Little Lake Twenty
Gladwin County, WisconsinLimited DataMesotrophic
Little Lake Twenty is a 128-acre mesotrophic lake in Gladwin County, MI. Water quality is graded C based on 1 sampling years through 2022. Compared to the 8 other monitored lakes in Gladwin County, Little Lake Twenty ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2022-09-10. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 9 ft. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 128 acres |
Location
County Ranking
Ranked #6 of 9 lakes in Gladwin County
Cleaner Lakes Within 30 Miles
Little Lake Twenty holds Grade C. 3 nearby lakes hold higher grades.
- AIsland Lake Central Basin; Sherman TownshipGladwin County · 12.5 mi · Two grade letters higher (C → A)
- AArnold Lake North Central Basin; Hayes Township Sec. 2Clare County · 12.8 mi · Two grade letters higher (C → A)
- BGrass LakeGladwin County · 12 mi · Higher grade (C → B)
Nearby Lakes in Gladwin County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Cass County · Clarity: 7 ft
Leelanau County · Clarity: 9.5 ft
Iosco County · Clarity: 5.5 ft
Muskegon County · Clarity: 6.8 ft
Montmorency County · Clarity: 9 ft
Oakland County · Clarity: 9 ft
Mesotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
Little Lake Twenty is a man-made reservoir impounded by the Scottish Hills Lake Dam (completed 1974), built primarily for recreation on the Lake Twenty Outlet; earth-type dam, 14 ft tall and 200 ft long.
- Surface area
- 128 ac
- Normal storage
- 1,350 ac-ft
- Max storage
- 2,100 ac-ft
- Drainage area
- 3.6 sq mi
- Hazard class
- Low
- Owner
- Scottish Hills Condominium Assn
Source: USACE National Inventory of Dams, NID ID MI00656 · Operator website · Matched by proximity (0.72 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2022-09-10
Monitoring stations: 1