Smetana Lake
Hennepin County, MinnesotaEutrophic
Smetana Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Minnesota norms.
At a TSI of 51, Smetana Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. A maximum depth of just 12 ft means sediment-bound phosphorus releases back into the water column whenever wind stirs the bottom — a classic shallow-lake dynamic. The lake is compact at 52 acres, with 1.6 miles of shoreline and little volume to buffer nutrient inputs. Within Hennepin County's 104 graded waters, Smetana Lake sits at rank 21, near the top of the local distribution.
Eurasian watermilfoil has been documented at Smetana Lake, requiring shoreline management to keep dense mats from crowding native vegetation. The fishery is bass-led, with 13 documented species across the lake's records. The lake lacks a documented public access point, so visitor use is limited. 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 2024-10-19. Grade methodology: LakeGrade methodology.
Watch Smetana Lake water quality
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.6 ft. Phosphorus level: 34 µg/L. Chlorophyll-a: 6.4 µg/L. Trophic State Index: 51.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.6 ft | D |
| Phosphorus | 34 µg/L | C |
| Chlorophyll-a (Algae) | 6.4 µg/L | B |
| Trophic State Index (TSI) | 51 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 ft |
| Average Depth | 5 ft |
| Surface Area | 52.23 acres |
| Shoreline Length | 1.6 mi |
| Littoral Zone | 100% |
| Public Access | No |
Fish Species
Click a species to see every graded lake where it is documented.
→ Best fishing times for Smetana Lake (14-day solunar calendar)
→ Is it safe to eat fish from Smetana Lake? (mercury & PFAS guide)
→ Smetana Lake fishing regulations (limits, seasons, special rules)
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: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.067 m/yr | 6 |
| Phosphorus | ↓ Declining | +1.07 µg/L/yr | 6 |
Location
County Ranking
Ranked #21 of 104 lakes in Hennepin County
Cleaner Lakes Within 30 Miles
Smetana Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Smetana Lake
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
EPA Impairment Status
Smetana 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 MN27-0073-00 · 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
Lake details from Minnesota DNR LakeFinder
Most recent sample: 2024-10-19
Monitoring stations: 1