Hall Lake
Harmon County, Oklahoma36 acresView mapDirections
Oklahoma DEQ publishes the water-quality measurements for Hall Lake. Here is what has been measured.
- Limited data
Hall Lake in Harmon County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 2.4 ft visibility. Surface area: 36 acres.
Hall Lake is a 36-acre lake in Harmon County, Oklahoma.
Source: EPA Water Quality Portal sampling records, ODEQ, last sampled 2020-08-31. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Hall Lake is safe to swim in today is a call for the Oklahoma Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hall Lake
These are the measurements Oklahoma DEQ publishes for Hall Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.4 ft of visibility. TSI 65.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 65 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Hall Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
36 acres
No bathymetric survey has been published for Hall Lake, so its depth is not documented here.
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Fishing Hall Lake
Reservoir Info (USACE NID)
Hall Lake is a man-made reservoir impounded by the Hall Lake (completed 1954), built primarily for flood risk reduction on the Tr-Salt Fork Red River; earth-type dam, 40 ft tall and 1,050 ft long.
- Surface area
- 36 ac
- Normal storage
- 288 ac-ft
- Max storage
- 330 ac-ft
- Hazard class
- Low
- Owner
- MONA BOONE
Source: USACE National Inventory of Dams, NID ID OK00696 · Operator website
Nearby Lakes in Harmon County
Frequently asked questions about Hall Lake
Where is Hall Lake?
- Hall Lake is a lake in Harmon County, Oklahoma. Its water-quality measurements are published by Oklahoma DEQ and shown on this page as reported.
What is the water quality of Hall Lake?
- Hall Lake in Harmon County, Oklahoma has water-quality measurements published by Oklahoma DEQ, shown here as reported. Water clarity: 2.4 ft visibility. Surface area: 36 acres.
Is Hall Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Hall Lake across LakeQuality
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Where this data comes from
12 measurements from 3 monitoring stations, 2019–2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- OWRB Lakes Monitoring
OKWRB-LAKES_WQX12 samples · 2019–2020
Analytical methods
- OWRB Lakes Field Data Collection
- Determination of Turbidity
Monitoring station identifiers (3)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.