Aspen Journalism Homestake Creek flows from Homestake Reservoir near Red Cliff. A pilot reservoir release to test how to get water to the state line in the event of a Colorado River Compact Call proved hard to track for state engineers. Bethany Blitz/Aspen Journalism In September, Front Range water providers released some water downstream — which they were storing in Homestake Reservoir — to test how they could get it to the state line in the event of a Colorado River Compact call. But accurately tracking and measuring that water — from the high mountain reservoir in the Eagle River watershed all the way through the Colorado River at the end of the Grand Valley — turned out to be tricky, according to a recently released report from the Colorado Division of Water Resources.