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Lakes / Wyoming / Sublette County / Big Sandy Reservoir

Big Sandy Reservoir, Wyoming

2,748 acres
Surface Area

Where It Sits, and How Deep It Goes

Locator - Wyoming

CheyenneJacksonBig Sandy ReservoirSublette Co.

42.27 degrees N, 109.43 degrees W - Sublette County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Wyoming Game and Fish Department coordinates, not by eye. Schematic - not a survey map.

How Big Sandy Reservoir Stacks Up

Fish Species

BurbotBrook TroutBluegillBrown TroutChannel CatfishCutthroat TroutMountain WhitefishRainbow Trout

Species recorded for this lake. Presence only - no abundance ratings.

Lakes Nearby

LakeCountyDistanceSurface Area
Eden ReservoirSweetwater4.6 mi1,361 acres
Juel ReservoirSublette6.6 mi56.6 acres
Zembo ReservoirSublette20 mi13 acres
Hay Meadow ReservoirFremont22 mi108.21 acres
Sheet LakeSublette28 mi29 acres
Mud LakeSublette30 mi13 acres

Straight-line distance between lake centers.

Facts and Figures

Waterbody ID120029824
CountySublette
Coordinates42.2710, -109.4348

Questions About Big Sandy Reservoir

How Big Is Big Sandy Reservoir?

Big Sandy Reservoir covers 2,748 acres in Sublette County, Wyoming.

What Fish Are in Big Sandy Reservoir?

The WGFD lists Burbot, Brook Trout, Bluegill, Brown Trout, Channel Catfish, Cutthroat Trout, Mountain Whitefish and Rainbow Trout for Big Sandy Reservoir.

What Is the Largest Lake in Sublette County?

Fremont Lake is the largest lake in Sublette County, at 5,051.16 acres.

Deepest Natural Lakes in Wyoming

#LakeCountySurface AreaMax Depth
1Deep LakePark285 acres472 ft
2Lake RenoPark107 acres222 ft
3Snowdrift LakeTeton57 acres174 ft
4Crater LakeBig Horn39 acres166 ft
5Beauty LakePark94 acres165 ft

All 120 Wyoming lakes ranked by depth

Largest Lakes in Wyoming

#LakeCountySurface AreaMax Depth
1Yellowstone LakeTeton84,442 acres-
2Flaming Gorge ReservoirSweetwater38,888.36 acres440 ft
3Jackson LakeTeton26,853.22 acres-
4Pathfinder ReservoirCarbon22,000 acres192 ft
5Seminoe ReservoirCarbon20,000 acres200 ft

All 783 Wyoming lakes ranked by surface area

Sources: Wyoming Game & Fish lake data (ID 120029824). Verified October 30, 2026.