About the alamosa river

The Alamosa River is a tributary of the Rio Grande in southern Colorado. It stretches 50 miles from its headwaters in the San Juan Mountains to its confluence with the Rio Grande. Historically, the river was used for gold mining and agriculture, but today, it is primarily used for recreation, including fishing and kayaking. The river's hydrology is heavily influenced by snowmelt, which can cause significant flooding during the spring and early summer. There are several reservoirs and dams on the Alamosa River, including Terrace Reservoir and Platoro Reservoir. These reservoirs were built for irrigation purposes and to manage the river's flow for flood control. Despite the use of the river for recreation and agriculture, efforts are being made to improve water quality and habitat for fish and wildlife.

Peak Annual Discharge

Seasonal Comparison

Top Surface Flows

Expected Streamflow Range