Dutch Hollow Lake
Sauk County, Wisconsin172 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Dutch Hollow Lake. Here is what has been measured.
- Oligotrophic
- 2 aquatic invasives
- 38 ft max depth
- Public access
Dutch Hollow Lake in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 15 ft visibility. Phosphorus: 13.1 µg/L. Maximum depth: 38 ft. Surface area: 172 acres.
Wisconsin DNR lists Largemouth Bass as common on Dutch Hollow Lake. DNR survey details →
Dutch Hollow Lake is a 172-acre cold, clear oligotrophic lake in Sauk County, Wisconsin with a maximum depth of 38 feet. Overall water quality is declining over recent sampling years. The lake supports 2 documented fish species including Largemouth Bass and Walleye. Public access is available with 2 public boat landings. Compared to the 6 other monitored lakes in Sauk County, Dutch Hollow Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-23. Methodology: how these readings are compared.
Dutch Hollow Lake covers about 170 acres in Sauk County. It has 2 public boat landings, so a lakefront rental is not the only way to get a boat on the water. If you are planning to stay, you can search lake houses and cabins around Dutch Hollow Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Dutch Hollow Lake is good for
From access and monitoring records, not editorial picks.
- Clear water15 ft of visibility
- Boat launch2 documented ramps
- Deep water38 ft surveyed max depth
Swimming conditions
Readings onlyLow algae
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 Dutch Hollow 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 Dutch Hollow Lake
These are the measurements Wisconsin DNR publishes for Dutch Hollow Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 15 ft down. Phosphorus 13.1 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 15ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.1µg/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 Dutch Hollow Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Largemouth Bass as common on Dutch Hollow Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Dutch Hollow Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. 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. Monitored by volunteers since 1998. 5 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
38 ft
Surface area
172 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
5 sq mi
HydroLAKES / HydroSHEDS
Shoreline
4.5 mi
HydroLAKES / HydroSHEDS
Elevation
955 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- AublePublic
- Dam SitePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Dutch Hollow Lake
Compare lakeside cabins, hotels, and vacation rentals near Dutch Hollow Lake in Sauk 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 Dutch Hollow 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 Dutch Hollow Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Dutch Hollow Lake
- → Dutch Hollow Lake fishing: DNR survey catch rates, species & stocking
- → Dutch Hollow Lake fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Dutch Hollow Lake fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Dutch Hollow Lake? (mercury & PFAS guide)
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 Trend: Worsening
Based on 7 years of monitoring (2020–2026).
Water clarity
Worsening6 years
Phosphorus
Worsening+0.51 µg/L/yr7 years
Reservoir Info (USACE NID)
Dutch Hollow Lake is a man-made reservoir impounded by the Dutch Hollow Lake (completed 1971), built primarily for recreation on the Dutch Hollow Creek; earth-type dam, 60 ft tall and 750 ft long.
- Surface area
- 125 ac
- Normal storage
- 1,250 ac-ft
- Max storage
- 5,500 ac-ft
- Drainage area
- 5 sq mi
- Hazard class
- Low
- Owner
- Dutch Hollow Lake Property Owners' Association, Inc.
Source: USACE National Inventory of Dams, NID ID WI00193 · Operator website
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Dutch Hollow Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Wonewoc Wastewater Treatment FacilityWonewoc · 2.6 mi away · NPDES WI0029688Recent 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.
Nearby Lakes in Sauk County
Frequently asked questions about Dutch Hollow Lake
Where is Dutch Hollow Lake?
- Dutch Hollow Lake is a lake in Sauk County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Dutch Hollow Lake?
- Dutch Hollow Lake in Sauk County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 15 ft visibility. Phosphorus: 13.1 µg/L. Maximum depth: 38 ft. Surface area: 172 acres.
Is Dutch Hollow Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Dutch Hollow Lake?
- Dutch Hollow Lake has a maximum depth of 38 feet. The lake covers 172 acres.
What fish are in Dutch Hollow Lake?
- Fish species found in Dutch Hollow Lake include Largemouth Bass, Walleye. Dutch Hollow Lake is located in Sauk County, Wisconsin.
What did the DNR fisheries survey find at Dutch Hollow Lake?
- Wisconsin DNR lists Largemouth Bass as common on Dutch Hollow Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Dutch Hollow Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Dutch Hollow Lake?
- Dutch Hollow Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Auble, Dam Site. Public access is listed as yes.
Can I fish at Dutch Hollow Lake?
- Dutch Hollow 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 Dutch Hollow Lake across LakeQuality
3.7 mi away · cable-pulled, no boat wake
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Fish species and best lakes in Sauk County
Species activity outlook by water temperature and season
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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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State Parks Near Dutch Hollow Lake
Other Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
Where this data comes from
37 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX37 samples · 2020–2026
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)
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