Blue River Trike Path
The Blue River Watershed includes all of Summit County, which
encompasses approximately 619 square miles. An additional 61 square
miles of the Lower Blue lie within Grand County, and the very top of the
Tenmile Basin lies within Lake County. Most of the total annual stream flow results from snow melt during the
spring and early summer. The majority of snowfall typically occurs
January through April. Thunderstorm activity produces significant,
though short-lived, rainfall events in July and August. Impacts from mining, large water storage projects of Dillon and Green
Mountain Reservoir and Interstate 70 play a large role in the water and
habitat quality throughout the watershed.