Lower Little Colorado

Watershed Hydrology

The Lower Little Colorado Watershed covers an area of approximately 1,326 square miles in northeastern Arizona. It is largely characterized by arid and semi-arid conditions, with annual precipitation ranging from 10-15 inches. The watershed is primarily fed by snowpack from the White Mountains, which peaks in March-April. The Lower Little Colorado River runs through the middle of the watershed, providing the majority of the surface water. The watershed contains several small reservoirs, including Lyman Lake, which serves as a popular recreational area. The area is vulnerable to drought and has experienced significant water shortages in recent years. Climate change is expected to exacerbate these conditions, leading to longer and more severe droughts. The watershed is also home to several endangered species, including the Little Colorado spinedace and the Mexican spotted owl.


Surface Flows

Lower Little Colorado Watershed

Snowpack Depths

Lower Little Colorado Watershed

Dams & Reservoirs

Lower Little Colorado Watershed

Groundwater Levels

Lower Little Colorado Watershed

Lower Little Colorado Rivers

Rivers of the Watershed