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LakeQuality

Lake Springfield vs Palmyra-Modesto Lake

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

Palmyra-Modesto Lake has a higher water quality grade (C, Fair) than Lake Springfield (F, Very Poor). Both are in Wisconsin.

Both Lake Springfield and Palmyra-Modesto Lake sit in Illinois. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are meaningfully apart: Palmyra-Modesto Lake grades a C while Lake Springfield grades a F. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.

For a recreational visitor, the wider grade gap is decisive — Palmyra-Modesto Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

F

Lake Springfield

Sangamon County, Wisconsin

Very murky, less than 1.5 ft of visibility.

C

Palmyra-Modesto Lake

Macoupin County, Wisconsin

No clarity data.

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.

MetricLake SpringfieldPalmyra-Modesto Lake
Overall GradeF (Very Poor)C (Fair)
Water Clarity1.5 ftNo data
PhosphorusNo data56 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area4.2K acres37 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statehypereutrophiceutrophic

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

Verdict

Palmyra-Modesto Lake wins on overall water quality with a Grade C versus Lake Springfield's Grade F. For fishing diversity, Palmyra-Modesto Lake also leads with 0 species.