Lake Monona
Lake Monona in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 3360 acres.
- Area
- 3,360 acres
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Why Lake Monona has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Monona, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Monona is a 3,360-acre lake in Dane County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Monona water quality
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Monona
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Lake Monona
Compare lakeside cabins, hotels, and vacation rentals near Lake Monona in Dane County, Wisconsin — 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.
Top-rated places to stay near Lake Monona
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 3,360 acres |
No bathymetric survey has been published for Lake Monona, so its depth is not documented here.
Fishing Lake Monona
Nearby Lakes in Dane County
Frequently asked questions about Lake Monona
Where is Lake Monona?
- Lake Monona is a lake in Dane County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Monona?
- Lake Monona in Dane County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 3360 acres.
Is Lake Monona safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Monona is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Lake Monona come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.