Lower Twin Lake
Lower Twin Lake in Freeborn County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.8 ft visibility.
- Clarity
- 1.8 ft
- Mean depth
- ~7 ft est.
- Public access
- Yes
Next lake in Freeborn County
Why Lower Twin Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Lower Twin Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
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 MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lower Twin Lake is a lake in Freeborn County, Minnesota with an estimated average depth of about 7 feet. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-08-01. Grade methodology: LakeGrade methodology.
Watch Lower Twin Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lower Twin Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 1.8 ft of visibility. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lower Twin Lake
Compare lakeside cabins, hotels, and vacation rentals near Lower Twin Lake in Freeborn 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 Lower Twin Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Minnesota’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~7 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Minnesota has not published bathymetry for Lower Twin Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Lower Twin Lake
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Lower Twin Lake. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Public Water Access Sites — Lower TwinPublic Water Access Sites · MN DNR LakeFinder
Graded lakes near Lower Twin Lake
Lower Twin Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Freeborn County
Frequently asked questions about Lower Twin Lake
What is the water quality grade for Lower Twin Lake?
- Lower Twin Lake in Freeborn County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 1.8 ft visibility.
Is Lower Twin Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lower Twin Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Lower Twin Lake?
- No published bathymetric survey covers Lower Twin Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 7 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Lower Twin Lake across LakeGrade
Fish species and top-graded lakes across Minnesota
Fish species and best lakes in Freeborn County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its grade
Minnesota's cleanest and most-polluted lakes, ranked
More Minnesota Lake Rankings
State Parks Near Lower Twin Lake
Other Lakes in Minnesota
Eutrophic Lakes in Minnesota
Where this data comes from
1 measurement from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Department of Agriculture - Pesticide Monitoring
MNDA_PESTICIDE1 sample · 2022
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder