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SnoWatch: Big Thompson River Watershed


Watershed:format for printing

The Big Thompson River watershed drains about 305 square miles above the canyon mouth west of Loveland. In an average year, the Big Thompson River watershed produces about 124,000 acre-feet of water. Nearly 75% of the production (93,000 acre-feet) occurs during the peak snowmelt months of April through July.

The Big Thompson River watershed provides water to the cities of Berthoud, Johnstown and Loveland, and numerous ditch and reservoir companies in southwestern Larimer County.

Our SnoWatch system displays year-to-date snow accumulation for three SNOTELs in and near the Big Thompson River watershed. Bear Lake and Willow Park are both within the watershed and represent middle-elevation and high-elevation snow accumulation, respectively. Lake Irene is located on the other side of the Continental Divide (in the Upper Colorado River watershed) but can give indications of snow accumulation in the westernmost portions of the watershed.