Cisco Lake is a productive, nutrient-rich eutrophic lake in Gogebic County, Michigan. Water quality is graded D based on 1 sampling years through 2022. Overall water quality is improving over recent sampling years. Compared to the 39 other monitored lakes in Gogebic County, Cisco Lake ranks #40 for water quality.
Source: EPA Water Quality Portal sampling records, Michigan DNR, last sampled 2022-09-16. Grade methodology: LakeGrade methodology.
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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 5 ft. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Cisco Lake
Compare lakeside cabins, hotels, and vacation rentals near Cisco Lake in Gogebic County, Michigan — 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.
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Fishing Cisco Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +5.63 m/yr | 2 |
Current Conditions
Latest reading Jul 6, 2026, 3:45 AM from USGS gauge 04037400. See live data ↗ — readings update every 15–60 minutes; this page refreshes on each build.
Location & Depth Map
Free interactive depth-contour map of Cisco Lake, reaching a maximum surveyed depth of 20 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
County Ranking
Ranked #40 of 40 lakes in Gogebic County
Nearby Lakes in Gogebic County
Explore Cisco Lake across LakeGrade
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High nutrients, frequent algae, reduced clarity
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More records, surveys & data sources
EPA Impairment Status
Cisco 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 MI040201020101-02 · Official waterbody report · Matched by proximity (0.24 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-16
Monitoring stations: 1