Grand

Watershed Hydrology

The Grand Watershed (HUC 04110004) covers an area of approximately 1,745 square miles in Colorado. The hydrology of the watershed is dominated by the Colorado River, which runs through the area, and several smaller tributaries. The watershed receives significant snowfall during the winter months, with snowpack levels typically peaking in March. Surface water in the watershed is used for irrigation, wildlife habitat, and recreation. The watershed is home to several reservoirs, including Lake Granby and Shadow Mountain Reservoir, which are used for water storage and hydroelectric power generation. The primary constituents of these reservoirs are water, sediment, and dissolved minerals. In terms of climatic trends, the Grand Watershed has experienced a long-term increase in temperatures, with the average temperature increasing by approximately 2 degrees Fahrenheit over the past century. This warming trend is expected to continue in the coming decades, which could have significant impacts on the region's hydrology and ecology. Additionally, the watershed is prone to severe droughts, which can have significant impacts on water availability and wildlife populations.


Surface Flows

Grand Watershed

Snowpack Depths

Grand Watershed

Dams & Reservoirs

Grand Watershed

Groundwater Levels

Grand Watershed

Grand Rivers

Rivers of the Watershed