H.S. Truman Res. Nr. Dam Lake
Benton County, WisconsinEutrophic
H.S. Truman Res. Nr. Dam Lake is a 55,600-acre productive, nutrient-rich eutrophic lake in Benton County, MO. Water quality is graded C based on 3 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-11. Grade methodology: LakeGrade methodology.
Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Murky, only visible to about 3.8 ft. Phosphorus level: 38.7 µg/L. Chlorophyll-a: 18.3 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.8 ft | D |
| Phosphorus | 38.7 µg/L | C |
| Chlorophyll-a (Algae) | 18.3 µg/L | C |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 55.6K acres |
Location
County Ranking
Ranked #1 of 1 lakes in Benton County
Cleaner Lakes Within 30 Miles
H.S. Truman Res. Nr. Dam Lake holds Grade C. 3 nearby lakes hold higher grades.
- BCrystal-Morgan LakeMorgan County · 26.5 mi · Higher grade (C → B)
- CPomme de Terre L. LakeHickory County · 26.2 mi · Higher overall water quality score
- CPomme de Terre Lake 4.5 Mi. Ab. DamHickory County · 27.6 mi · Higher overall water quality score
Nearby Lakes in Benton County
More Wisconsin Lake Rankings
Other Grade C Lakes in Wisconsin
Warren County · Clarity: 3.8 ft
Ralls County · Clarity: 3.7 ft
Warren County · Clarity: 3.3 ft
Platte County · Clarity: 4.7 ft
Barry County · Clarity: 5 ft
Phelps County · Clarity: 4.9 ft
Eutrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
H.S. Truman Res. Nr. Dam Lake is a man-made reservoir impounded by the Harry S. Truman Dam (completed 1979), built primarily for flood risk reduction on the OSAGE RIVER; rockfill-type dam, 98 ft tall and 5,000 ft long.
- Surface area
- 55,600 ac
- Normal storage
- 1,203,404 ac-ft
- Max storage
- 5,202,000 ac-ft
- Drainage area
- 11,500 sq mi
- Hazard class
- High
- Owner
- USACE - Kansas City District
All listed purposes: Flood Risk Reduction;Fish and Wildlife Pond;Recreation;Hydroelectric.
Source: USACE National Inventory of Dams, NID ID MO20725 · Operator website · Matched by proximity (0.64 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-09-11
Monitoring stations: 1