Boundary Lake
Oconto County, Wisconsin36 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Boundary Lake. Here is what has been measured.
- Oligotrophic
- 19 ft max depth
- Public access
- Limited data
Boundary Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14 ft visibility. Phosphorus: 12.1 µg/L. Maximum depth: 19 ft. Surface area: 36 acres.
Wisconsin DNR rates Panfish as abundant on Boundary Lake. DNR survey details →
Boundary Lake is a 36-acre cold, clear oligotrophic lake in Oconto County, Wisconsin with a maximum depth of 19 feet. Overall water quality is improving over recent sampling years. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 1 public boat landing. Compared to the 38 other monitored lakes in Oconto County, Boundary Lake ranks #30 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-09-10. Methodology: how these readings are compared.
Boundary Lake covers about 36 acres in Oconto County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Boundary Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Boundary Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14 ft of visibility
- 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 Boundary 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 Boundary Lake
These are the measurements Wisconsin DNR publishes for Boundary Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14 ft. Phosphorus 12.1 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 12.1µg/L | Good 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. | 40 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Boundary Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Boundary Lake typically sits around 68°F at the surface in September. Summer average is about 79°F. Usually warmest in Jul (about 82°F) and coldest in May (about 67°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (67°F) to its warmest (82°F).
Typical surface water temperature by month, from 16 field readings (2024–2024) via the EPA Water Quality Portal. See the full Boundary Lake water temperature breakdown →
Wisconsin DNR rates Panfish as abundant on Boundary Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Boundary Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. 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 2024).
Fish Species (DNR-rated)
Lake Details
Max depth
19 ft
Surface area
36 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Boundary 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 Boundary Lake
Compare lakeside cabins, hotels, and vacation rentals near Boundary Lake in Oconto 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 Boundary Lake
Prices for Oct 16–18, 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 →
Follow Boundary Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Boundary 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.
Water quality readings over time
2 seasons of samples on record (2023–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Nearby Lakes in Oconto County
Frequently asked questions about Boundary Lake
Where is Boundary Lake?
- Boundary Lake is a lake in Oconto County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Boundary Lake?
- Boundary Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 14 ft visibility. Phosphorus: 12.1 µg/L. Maximum depth: 19 ft. Surface area: 36 acres.
Is Boundary 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 Boundary Lake?
- Boundary Lake typically sits around 68°F at the surface in September, 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 Boundary Lake?
- Boundary Lake has a maximum depth of 19 feet. The lake covers 36 acres.
What fish are in Boundary Lake?
- Fish species found in Boundary Lake include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike. Boundary Lake is located in Oconto County, Wisconsin.
What did the DNR fisheries survey find at Boundary Lake?
- Wisconsin DNR rates Panfish as abundant on Boundary Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Boundary Lake’s water-quality measurements separately, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Boundary Lake?
- Boundary Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Boundary Lake. Public access is listed as yes.
Can I fish at Boundary Lake?
- Boundary 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 Boundary Lake across LakeQuality
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Species activity outlook by water temperature and season
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Where this data comes from
37 measurements from 1 monitoring station, 2023–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX37 samples · 2023–2024
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
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory