Little Webb Lake
Cass County, Minnesota226 acresView mapDirections
Minnesota PCA publishes the water-quality measurements for Little Webb Lake. Here is what has been measured.
- 37 ft max depth
- Public access
- Limited data
Little Webb Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 16.5 ft visibility. Maximum depth: 37 ft. Surface area: 226.04 acres.
Minnesota DNR's Targeted Survey on August 21, 2023 caught 0.11 walleye per trap net at Little Webb Lake. DNR survey details →
Little Webb Lake is a 226-acre lake in Cass County, Minnesota with a maximum depth of 37 feet. Overall water quality is improving over recent sampling years. The lake supports 13 documented fish species including black bullhead, black crappie, and bluegill. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-10-11. Methodology: how these readings are compared.
What Little Webb Lake is good for
From access and monitoring records, not editorial picks.
- Clear water16.5 ft of visibility
- Boat launch1 documented ramp
- Fishing13 species recorded
- Ice seasonIce-out around Apr 21
- Deep water37 ft surveyed max depth
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Little Webb Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Little Webb Lake
These are the measurements Minnesota PCA publishes for Little Webb Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 16.5 ft down. TSI 37.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 16.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 37 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Little Webb Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Little Webb Lake typically sits around 55°F at the surface in October. Summer average is about 70°F. Usually warmest in Aug (about 71°F) and coldest in Oct (about 55°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (55°F) to its warmest (71°F).
Typical surface water temperature by month, from 8 field readings (2022–2025) via the EPA Water Quality Portal. See the full Little Webb Lake water temperature breakdown →
Minnesota DNR's Targeted Survey on August 21, 2023 caught 0.11 walleye per trap net at Little Webb Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Little Webb Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
13 surveys on file from MN DNR Fisheries. Most recent: 2023-08-21 (Targeted Survey).
13 surveys on file · most recent 2023-08-21 (Targeted Survey)
| Species | Catch rate (CPUE) | Size | Avg weight |
|---|---|---|---|
| Bluegill | 29.81 | 3–8 in 2023-08-21 | 0.18 lb |
| Bluntnose Minnow | 11.41 | ||
| Northern Pike | 6.41 | 17–22 in 2023-08-21 | 1.73 lb |
| Yellow Bullhead | 4.89 | 8–11 in 2023-08-21 | 0.49 lb |
CPUE = catch per unit effort, fish caught per net per set in a standardised survey. It measures abundance, not size, and is not a weekly bite report.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Bluegill
Northern Pike
Yellow Bullhead
From the 2023-08-21 survey
A targeted survey of nearshore fish species in Little Webb Lake was conducted on August 21-22, 2023, by Index of Biological Integrity (IBI) Program staff. Sampling sites were evenly spaced around the lake, and each was sampled by backpack electrofishing and seining with a 50-foot or 15-foot seine, where possible.…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Little Webb Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Little WebbFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Little Webb (1483)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Little WebbFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — Little WebbPublic Water Access Sites · MN DNR LakeFinder
Lake Details
Max depth
37 ft
Surface area
226 acres
Shoreline
3.2 mi
Littoral zone
30%
Share shallower than 15 ft
Public access
Yes
Listed by Minnesota PCA
Lake Size & Watershed
Watershed (drainage) area
5 sq mi
HydroLAKES / HydroSHEDS
Elevation
1,345 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Little Webb LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Little Webb Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Webb Lake in Cass County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Little Webb Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Follow Little Webb Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Little Webb Lake
- → Little Webb Lake fishing: DNR survey catch rates, species & stocking
- → Little Webb Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Little Webb Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Little Webb Lake? (mercury & PFAS guide)
Water Quality Trend: Improving
Based on 4 years of monitoring (2020–2025).
Water clarity
Improving4 years
Ice season
Typical ice-out
Apr 21
Earliest Apr 7, 2017 · Latest May 5, 2008
Typical ice-in
Dec 1
Earliest Nov 10, 2017 · Latest Dec 1, 2007
Most recent ice-out
Apr 7
2017
8 observations · Minnesota PCA ice records
Nearby Lakes in Cass County
Frequently asked questions about Little Webb Lake
Where is Little Webb Lake?
- Little Webb Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Little Webb Lake?
- Little Webb Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Water clarity: 16.5 ft visibility. Maximum depth: 37 ft. Surface area: 226.04 acres.
Is Little Webb Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Little Webb Lake?
- Little Webb Lake typically sits around 55°F at the surface in October, from 8 EPA Water Quality Portal field readings (2022–2025). That is a typical value for the month, not a live reading.
How deep is Little Webb Lake?
- Little Webb Lake has a maximum depth of 37 feet. The lake covers 226.04 acres.
What fish are in Little Webb Lake?
- Fish species found in Little Webb Lake include black bullhead, black crappie, bluegill, brown bullhead, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, white sucker, yellow bullhead, yellow perch. Little Webb Lake is located in Cass County, Minnesota.
What did the DNR fisheries survey find at Little Webb Lake?
- Minnesota DNR's Targeted Survey on August 21, 2023 caught 0.11 walleye per trap net at Little Webb Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Little Webb Lake’s water-quality measurements separately, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
When does Little Webb Lake thaw?
- Little Webb Lake typically has ice-out around Apr 21. Ice typically forms around Dec 1. The open water season is approximately 224 days.
Are there boat ramps on Little Webb Lake?
- Little Webb Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Little Webb Lake. Public access is listed as yes.
Can I fish at Little Webb Lake?
- Little Webb Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Minnesota's fish and wildlife agency, so check its current regulations before you go.
Explore Little Webb Lake across LakeQuality
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Where this data comes from
12 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA12 samples · 2020–2025
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory
Ice data from Minnesota DNR Climate