Indiana Lake Depths
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Schlamm Lake

Clark County, Indiana · IN DNR bathymetric survey
21ft Max
depth
19 acres 11 contours Public access 99% weedy
Paddling Index82Very Goodelectric motors only · sheltered geometry · wooded shoreline
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Depth scale

The lake

Survey readout

Schlamm Lake is mapped to a depth of 21 ft on the Indiana DNR survey and covers about 19 acres in Clark County, Indiana. Depths come from the Indiana DNR survey of 2017.

Measured from the Indiana DNR lake bathymetry survey.

Deepest mapped contour
21 ft
Survey year
2017
Surface area
19 acres
Shoreline
1.37 mi · irregular
Aquatic vegetation
99% of surface · NDVI estimate
Public access
Boat Ramp · Indiana DNR site
Additional depth details11 contours
Contour depths
0–21 ft
Recorded point soundings
21 ft
Compare with another lake
Location
Deam LakeSchlamm Lake (this lake)
Clark County, Indiana · all 2 lakes · tap a dot for that lake
Chart data

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
38.56711, -85.78531
IN DNR lake ID
96565971
Vertical exaggeration
2.97× below the waterline; land at true scale
Basemap
USDA NAIP · public domain
Model size
1.4 MB

Paddling

Paddling Index methodology v1.0 · calculated 2026-09-21
82 / 100Very GoodData confidence: High

Schlamm Lake has a heavily wooded and largely undeveloped setting, well sheltered geometry, nearby higher-volume roads. Watercraft controls: Electric motors only.

Why this score?5 components

Included in the index

ComponentRatingPoints of weightMeasurement
Natural settingExcellent25.4 of 3088% natural land cover within 150 m of shore (88% forest, 0% wetland; 11% developed)
Geometric wind exposureExcellent25.0 of 25mean fetch 320 m · 96% of sampled water within 500 m of shelter · short fetch in most directions
Watercraft controlsElectric motors only14.2 of 15Electric motors only
Public accessGood12.8 of 151 DNR fishing access site · boat ramp
Road isolationMixed4.3 of 15nearby higher-volume roads · 5 INDOT-classified segments within 1.2 km, peak 40,784 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
High — narrow throughout — passing wakes would reach most of the water
Aquatic vegetation
High — approximately 99% 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
High — 88% forest and 0% wetland cover within 150 m of shore
How this index is calculated. The Paddling Index is a relative composite derived from lake geometry and public environmental, access, roadway and watercraft-control data. It is not a user review, a safety rating, or a prediction of an individual outing. Differences of a few points should not be treated as meaningful — an 84 and an 82 are broadly comparable. Components and weights: natural setting 30%, geometric wind exposure 25%, watercraft controls 15%, public access 15%, road isolation 15%; observed motorboat activity is weighted 0% because no defensible lake-level measurement exists. Where a component has no data the remaining weights are renormalized and the confidence rating is lowered; below Medium confidence no number is shown. Sources: USGS NHD waterbody outline, USGS/MRLC NLCD Land Cover (2021), IN DNR Fishing Access Sites (motor restrictions) (2026-08), IN DNR Fishing Access Sites (2026-08) and INDOT Annual Average Daily Traffic (2021). Conditions change quickly — check current weather and local conditions before going out.

Fish you might catch

from DNR surveys

5 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colors, not photographs (provenance).

Fishing rules for this lake Beta

Size and daily limits for the 5 species found here — 5 open to harvest.

These are hook-and-line size and daily limit rules. The fishing code sets no closed season for these species on inland lakes, but posted property rules can close a water — see the notes. Gear, spearing and bow fishing, netting and bait collection are set by other sections of 312 IAC 9 and are not shown here.

Black CrappieOpen to harvestMinimum size: no size limit · Daily limit: 25 (312 IAC 9-7-14(a)) Black and white crappie together.
BluegillOpen to harvestMinimum size: no size limit · Daily limit: no limit (312 IAC 9-7-14(d) · “Bluegill”)
Beta. This panel is newly published. Every value is transcribed from the Indiana Administrative Code (312 IAC 9-7) and checked against the Indiana DNR's 2026-27 Fishing Regulations Guide, but the coverage and wording are still under review. If anything here disagrees with 312 IAC 9-7 or the Indiana DNR's guide, the DNR is right — the Administrative Code is the legal text; the guide summarizes it.
No closed season in the fishing code: 312 IAC 9-7 sets no season for these species on inland lakes (trout and salmon “at any time of year”, 9-7-13(d)(1)). Posted property rules can still close a water or bar entry (312 IAC 8-2-1) and 312 IAC 9-6-6 closes a few named areas, so check the property before you go. The possession limit is twice the daily bag limit (312 IAC 9-1-12.1); fish already processed and stored at your primary residence do not count toward it (312 IAC 9-2-8(d)).
Black CrappieOpen to harvestMinimum size: no size limit · Daily limit: 25 (312 IAC 9-7-14(a)) Black and white crappie together.
BluegillOpen to harvestMinimum size: no size limit · Daily limit: no limit (312 IAC 9-7-14(d) · “Bluegill”)
Channel CatfishOpen to harvestMinimum size: no size limit · Daily limit: 10 (312 IAC 9-7-3(b), (d)) The 10 is catfish in aggregate of any size from a lake or reservoir. Of those, not more than one channel catfish 28 inches or longer, one blue catfish 35 inches or longer and one flathead catfish 35 inches or longer per day.
Largemouth BassOpen to harvestMinimum size: 14" · Daily limit: 5 (312 IAC 9-7-6(a), (c)(3)) The 5 is black bass in aggregate — any combination of largemouth, smallmouth and spotted bass — not 5 of each.
Redear SunfishOpen to harvestMinimum size: no size limit · Daily limit: 25 (312 IAC 9-7-14(c))

From 312 IAC 9-7 (Sport fishing), Indiana Administrative Code (readopted 2025-03-25), and the 2026-2027 Indiana Fishing Regulations Guide · verified 2026-09-15. Regulations can change — the Indiana Administrative Code (312 IAC 9-7) is the controlling source; verify current regulations before fishing. Official regulations

Compiled from Indiana DNR fishery surveys. Silhouettes are stylized and scaled to typical adult sizes relative to one another. Presence is not a promise — fishing isn’t a sure thing.

Fishery

surveyed 2022
245Fish sampled
5Species

Gamefish

Largemouth Bass20 caught · to 14″
Channel Catfish7 caught · to 14″

Panfish

Bluegill178 caught · to 7″
Redear Sunfish28 caught · to 7″
Black Crappie12 caught · to 11″
Length is the largest fish netted in the survey, not an angler record. Source: Indiana DNR fish survey (Indiana Data Hub) (counts summed across survey years).

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.

Quick answers

Schlamm Lake — common questions

How deep is Schlamm Lake?

The deepest contour on the Indiana DNR bathymetric survey of Schlamm Lake is 21 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 Schlamm Lake?

Schlamm Lake covers about 19 acres in Clark County, Indiana.

What fish are in Schlamm Lake?

Species with survey, catch or recent-stocking evidence include channel catfish, largemouth bass, black crappie, bluegill, redear sunfish. The page shows the evidence behind each.

Is there public access to Schlamm Lake?

Yes. The Indiana DNR lists a public access site on Schlamm Lake: a boat ramp. The DNR notes that a lake permit is required. DNR directions: "Clark State Forest."

More lakes in Clark County