Canyon Lake
Pennington County, WisconsinLimited DataOligotrophic
Canyon Lake is a 29-acre cold, clear oligotrophic lake in Pennington County, SD. Water quality is graded A based on 1 sampling years through 2021.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-06-09. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
No clarity data. Chlorophyll-a: 1.3 µg/L. Trophic State Index: 33.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 1.3 µg/L | A |
| Trophic State Index (TSI) | 33 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 29 acres |
Location
County Ranking
Ranked #1 of 1 lakes in Pennington County
Nearby Lakes in Pennington County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Reservoir Info (USACE NID)
Canyon Lake is a man-made reservoir impounded by the Canyon Lake Dam (completed 1976), built primarily for irrigation on the RAPID CREEK; earth-type dam, 31 ft tall and 1,325 ft long.
- Surface area
- 29 ac
- Normal storage
- 140 ac-ft
- Max storage
- 610 ac-ft
- Drainage area
- 66 sq mi
- Hazard class
- High
- Owner
- CITY OF RAPID CITY
All listed purposes: Irrigation;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID SD02137 · Operator website
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-06-09
Monitoring stations: 1