Alexander Lake
Lincoln County, Wisconsin618 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Alexander Lake. Here is what has been measured.
- Eutrophic
- 3 aquatic invasives
- 36 ft max depth
- Public access
- Limited data
Alexander Lake in Lincoln County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4 ft visibility. Phosphorus: 46.2 µg/L. Maximum depth: 36 ft. Surface area: 618 acres.
Wisconsin DNR lists Largemouth Bass as common on Alexander Lake. DNR survey details →
Alexander Lake is a 618-acre productive, nutrient-rich eutrophic lake in Lincoln County, Wisconsin with a maximum depth of 36 feet. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available with 2 public boat landings. Compared to the 12 other monitored lakes in Lincoln County, Alexander Lake ranks #13 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-09-21. Methodology: how these readings are compared.
Alexander Lake covers about 620 acres in Lincoln County. It has 2 public boat landings, so a lakefront rental is not the only way to get a boat on the water. For a place on the water, look through cabin and lake-house rentals near Alexander Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Alexander Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
- Fishing6 species recorded
- Deep water36 ft surveyed max depth
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 Alexander 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 Alexander Lake
These are the measurements Wisconsin DNR publishes for Alexander Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4 ft. Phosphorus 46.2 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 46.2µg/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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Alexander Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Largemouth Bass as common on Alexander Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Alexander 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. 3 stations on file (most recent sample 2022).
Fish Species (DNR-rated)
Lake Details
Max depth
36 ft
Surface area
618 acres
Public access
Yes
Listed by Wisconsin DNR
Recreation & Access
- Council Grounds State ParkPublic
- Alexander LakeSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Alexander Lake
Compare lakeside cabins, hotels, and vacation rentals near Alexander Lake in Lincoln 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 Alexander Lake are listed below.
Top-rated places to stay near Alexander 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 →
Follow Alexander Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Alexander 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.
Reservoir Info (USACE NID)
Alexander Lake is a man-made reservoir impounded by the Alexander (completed 1913), built primarily for hydroelectric on the Wisconsin River; gravity-type dam, 40 ft tall and 1,481 ft long.
- Surface area
- 803 ac
- Normal storage
- 5,200 ac-ft
- Max storage
- 6,600 ac-ft
- Drainage area
- 2,520 sq mi
- Hazard class
- High
- Owner
- Wisconsin Public Service Corporation
All listed purposes: Hydroelectric;Recreation.
Source: USACE National Inventory of Dams, NID ID WI00748 · Operator website
Nearby Lakes in Lincoln County
Frequently asked questions about Alexander Lake
Where is Alexander Lake?
- Alexander Lake is a lake in Lincoln County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Alexander Lake?
- Alexander Lake in Lincoln County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4 ft visibility. Phosphorus: 46.2 µg/L. Maximum depth: 36 ft. Surface area: 618 acres.
Is Alexander Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Alexander Lake?
- Alexander Lake has a maximum depth of 36 feet. The lake covers 618 acres.
What fish are in Alexander Lake?
- Fish species found in Alexander Lake include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Alexander Lake is located in Lincoln County, Wisconsin.
What did the DNR fisheries survey find at Alexander Lake?
- Wisconsin DNR lists Largemouth Bass as common on Alexander Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Alexander 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 Alexander Lake?
- Alexander Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Council Grounds State Park, Alexander Lake. Public access is listed as yes.
Can I fish at Alexander Lake?
- Alexander Lake has 2 documented boat landings 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 Alexander Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Wisconsin
Fish species and best lakes in Lincoln County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its readings
Lakes in the Wisconsin River Watershed, ranked by water quality
Wisconsin's cleanest lakes, ranked on agency measurements
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Eutrophic Lakes in Wisconsin
Compare Alexander Lake With Nearby Lakes
Where this data comes from
8 measurements from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX8 samples · 2022
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