora River watershed covers of public land. Slopes range from steep orientations in the upper part of the watershed to more gradual topographies in the valleys. The Sonora River watershed is subdivided into six smaller watersheds. ==Ecology==

Biotic communities found within the watershed in order of importance by the area covered are the Sinaloan thornscrub, the plains of Sonora subdivision, semidesert grasslands, the Madrean evergreen woodland, and the central gulf coast subdivision. Average annual precipitation is which occurs in two seasons, late summer-early fall and winter-early spring. ==See also==