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Lakes / Indiana / Monroe County / Griffy Reservoir

Griffy Reservoir, Indiana

118.44 acres
Surface Area

Where It Sits, and How Deep It Goes

Locator - Indiana

IndianapolisFort WayneGriffy ReservoirMonroe Co.

39.20 degrees N, 86.52 degrees W - Monroe County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.

How Griffy Reservoir Stacks Up

Lakes Nearby

LakeCountyDistanceSurface Area
Lake LemonMonroe7.9 mi1,503.82 acres
Yellowwood LakeBrown9.6 mi123.1 acres
Monroe LakeMonroe11 mi11,112.45 acres
Gallahue LakeBrown11 mi27.21 acres
Edward Lewis Lake DamBrown13 mi37.11 acres
Hollybrook LakeOwen15 mi33.13 acres

Straight-line distance between lake centers.

Facts and Figures

Waterbody ID90354080
CountyMonroe
Coordinates39.2015, -86.5198

Questions About Griffy Reservoir

How Big Is Griffy Reservoir?

Griffy Reservoir covers 118.44 acres in Monroe County, Indiana.

What Is the Largest Lake in Monroe County?

Monroe Lake is the largest lake in Monroe County, at 11,112.45 acres.

Largest Lakes in Indiana

#LakeCountySurface AreaMax Depth
1Monroe LakeMonroe11,112.45 acres-
2Patoka LakeOrange9,120.83 acres-
3Brookville LakeFranklin4,364.22 acres-
4Lake WawaseeKosciusko3,426.28 acres-
5Broad PondGibson2,941.52 acres-

All 425 Indiana lakes ranked by surface area

Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 90354080). Verified October 30, 2026.