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Lakes / Wyoming / Big Horn County / Lake Marion

Lake Marion, Wyoming

13 acres
Surface Area
35 ft
Max Depth
12 ft
Average Depth

Where It Sits, and How Deep It Goes

Locator - Wyoming

CheyenneJacksonLake MarionBig Horn Co.

44.33 degrees N, 107.21 degrees W - Big Horn 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.

Depth Profile - Lake Marion

0 ft - SurfaceAverage Depth - 12 ftMax Depth - 35 ftA Typical Shallow Lake - Under 20 ft Deep

Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.

How Lake Marion Stacks Up

Fish Species

Brook TroutLake Trout

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

Lakes Nearby

LakeCountyDistanceSurface Area
Mistymoon LakeBig Horn0.6 mi40 acres
Lake HelenBig Horn0.7 mi53 acres
Fortress LakesBig Horn0.9 mi10 acres
Gunboat LakeBig Horn1.1 mi21 acres
Florence LakeBig Horn1.9 mi8 acres
Middle Cloud Peak LakeBig Horn2.5 mi25 acres

Straight-line distance between lake centers.

Facts and Figures

Waterbody ID70655170
CountyBig Horn
Coordinates44.3334, -107.2144

Questions About Lake Marion

How Big Is Lake Marion?

Lake Marion covers 13 acres in Big Horn County, Wyoming.

How Deep Is Lake Marion?

Lake Marion reaches 35 ft at its deepest. Its average depth is 12 ft.

What Fish Are in Lake Marion?

The WGFD lists Brook Trout and Lake Trout for Lake Marion.

What Is the Largest Lake in Big Horn County?

Bighorn Lake is the largest lake in Big Horn County, at 12,422.53 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 70655170). Verified October 30, 2026.