Water laps up on the shore of Carter Lake near the marina, April 10, 2015.

Heading north on Interstate 25 from Denver, just prior to exit 250 (Berthoud), one sees a sign that says “Carter Lake.” But that sign is misleading. The road west goes to Carter Lake, which is a great destination, but that is only the beginning.

Continuing a short drive west up the foothills, there are two more recreation areas: Flatiron Reservoir and Pinewood Reservoir. These “three in a row” reservoirs — Carter, Flatiron and Pinewood — are part of the Big Thompson water system that diverts water from the mountains for storage.