Upper Fish Lake
depth
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Depth scale
Survey readout
Upper Fish Lake is mapped to a depth of 23 ft on the Indiana DNR survey and covers about 266 acres in LaPorte County, Indiana. Depths come from the Indiana DNR survey of 2015.
Measured from the Indiana DNR lake bathymetry survey.
- Deepest mapped contour
- 23 ft
- Survey year
- 2015
- Surface area
- 266 acres
- Shoreline
- 6.48 mi · irregular
- Aquatic vegetation
- 14% of surface · NDVI estimate
- Public access
- Boat Ramp · Upper/Lower Fish Lake · Indiana DNR site
Additional depth details4 contours
- Contour depths
- 0–23 ft
- Recorded point soundings
- 23 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
- 41.56541, -86.54541
- IN DNR lake ID
- 123165868
- Vertical exaggeration
- 2.9×
- Basemap
- USDA NAIP · public domain
- Model size
- 2.1 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-10-08Upper Fish Lake has a substantially developed setting, generally sheltered geometry, nearby higher-volume roads. No special watercraft restriction is identified in the current source.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Modest | 5.8 of 30 | 42% natural land cover within 150 m of shore (5% forest, 31% wetland; 51% developed) |
| Geometric wind exposure | Very Good | 17.4 of 25 | mean fetch 848 m · 5% of sampled water within 500 m of shelter · generally short fetch |
| Watercraft controls | None identified | 7.5 of 15 | No special watercraft restriction identified in the current DNR source. Motors permitted, subject to general law. |
| Public access | Good | 12.8 of 15 | 1 DNR fishing access site · boat ramp · fishing pier |
| Road isolation | Mixed | 4.4 of 15 | nearby higher-volume roads · 10 INDOT-classified segments within 1.2 km, peak 2,125 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
- Low — wide enough that wakes disperse over most 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
- Moderate — 5% forest and 31% wetland cover within 150 m of shore
Compare Indiana lakes by Paddling Index →
Upper Fish Lake — common questions
How deep is Upper Fish Lake?
The deepest contour on the Indiana DNR bathymetric survey of Upper Fish Lake is 23 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 Upper Fish Lake?
Upper Fish Lake covers about 266 acres in LaPorte County, Indiana.
Is there public access to Upper Fish Lake?
Yes. The Indiana DNR lists a public access site on Upper Fish Lake: a boat ramp with a fishing pier, a boat dock and restrooms. The DNR records no fee. DNR directions: "Off SR 4, 3.5 miles east of SR 104."
