January 13, 2026. Dallas and I hike to Old Dillon Reservoir, starting at the trailhead off of Dillon Dam Road (Silverthorne, Colorado) and wearing micro-spikes. The day is mostly sunny and very warm – in the low forties, Fahrenheit. The reservoir, which is set in a little hollow on top of a low hill, is reached by a pedestrian path that climbs the hill in a series of switchbacks. The view from the top is excellent, especially to the south, looking down into (new) Dillon Reservoir. The Old Reservoir is very small – perhaps a quarter mile across – and impounded by a low earth-fill dam on its south side. Today, it is covered with snow, in contrast to the new reservoir, which mostly has clear ice and open water. We have lunch sitting atop boulders that are set near the pedestrian path that encircles the Old Reservoir. One is a tan quartzite with glacial striae and the other is a reddish granite; a much larger boulder grey granite with xenoliths of gneiss stood nearby and acted as a windbreak. I set up the MSR stove and made tea. We then walk east along Orahood 9039 (a woods road) as far as a vantage that provide a great view of the main Dillon Dam. About a foot of snow was on the road, but a well-packed trail had been tamped down by previous hikers. Our route back took us completely around the Old Reservoir. Most of the pedestrian path had at least some snow, but we had to take our micro-spikes off as we crossed the dam, for it was bare gravel, and put them back on once we started our descent of the hill. 2:15.