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LakeQuality

Sagamore Lake vs Seven Hills Lake

Water quality, depth, fish species, and recreation comparison.

Sagamore Lake and Seven Hills Lake both received the same overall water quality grade of D (Poor). Both are in Putnam County, Wisconsin.

Sagamore Lake and Seven Hills Lake are both in New York — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. These two are within a letter of each other on the rubric — Sagamore Lake (D) versus Seven Hills Lake (D). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.

D

Sagamore Lake

Putnam County, Wisconsin

Murky, only visible to about 5 ft.

D

Seven Hills Lake

Putnam County, Wisconsin

Murky, only visible to about 4.8 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricSagamore LakeSeven Hills Lake
Overall GradeD (Poor)D (Poor)
Water Clarity5 ft4.8 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area96 acres56 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophiceutrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Both lakes earn the same Grade D. The tiebreakers come down to clarity (Sagamore Lake: 5 ft, Seven Hills Lake: 4.8 ft) and what you want from the lake. Sagamore Lake matches its peer on species count.