Round Lake
Price County, WisconsinMesotrophic
Round Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
A TSI near 47 places Round Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake bottoms out at 24 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 748 acres, Round Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Among the 26 graded lakes in Price County, Round Lake sits at rank 10, above the county median.
An invasive species record — Chinese Mystery Snail — has been logged at Round Lake; Wisconsin DNR maintains the official infested-waters list. Walleye are documented at Round Lake, one of 6 fish species on record for the lake. A documented public access point at Round Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-19. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 11.5 ft. Phosphorus level: 27.2 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11.5 ft | B |
| Phosphorus | 27.2 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 24 ft |
| Surface Area | 748 acres |
| Public Access | Yes |
Fish Species
Click a species to see all Wisconsin and Minnesota lakes where it is found.
→ Best fishing times for Round Lake (14-day solunar calendar)
→ Is it safe to eat fish from Round Lake? (mercury & PFAS guide)
→ Round Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.043 m/yr | 6 |
| Phosphorus | ↑ Improving | -2.07 µg/L/yr | 6 |
Recreation & Access
Location
County Ranking
Ranked #10 of 26 lakes in Price County
Cleaner Lakes Within 30 Miles
Round Lake holds Grade B. 2 nearby lakes hold higher grades.
- ACochran LakePrice County · 3.6 mi · Higher grade (B → A)
- ANewman LakePrice County · 5 mi · Higher grade (B → A)
Nearby Lakes in Price County
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1999. 2 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Fish and recreation data from Wisconsin DNR Lakes
Most recent sample: 2025-08-19
Monitoring stations: 1