Clara Lake-Deep Hole
Clara Lake-Deep Hole in Lincoln County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 23.8 ft visibility. Maximum depth: 50 ft. Surface area: 21 acres.
Wisconsin DNR rates Panfish as abundant on Clara Lake-Deep Hole. DNR survey details →
- Clarity
- 23.8 ft
- Max depth
- 50 ft
- Area
- 21 acres
- Trend
- ↑ Improving
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Why Clara Lake-Deep Hole 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 Clara Lake-Deep Hole, 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.
Clara Lake-Deep Hole is a 21-acre lake in Lincoln County, Wisconsin with a maximum depth of 50 feet. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-09-14. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Clara Lake-Deep Hole
These readings exist but are not enough for an A–F grade — see why.
Crystal clear, you can see 23.8 ft down. Trophic State Index: 31.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 23.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 31 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Clara Lake-Deep Hole
Compare lakeside cabins, hotels, and vacation rentals near Clara Lake-Deep Hole 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.
Top-rated places to stay near Clara Lake-Deep Hole
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Wisconsin DNR rates Panfish as abundant on Clara Lake-Deep Hole.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Clara Lake-Deep Hole — official chemistry is on file, not a letter, and the water-quality trend over 7 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 2022).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 50 ft |
| Surface Area | 21 acres |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Clara Lake-Deep Hole
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.929 m/yr | 6 |
| Phosphorus | ↑ Improving | -1.58 µg/L/yr | 7 |
EPA Impairment Status
Clara Lake-Deep Hole 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 WI10026794 · Official waterbody report · Matched by proximity (1.08 km)
Graded lakes near Clara Lake-Deep Hole
Clara Lake-Deep Hole has no grade, but these lakes within a short drive do.
Nearby Lakes in Lincoln County
Frequently asked questions about Clara Lake-Deep Hole
Where is Clara Lake-Deep Hole?
- Clara Lake-Deep Hole is a lake in Lincoln 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 Clara Lake-Deep Hole?
- Clara Lake-Deep Hole in Lincoln County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 23.8 ft visibility. Maximum depth: 50 ft. Surface area: 21 acres.
Is Clara Lake-Deep Hole safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Clara Lake-Deep Hole is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Clara Lake-Deep Hole?
- Clara Lake-Deep Hole has a maximum depth of 50 feet. The lake covers 21 acres.
What fish are in Clara Lake-Deep Hole?
- Fish species found in Clara Lake-Deep Hole include Panfish, Largemouth Bass. Clara Lake-Deep Hole is located in Lincoln County, Wisconsin.
What did the DNR fisheries survey find at Clara Lake-Deep Hole?
- Wisconsin DNR rates Panfish as abundant on Clara Lake-Deep Hole. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality does not assign an A–F grade on Clara Lake-Deep Hole — official chemistry is on file, not a letter, and the water-quality trend over 7 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
2 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_WQX2 samples · 2022
Analytical methods
- Turbidity in Water
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
Fish and recreation data from Wisconsin DNR Lakes