Little Rock Lake
depth
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Depth scale
Survey readout
Little Rock Lake is mapped to a depth of 15 ft on the Minnesota DNR survey and covers about 1,306 acres in Benton County, Minnesota. Depths come from the Minnesota DNR survey of 1980.
Measured from the Minnesota DNR lake bathymetric contour survey.
- Deepest mapped contour
- 15 ft
- Survey year
- 1980
- Surface area
- 1,306 acres
- Shoreline
- 10.13 mi · irregular
- Aquatic vegetation
- 1% of surface · NDVI estimate
- Public access
- Trailer Launch · Little Rock Lake, Benton Beach Public Water Access Site · Minnesota DNR site · 3 more
Additional depth details3 contours
- Contour depths
- 0–15 ft
- Recorded point soundings
- 15 ft
Provenance
Sources: MN DNR Lake Bathymetric Contours, 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
- 45.72677, -94.16506
- MN DNR lake ID
- 05001300
- Basemap
- USDA NAIP · public domain
- Model size
- 2.3 MB
Paddling
Paddling Index methodology v1.0 · calculated 2026-09-25Little Rock Lake has a partly natural setting, moderate open-water exposure, substantial nearby higher-volume roads.
Why this score?5 components
Included in the index
| Component | Rating | Points of weight | Measurement |
|---|---|---|---|
| Natural setting | Good | 16.8 of 35 | 58% natural land cover within 150 m of shore (9% forest, 48% wetland; 26% developed) |
| Geometric wind exposure | Good | 9.4 of 29 | mean fetch 2,077 m · 1% of sampled water within 500 m of shelter · moderate open-water fetch |
| Motor & speed rules | Not modeled | — | Minnesota’s lake-by-lake motor, speed and no-wake rules are mostly county and city ordinances, not map data, so they are not part of the Minnesota index. Check local signage and ordinances before going out. |
| Public access | Excellent | 17.6 of 18 | 4 DNR public access sites · carry-in or canoe launch · boat ramp |
| Road isolation | Modest | 2.0 of 18 | substantial nearby higher-volume roads · 5 MnDOT-classified segments within 1.2 km, peak 28,344 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 1% 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 — 9% forest and 48% wetland cover within 150 m of shore
Compare Minnesota lakes by Paddling Index →
Fish you might catch
from DNR surveys10 species with recent evidence in this lake — sized relative to each other. Illustrations are AI-generated representative adults in everyday colors, not photographs (provenance).
Common Carp
Bigmouth Buffalo
White Sucker
Shorthead Redhorse
About these fish → the Fish of Minnesota guide
Fishery
surveyed 2025Gamefish Walleye 89 · Channel Catfish 74 · Northern Pike 50
Panfish Black Crappie 17 · Bluegill 3 · Yellow Perch 3
All survey species10 species
Gamefish
Panfish
Forage & nongame
Infested waters listing
listed via connectionMussels & snails
- Zebra MusselListed in 2006 because this water is connected to Mississippi River. The species has not necessarily been found in this lake.
What does the infested waters list mean?
The Minnesota DNR lists a lake, river, pond or wetland as infested when it contains an aquatic invasive species that could spread to other waters, or when it is connected to a water where one is present. Activities such as bait harvest and water use are managed differently on infested waters. Check the current list before moving water, bait or equipment.
Source: Minnesota Department of Natural Resources. List of Infested Waters, September 9, 2026. https://www.dnr.state.mn.us/invasives/ais/infested.html
Little Rock Lake — common questions
How deep is Little Rock Lake?
The deepest contour on the Minnesota DNR bathymetric survey of Little Rock Lake is 15 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 Little Rock Lake?
Little Rock Lake covers about 1,306 acres in Benton County, Minnesota.
What fish are in Little Rock Lake?
Species with survey, catch or recent-stocking evidence include channel catfish, northern pike, walleye, black crappie, bluegill, yellow perch. The page lists all 10 species and the evidence behind each.
Is there public access to Little Rock Lake?
Yes. The Minnesota DNR lists 4 public access sites on Little Rock Lake: Little Rock Lake, Benton Beach Public Water Access Site (boat ramp); Little Rock Lake, Hwy 10 Public Water Access Site (boat ramp); Little Rock Lake (NW) Public Water Access Site (carry-in launch); Little Rock Lake, Rose Anna Beach Public Water Access Site (carry-in launch).
