Cook County, Minnesota · Water Quality Report Card
Teal Lake Landing
Teal Lake Landing in Cook County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar.
- Mean depth
- ~16 ft est.
- Trend
- → Stable
- Public access
- Yes
Teal Lake Landing is a lake in Cook County, Minnesota with an estimated average depth of about 16 feet. Phosphorus level is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2022-09-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data |
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~16 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Minnesota has not published bathymetry for Teal Lake Landing.
Where to stay near Teal Lake Landing
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Fishing Teal Lake Landing
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +1.8 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -4.05 µg/L/yr | 2 |
Location
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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.
Where this data comes from
9 measurements from 2 monitoring stations, 2020–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Grand Portage Reservation
GPC5_WQX5 samples · 2022 - 21GPBCH - Grand Portage Beaches (Tribal)
21GPBCH4 samples · 2020
Analytical methods
- Turbidity by Nephelometry
Monitoring station identifiers (2)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2022-09-20
Monitoring stations: 2