Return to Article Lake Mead Elevation Lake Mead October Elevation, 1938-2009. Colorado River A map of the Colorado River Basin. California Central Valley Project A map of California's current Central Valley Project features. Sacramento River Watershed Map of Sacramento River Watershed. Great Basin A Map of the multi-state Great Basin. New Mexico Rainfall Rainfall over 2,000 years in New Mexico. Colorado River Flow Graph Annual flow volume of the Colorado River. Return to top
