Catclaw Lake
Jackson County, WisconsinLimited DataHypereutrophic
Catclaw Lake is a 43-acre highly nutrient-loaded hypereutrophic lake in Jackson County, MO. Water quality is graded F based on 1 sampling years through 2023. Compared to the 26 other monitored lakes in Jackson County, Catclaw Lake ranks #25 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2023-10-03. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
No clarity data. Phosphorus level: 164 µg/L. Trophic State Index: 78.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 164 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 43 acres |
Location
County Ranking
Ranked #25 of 27 lakes in Jackson County
Cleaner Lakes Within 30 Miles
Catclaw Lake holds Grade F. 5 nearby lakes hold higher grades.
- CLotawana Lk. LakeJackson County · 4.8 mi · Two grade letters higher (F → C)
- DPrairie Lee Lake Nr. DamJackson County · 3.8 mi · Higher grade (F → D)
- FCottontail LakeJackson County · 0.4 mi · Higher overall water quality score
- FCoot LakeJackson County · 1.9 mi · Higher overall water quality score
- FRaintree LakeCass County · 5.2 mi · Higher overall water quality score
Nearby Lakes in Jackson County
More Wisconsin Lake Rankings
Other Grade F Lakes in Wisconsin
St. Louis County · Clarity: 1.6 ft
St. Charles County · Clarity: 2.3 ft
St. Francois County · Clarity: 1.1 ft
Saline County · Clarity: 2.3 ft
Polk County · Clarity: 1.2 ft
Callaway County · Clarity: 1.7 ft
Hypereutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Catclaw Lake is a man-made reservoir impounded by the Catclaw Lake Dam (completed 1966), built primarily for recreation on the TR-BIG CREEK; earth-type dam, 31 ft tall.
- Surface area
- 43 ac
- Normal storage
- 425 ac-ft
- Max storage
- 713 ac-ft
- Drainage area
- 450 sq mi
- Hazard class
- Low
- Owner
- MO DEPT OF CONSERVATION
Source: USACE National Inventory of Dams, NID ID MO20024 · Operator website
EPA Impairment Status
Catclaw Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7374.00 · Official waterbody report
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-10-03
Monitoring stations: 1