Little Falls Lake
Little Falls Lake in St. Croix County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 170 acres.
- Area
- 170 acres
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Why Little Falls Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Little Falls Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Little Falls Lake is a 170-acre lake in St. Croix County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Little Falls Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Little Falls Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Falls Lake in St. Croix County, Wisconsin — 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 Falls Lake
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DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Little Falls Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2025Little Falls Lake spring shocking survey, 2025Spring Shocking Survey · WI DNR · 2025 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 170 acres |
No bathymetric survey has been published for Little Falls Lake, so its depth is not documented here.
Recreation & Access
- Little Falls FlowagePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Little Falls Lake
Nearby Lakes in St. Croix County
Frequently asked questions about Little Falls Lake
Where is Little Falls Lake?
- Little Falls Lake is a lake in St. Croix County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Little Falls Lake?
- Little Falls Lake in St. Croix County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 170 acres.
Is Little Falls Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Little Falls Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Little Falls Lake?
- Little Falls Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Little Falls Flowage.
Explore Little Falls Lake across LakeQuality
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Where this data comes from
Measurements for Little Falls Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory