Lakes / Wisconsin / Johnson Falls Flowage 647
Johnson Falls Flowage 647, Wisconsin
145 acres
Surface Area
37 ft
Max Depth
9 ft
Average Depth
813 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Wisconsin
45.27 degrees N, 88.18 degrees W - Marinette County. State and county outlines drawn from Census boundary data; the lake marker is placed by its DNR coordinates, not by eye. Schematic - not a survey map.
Depth Profile - Johnson Falls Flowage 647
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map. The benchmark is the state itself: Wisconsin Lakes defines a shallow lake as under 20 ft at its deepest, with an average depth under 10 ft.
How Johnson Falls Flowage 647 Stacks Up
- About 155 miles from Milwaukee, as the crow flies.
- 4 fish species on the DNR list for this lake.
Fish Species
PanfishSmallmouth BassNorthern PikeWalleye
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID (WBIC)533300
CountyMarinette
Lake TypeDrainage
Coordinates45.2676, -88.1797
Deepest Natural Lakes in Wisconsin
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Green Lake | Green Lake | 7,920 acres | 236 ft |
| 2 | Geneva Lake | Walworth | 5,401 acres | 135 ft |
| 3 | Elkhart Lake | Sheboygan | 292 acres | 119 ft |
| 4 | Trout Lake | Vilas | 3,864 acres | 117 ft |
| 5 | Beaver Dam Lake | Barron | 1,163 acres | 106 ft |
Largest Lakes in Wisconsin
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Winnebago | Winnebago, Fond du Lac, Calumet | 131,939 acres | 21 ft |
| 2 | Lake Pepin | Pierce, Buffalo, Pepin | 24,550 acres | 60 ft |
| 3 | Petenwell Lake | Adams, Wood, Juneau | 23,173 acres | 44 ft |
| 4 | Lake Chippewa | Sawyer | 14,593 acres | 92 ft |
| 5 | Lake Poygan | Winnebago, Waushara | 14,024 acres | 11 ft |
Sources: Wisconsin DNR lake data (WBIC 533300); USGS; Wisconsin Lakes (shallow-lake benchmark). Verified October 28, 2026.