Chattfield Reservoir, Cherry Creek and Sloan Lake (Small). During the week those lakes are great but after 5 they will get a lil crowded. Weekends forget about it. 2 hr drive to get good water on weekends.
Early May you will need a wetsuite. Water around here will be low to mid 60's in early may. September is the best low crowds and the water is still nice.
There are a lot of private lakes Norht of Denver and South of Fort Collins in the western I25 corridor.
(Message edited by burn229 on February 02, 2008)