Smith Reservoir
Looking across the reservoir towards Blanca Peak
Smith Reservoir Location in Colorado
Location	Costilla County, Colorado
Coordinates	37°23′34″N 105°31′50″W / 37.39278°N 105.53056°W / 37.39278; -105.53056[1]
Type	reservoir
Primary inflows	Trinchera Creek Sangre de Cristo Creek Ute Creek and several other smaller creeks
Primary outflows	Trinchera Creek
Managing agency	Trinchera Irrigation Company[2]
Designation	Smith Reservoir State Wildlife Area
Built	1914 (1914)[3]
Water volume	14,058 acre⋅ft (17,340,000 m3)[3]
Surface elevation	7,716 ft (2,352 m)[1]
Frozen	Freezes in winter

Smith Reservoir is located in Costilla County, Colorado, south of Blanca in the San Luis Valley. The reservoir is owned by the Trinchera Irrigation Company.^[2]

The rockfill dam, Smith Dam,^[4] was built in 1914 and — according to the National Inventory of Dams — stores 14,058 acre⋅ft (17,340,000 m³) of water.^[3] It impounds Trinchera Creek. Sangre de Cristo Creek and several smaller creeks also flow into the reservoir; prior to the reservoir's construction, Sangre de Cristo Creek had its confluence with Trinchera Creek here.

The lake and the land immediately surrounding it are also designated as the Smith Reservoir State Wildlife Area. It offers trout fishing, waterfowl hunting, and camping.^[5]

• Smith Reservoir State Wildlife Area (includes map)