Moody Lake
Oconto County, WisconsinMesotrophic
Moody Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. High phosphorus is the leading drag on the score — likely from upland agriculture, lawn runoff, or in-lake sediment release.
Mesotrophic conditions dominate at Moody Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. 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. Moody Lake ranks 60 of 66 in Oconto County — at the lower end of the locally monitored distribution.
No invasive species are currently listed at Moody Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Moody Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-08-23. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Crystal clear, you can see 16.4 ft down. Phosphorus level: 44.1 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.4 ft | A |
| Phosphorus | 44.1 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.033 m/yr | 5 |
| Phosphorus | ↑ Improving | -0.41 µg/L/yr | 6 |
Location
County Ranking
Ranked #60 of 66 lakes in Oconto County
Cleaner Lakes Within 30 Miles
Moody Lake holds Grade B. 5 nearby lakes hold higher grades.
- AAnderson LakeOconto County · 0.3 mi · Higher grade (B → A)
- AGreen LakeOconto County · 3.9 mi · Higher grade (B → A)
- ABear Paw LakeOconto County · 5.2 mi · Higher grade (B → A)
- AShay LakeOconto County · 7.4 mi · Higher grade (B → A)
- AChute Pond atOconto County · 1.5 mi · Higher grade (B → A)
Nearby Lakes in Oconto County
More Wisconsin Lake Rankings
State Parks Near Moody Lake
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-08-23
Monitoring stations: 1