Sanchez Reservoir sits in the high desert of Costilla County, a 1,462-acre State Wildlife Area south of San Luis that draws anglers from across southern Colorado. The reservoir occupies a broad, sun-drenched basin with sweeping views of the Sangre de Cristo Mountains to the west, and on a calm morning the water mirrors the sky in a way that makes the drive down the dirt roads feel worthwhile.
Fishing is the main draw at Sanchez Reservoir, and the lake delivers solid warm-water action for walleye, northern pike, channel catfish, saugeye, yellow perch, carp, and white suckers. Walleye and northern pike run large here, though the Colorado Department of Public Health and Environment has issued a fish consumption advisory for mercury in those two species, so catch-and-release is the safer bet for trophy fish. Live bait, artificial lures, and flies are all permitted, but bow fishing is prohibited. Both motorized and non-motorized boats are allowed for fishing use, giving anglers the flexibility to troll open water or paddle into quieter coves.
Camping at Sanchez Reservoir is free and dispersed, with no developed sites or reservations required. The area accommodates RVs and trailers, though the access roads are unpaved and can be rough when wet. There are no restrooms, potable water, or trash services on-site, so visitors need to pack in everything they need and pack out everything they bring. Cell service is limited to nonexistent, which is part of the appeal for people looking to disconnect.
Water levels at Sanchez Reservoir fluctuate significantly from year to year, and low-water conditions can leave the boat ramp high and dry. When the lake drops, the exposed clay and sand shoreline becomes soft and difficult to walk through, so waterproof boots are a good idea. Mosquitoes can be fierce during summer months, particularly in the afternoon, so bring plenty of bug spray.
Swimming, water skiing, and all water-contact recreation are strictly prohibited at Sanchez Reservoir. Anyone over 18 needs a valid Colorado hunting or fishing license, or a State Wildlife Area pass, to access the property. Wild horses have been spotted in the surrounding area, adding an unexpected element of wildlife viewing to what is primarily a fishing destination in one of Colorado's most remote and quiet corners.