Avoca Lake
Iowa County, Wisconsin63 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Avoca Lake. Here is what has been measured.
- Eutrophic
- Zebra Mussel
- 10 ft max depth
- Public access
- Limited data
Avoca Lake in Iowa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 80.5 µg/L. Maximum depth: 10 ft. Surface area: 63 acres.
Wisconsin DNR lists Panfish as common on Avoca Lake. DNR survey details →
Avoca Lake is a 63-acre productive, nutrient-rich eutrophic lake in Iowa County, Wisconsin with a maximum depth of 10 feet. The lake supports 4 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 Iowa County, Avoca Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-10-28. Methodology: how these readings are compared.
What Avoca Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing4 species recorded
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Avoca Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Avoca Lake
These are the measurements Wisconsin DNR publishes for Avoca Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2 ft of visibility. Phosphorus 80.5 µg/L. TSI 67.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 80.5µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 67 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Avoca Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Avoca Lake typically sits around 52°F at the surface in October. Summer average is about 76°F. Usually warmest in Aug (about 77°F) and coldest in Oct (about 52°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (52°F) to its warmest (77°F).
Typical surface water temperature by month, from 16 field readings (2024–2024) via the EPA Water Quality Portal. See the full Avoca Lake water temperature breakdown →
Wisconsin DNR lists Panfish as common on Avoca Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Avoca Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2005).
Fish Species (DNR-rated)
Lake Details
Max depth
10 ft
Surface area
63 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Avoca LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Avoca Lake
Compare lakeside cabins, hotels, and vacation rentals near Avoca Lake in Iowa 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Avoca Lake are listed below.
Top-rated places to stay near Avoca Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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 →
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Fish Species
Click a species to see every lake where it is documented.
Fishing Avoca 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.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Avoca Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Avoca Wastewater Treatment FacilityAvoca · 1 mi away · NPDES WI0060151Recent violation
- Schmidt Farms West LlcBuena Vista, Town Of · 3 mi away · NPDES WI0066010
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.
Nearby Lakes in Iowa County
Frequently asked questions about Avoca Lake
Where is Avoca Lake?
- Avoca Lake is a lake in Iowa County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Avoca Lake?
- Avoca Lake in Iowa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 2 ft visibility. Phosphorus: 80.5 µg/L. Maximum depth: 10 ft. Surface area: 63 acres.
Is Avoca Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Avoca Lake?
- Avoca Lake typically sits around 52°F at the surface in October, from 16 EPA Water Quality Portal field readings (2024–2024). That is a typical value for the month, not a live reading.
How deep is Avoca Lake?
- Avoca Lake has a maximum depth of 10 feet. The lake covers 63 acres.
What fish are in Avoca Lake?
- Fish species found in Avoca Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Avoca Lake is located in Iowa County, Wisconsin.
What did the DNR fisheries survey find at Avoca Lake?
- Wisconsin DNR lists Panfish as common on Avoca Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Avoca Lake’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Avoca Lake?
- Avoca Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Avoca Lake. Public access is listed as yes.
Can I fish at Avoca Lake?
- Avoca Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Avoca Lake across LakeQuality
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Where this data comes from
11 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX11 samples · 2024
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory