Wyona Lake
Wyona Lake in Columbia County, Wisconsin has a water quality grade of D (Nutrient-rich). Phosphorus: 86.1 µg/L. Maximum depth: 12 ft. Surface area: 96 acres.
- Max depth
- 12 ft
- Area
- 96 acres
- Type
- Eutrophic
- Trend
- ↑ Improving
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Wyona Lake →
Next lake in Columbia County
Wyona Lake is a 96-acre productive, nutrient-rich eutrophic lake in Columbia County, Wisconsin with a maximum depth of 12 feet. Water quality is graded D based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 5 other monitored lakes in Columbia County, Wyona Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-09-10. Grade methodology: LakeGrade methodology.
Watch Wyona Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 86.1 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 86.1 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Wyona Lake
Compare lakeside cabins, hotels, and vacation rentals near Wyona Lake in Columbia 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Wyona Lake are listed below.
Top-rated places to stay near Wyona Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 ft |
| Surface Area | 96 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Wyona County ParkPublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Wyona Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 4 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -195.4 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Wyona Lake is a man-made reservoir impounded by the Wyocena (completed 1849), built primarily for recreation on the DUCK CR; gravity-type dam, 14 ft tall and 700 ft long.
- Surface area
- 93 ac
- Normal storage
- 309 ac-ft
- Max storage
- 500 ac-ft
- Drainage area
- 75 sq mi
- Hazard class
- Low
- Owner
- Village Of Wyocena
Source: USACE National Inventory of Dams, NID ID WI00248 · Operator website
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Wyona Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Grande Cheese Co WyocenaWyocena · 0.3 mi away · NPDES WI0051764Recent violation
- Rio Wastewater Treatment FacilityRio · 4.8 mi away · NPDES WI0020117Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #6 of 6 lakes in Columbia County
Nearby Lakes in Columbia County
Frequently asked questions about Wyona Lake
What is the water quality grade for Wyona Lake?
- Wyona Lake in Columbia County, Wisconsin has a water quality grade of D (Nutrient-rich). Phosphorus: 86.1 µg/L. Maximum depth: 12 ft. Surface area: 96 acres.
Is Wyona Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Wyona Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
How deep is Wyona Lake?
- Wyona Lake has a maximum depth of 12 feet. The lake covers 96 acres.
What fish are in Wyona Lake?
- Fish species found in Wyona Lake include Panfish, Largemouth Bass, Northern Pike. Wyona Lake is located in Columbia County, Wisconsin.
Are there boat ramps on Wyona Lake?
- Wyona Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Wyona County Park. Public access is listed as yes.
Explore Wyona Lake across LakeGrade
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Columbia County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Madison Area Lakes area
Where to stay at Wisconsin's top lakes, each with its grade
Lakes in the Wisconsin River Watershed, ranked by water quality
High nutrients, frequent algae, reduced clarity
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
State Parks Near Wyona Lake
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
6 measurements from 1 monitoring station, 2024–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX6 samples · 2024–2025
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory