High Falls Reservoir at
High Falls Reservoir at in Marinette County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.5 ft visibility. Maximum depth: 54 ft. Surface area: 1471 acres.
Wisconsin DNR lists Largemouth Bass as common on High Falls Reservoir at. DNR survey details →
- Clarity
- 9.5 ft
- Max depth
- 54 ft
- Area
- 1,471 acres
- Public access
- Yes
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Why High Falls Reservoir at has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For High Falls Reservoir at, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
High Falls Reservoir at is a 1,471-acre lake in Marinette County, Wisconsin with a maximum depth of 54 feet. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available with 6 public boat landings.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-07-27. Grade methodology: LakeQuality methodology.
Watch High Falls Reservoir at water quality
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Swimming Safety
Not ratedBacteria A
Based on E. coli testing, High Falls Reservoir at never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 87 samples across 9 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Wisconsin’s current beach and health-department advisories before swimming.
Water quality measurements for High Falls Reservoir at
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9.5 ft. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.5 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near High Falls Reservoir at
Compare lakeside cabins, hotels, and vacation rentals near High Falls Reservoir at in Marinette 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 High Falls Reservoir at
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Planning a trip? Cabins and lodging at High Falls Reservoir at → · more Wisconsin lake trips
Wisconsin DNR lists Largemouth Bass as common on High Falls Reservoir at.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on High Falls Reservoir at — official chemistry is on file, not a letter. 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 2022).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for High Falls Reservoir at covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2018High Falls Flowage comprehensive survey, 2018Comprehensive Survey · WI DNR · 2018 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 54 ft |
| Surface Area | 1,471 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- High Falls Reservoir #6 - Woods CreekPublic
- High Falls Reservoir #7 - Rock CovePublic
- High Falls Reservoir #4 - TwinPublic
- High Falls Reservoir #5 - ChannelPublic
- High Falls Reservoir #3B - Stephenson ParkPublic
- High Falls Reservoir #3 - East BayPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fish Species
Click a species to see every graded lake where it is documented.
Fishing High Falls Reservoir at
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
EPA Impairment Status
High Falls Reservoir at is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10006269 · Official waterbody report · Matched by proximity (0.88 km)
Graded lakes near High Falls Reservoir at
High Falls Reservoir at has no grade, but these lakes within a short drive do.
Nearby Lakes in Marinette County
Frequently asked questions about High Falls Reservoir at
Where is High Falls Reservoir at?
- High Falls Reservoir at is a lake in Marinette County, Wisconsin. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for High Falls Reservoir at?
- High Falls Reservoir at in Marinette County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9.5 ft visibility. Maximum depth: 54 ft. Surface area: 1471 acres.
Is High Falls Reservoir at safe to swim in?
- Based on E. coli testing, High Falls Reservoir at never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 87 samples across 9 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. High Falls Reservoir at is not rated for water quality — its monitoring record does not meet the evidence bar. Bacteria levels can spike quickly after heavy rain, so always check Wisconsin's current beach and health-department advisories before you swim.
How deep is High Falls Reservoir at?
- High Falls Reservoir at has a maximum depth of 54 feet. The lake covers 1471 acres.
What fish are in High Falls Reservoir at?
- Fish species found in High Falls Reservoir at include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. High Falls Reservoir at is located in Marinette County, Wisconsin.
What did the DNR fisheries survey find at High Falls Reservoir at?
- Wisconsin DNR lists Largemouth Bass as common on High Falls Reservoir at. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on High Falls Reservoir at — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on High Falls Reservoir at?
- High Falls Reservoir at has 6 documented boat landings in the USGS National Boat Ramps inventory. Named access points include High Falls Reservoir #6 - Woods Creek, High Falls Reservoir #7 - Rock Cove, High Falls Reservoir #4 - Twin, High Falls Reservoir #5 - Channel, among others. Public access is listed as yes.
Explore High Falls Reservoir at across LakeQuality
Depth, room, public access, and the state wake-sport rules
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Species activity outlook by water temperature and season
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Where this data comes from
1 measurement 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_WQX1 sample · 2022
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
Impairment status from EPA ATTAINS 303(d) database
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