Mackay Reservoir Boat Ramps

2 boat launches are mapped on Mackay Reservoir in Custer County, Idaho.

1 of these launches include facility details from Idaho Department of Fish and Game.

Mackay Reservoir facts

Surface area1,178 acres
TypeReservoir
Average depthabout 38 ft (normal storage ÷ surface area)
Shoreline lengthabout 7.3 miles
Surface elevation6,060 ft above sea level
DamMackay, completed 1918
Dam size75 ft high, 1,430 ft long
Dam purposesOther
Dam ownerPrivately owned
Normal storage45,000 acre-feet
Impounded stream Big Lost River Sinks

Sources: USGS National Hydrography Dataset (public domain); HydroLAKES v1.0 (Messager et al. 2016, CC BY 4.0); U.S. Army Corps of Engineers National Inventory of Dams (NID ID ID00181). Matched to this page by name and location; modelled values are approximate. See all sources.

Mackay Reservoir water level & temperature

Loading live USGS readings…

Wildlife you might see at Mackay Reservoir

Most-observed birds: Common Loon (6), Ring-billed Gull (3), Song Sparrow (3), Sage Thrasher (3), Osprey (3), Sabine's Gull (2), Red-tailed Hawk (2), American Robin (2), Hermit Thrush (2), Caspian Tern (2).

Other wildlife: Western Terrestrial Garter Snake (1).

Numbers are research-grade observations of each species recorded in and around the water by the iNaturalist community (46 bird, mammal, reptile and amphibian species in the area). Sightings are not guaranteed.

Counties