George Watch Lake
Anoka County, MinnesotaEutrophic
On the scoring rubric George Watch Lake grades a D: clarity at 3.4 ft and 270 µg/L of phosphorus keep it in the lower bracket for Anoka County. High phosphorus is the leading drag on the score — likely from upland agriculture, lawn runoff, or in-lake sediment release.
Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within Anoka County's 26 graded lakes, George Watch Lake ranks 19 — below the local median, though not at the bottom.
George Watch Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The state fisheries records do not list documented species for George Watch Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at George Watch Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Multiple sampling years from Minnesota PCA volunteers and partner agencies back the grade, so the letter should hold steady absent a major watershed shift.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-06-07. Grade methodology: LakeGrade methodology.
Watch George Watch Lake water quality
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 3.4 ft. Phosphorus level: 270 µg/L. Chlorophyll-a: 13 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | 270 µg/L | F |
| Chlorophyll-a (Algae) | 13 µg/L | C |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.186 m/yr | 5 |
Location
County Ranking
Ranked #19 of 26 lakes in Anoka County
Cleaner Lakes Within 30 Miles
George Watch Lake holds Grade D. 2 nearby lakes hold higher grades.
- CAmelia LakeAnoka County · mi · Higher grade (D → C)
- CGolden LakeAnoka County · mi · Higher grade (D → C)
Nearby Lakes in Anoka County
More Minnesota Lake Rankings
State Parks Near George Watch Lake
Other Grade D Lakes in Minnesota
Eutrophic Lakes in Minnesota
EPA Impairment Status
George Watch Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN02-0005-00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-06-07
Monitoring stations: 1