Ferdinand Old Lake
depth
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Depth scale
Survey readout
Ferdinand Old Lake is mapped to a depth of 18 ft on the Indiana DNR survey and covers about 15 acres in Dubois County, Indiana. Depths come from the Indiana DNR survey of 2017.
Measured from the Indiana DNR lake bathymetry survey.
- Deepest mapped contour
- 18 ft
- Survey year
- 2017
- Surface area
- 15 acres
- Shoreline
- 0.93 mi · irregular
- Aquatic vegetation
- 14% of surface · NDVI estimate
- Public access
- Boat Ramp · Old Ferdinand Lake · Indiana DNR site
Additional depth details9 contours
- Contour depths
- 0–18 ft
- Recorded point soundings
- 18 ft
Provenance
Sources: IN DNR Lake Bathymetry, USGS 3DEP, USDA NAIP (public domain), OpenStreetMap (ODbL).
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Map details & sources4 sources
All layers registered to one bounding box; positions in WGS 84.
Survey-derived depth contours drape over USGS 3DEP elevation, with a USDA NAIP aerial basemap and OpenStreetMap shoreline. Color shows surveyed depth; dark lines are the survey's own isobaths.
- Coordinates
- 38.22478, -86.84676
- IN DNR lake ID
- 62691603
- Vertical exaggeration
- 3.0× below the waterline; land at true scale
- Basemap
- USDA NAIP · public domain
- Model size
- 0.7 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-09-21Ferdinand Old Lake has a mixed natural and developed setting, well sheltered geometry, limited nearby major-road exposure. Watercraft controls: Electric motors only.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Mixed | 10.5 of 30 | 37% natural land cover within 150 m of shore (36% forest, 1% wetland; 7% developed) |
| Geometric wind exposure | Excellent | 25.0 of 25 | mean fetch 272 m · 100% of sampled water within 500 m of shelter · short fetch in most directions |
| Watercraft controls | Electric motors only | 14.2 of 15 | Electric motors only |
| Public access | Good | 12.8 of 15 | 1 DNR fishing access site · boat ramp |
| Road isolation | Very Good | 9.4 of 15 | limited nearby major-road exposure · 13 INDOT-classified segments within 1.2 km, peak 10,635 vehicles/day |
Additional paddling considerations
These describe the lake but are not part of the v1 Paddling Index and do not change the number above.
- Wake sensitivity
- Moderate — narrow in places — wakes would carry across parts of the lake
- Aquatic vegetation
- Low — approximately 14% mapped coverage · NAIP aerial imagery (NDVI)
- Observed motorized activity
- Unknown — No lake-level measurement of boat traffic is available. Legal permission to operate motors is not evidence of use.
- Wildlife habitat potential
- Limited — 36% forest and 1% wetland cover within 150 m of shore
Compare Indiana lakes by Paddling Index →
Non-native species records
No non-native species recorded in the available dataset. This does not confirm that no non-native species are present.
Source: Midwest Glacial Lakes Partnership Conservation Planner; underlying nonindigenous species records from the USGS Nonindigenous Aquatic Species database.
Ferdinand Old Lake — common questions
How deep is Ferdinand Old Lake?
The deepest contour on the Indiana DNR bathymetric survey of Ferdinand Old Lake is 18 ft. That is the deepest depth the historical survey map records, which may differ from the deepest point of the lake itself.
How big is Ferdinand Old Lake?
Ferdinand Old Lake covers about 15 acres in Dubois County, Indiana.
Is there public access to Ferdinand Old Lake?
Yes. The Indiana DNR lists a public access site on Ferdinand Old Lake: a boat ramp. The DNR records no fee. DNR directions: "East of Ferdinand on Convent Rd."
