I bet it is Binngham Lake in the Pinery. It is located on Scott Gulch. Douglas County Park, open to the public.
7740 Lakeshore Drive
Directions: I-25 to Lincoln Ave., east on Lincoln Ave.(5.5 miles) to Hwy 83 (Parker Rd.), turn east on Hwy 83 to N. Pinery Pkwy, turn right on E. Lakeview Dr., turn right onto E. Lakeshore Dr.
Hours: one hour before sunrise - one hour after sunset
(1) picnic shelter (seating capacity – 24)
(1) trail system
(1) portable restroom
parking capacity – 25 cars (paved)
Located in the Pinery subdivision, Bingham Lake is quiet oasis that is enjoyed by hikers, mountain bikers, dog enthusiasts, non-motorized boaters and fisherman. Douglas County Parks and Trails manages the recreational facilities and the fishery. The one mile loop trail around the 25 acre lake is a popular attraction year round for local residents and visitors to the area. The shade shelter located at the west trailhead is a perfect location for a picnic as you take in the beauty of the front range and observe the waterfowl that frequent the lake.
The quality warm water fishery at Bingham Lake draws those that want to wet a line and test their skills against some of the various warm water game species that inhabit the lake. This includes large mouth bass, black crappie, walley, blue gill yellow perch and wipers. A stocking program began in the Spring of 2005 and will help insure that that the quality of the fishery is maintained. A small boat ramp is located at the west trailhead and the lake is open to hand-propelled boats, sailboats and vessels powered by electric motors