The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 5 come with LakeScope PRO. Full screen
Mackay Reservoir
Custer County, Idaho · about 1,110 acres (1.7 sq mi)
40°F water, level rising, windy Friday (18 mph SE).
About Mackay Reservoir
In Custer County, Idaho, Mackay Reservoir covers about 1,110 acres.
It stretches about 2.9 miles end to end and its shoreline adds up to about 7.3 miles. At about 6,060 ft above sea level, it is a high-country lake, cold for much of the year. Arco is about 29 miles southeast.
- Size
- About 1,110 acres (1.7 sq mi)
- Shoreline
- About 7.3 miles
- End to end
- About 2.9 miles
- Elevation
- About 6,060 ft
- County
- Custer County
The lake from above
Best fishing times
Friday Fair
- 6:45 am – 8:00 amsunrise
- 3:30 pm – 5:15 pm bestsunset, moon overhead · wind 18 mph
Saturday Good
- 6:45 am – 9:00 amsunrise · wind 7 mph
- 3:45 pm – 5:45 pm bestsunset, moon overhead · wind 6 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish to expect
Expect the usual Idaho mix for a lake this size: trout, yellow perch and smallmouth bass. The state fish and wildlife agency lists what is stocked and the rules for this lake. With the surface at 40°F, the notes below say which of them should be biting.
- GoodTrout
Good range. Near the surface and along shorelines.
- GoodYellow perch
Schooled near weed edges and soft bottom.
- SlowSmallmouth bass
Cold. Slow presentations on deep rock.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
- 4
- 5
- 6
5 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
Rising 1.8 ft in 7 days.
Latest reading .
Ice
Open water
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 7:27 am · sunset 5:10 pm · waxing crescent moon (lake time).
Towns and places to stay near Mackay Reservoir
- Arcoabout 29 mi southeast
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Questions about Mackay Reservoir
What fish are in Mackay Reservoir?
Lakes like Mackay Reservoir usually hold trout, yellow perch and smallmouth bass. Check the state fish and wildlife agency for stocking and limits.
How deep is Mackay Reservoir?
We have no published depth for this lake. The 3-D view gives an estimated shape of the bed: where the deep basin and the drop-offs are. Not for navigation.
How big is Mackay Reservoir?
About 1,110 acres, with about 7.3 miles of shoreline.
What town is near Mackay Reservoir?
Arco is about 29 miles southeast.
What is the water temperature at Mackay Reservoir today?
The surface was about 40°F on the latest clear reading. The page updates every day.
Mackay Reservoir on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
