Lake Walthall
Walthall County, Mississippi37 acresView mapDirections
MDEQ publishes the water-quality measurements for Lake Walthall. Here is what has been measured.
- Eutrophic
- Public access
- Limited data
Lake Walthall in Walthall County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 11.2 µg/L. Surface area: 37 acres.
Lake Walthall is a 37-acre productive, nutrient-rich eutrophic lake in Walthall County, Mississippi. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2021-10-05. Methodology: how these readings are compared.
What Lake Walthall is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Walthall is safe to swim in today is a call for the Mississippi Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Walthall
These are the measurements MDEQ publishes for Lake Walthall, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 6.2 ft. Phosphorus 30 µg/L. Chlorophyll-a 11.2 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 30µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 11.2µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Walthall
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
37 acres
Public access
Yes
Listed by MDEQ
No bathymetric survey has been published for Lake Walthall, so its depth is not documented here.
Recreation & Access
- Lake WalthallPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Stays near Lake Walthall
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Fishing Lake Walthall
Reservoir Info (USACE NID)
Lake Walthall is a man-made reservoir impounded by the Lake Walthall Dam (completed 1965), built primarily for recreation on the Unt of Kirklin Creek; earth-type dam, 35 ft tall and 1,170 ft long.
- Surface area
- 37 ac
- Normal storage
- 309 ac-ft
- Max storage
- 1,549 ac-ft
- Drainage area
- 1.89 sq mi
- Hazard class
- Undetermined
- Owner
- MISSISSIPPI DEPARTMENT OF WILDLIFE FISHERIES AND PARKS
Source: USACE National Inventory of Dams, NID ID MS01158 · Operator website
Nearby Lakes in Walthall County
Frequently asked questions about Lake Walthall
Where is Lake Walthall?
- Lake Walthall is a lake in Walthall County, Mississippi. Its water-quality measurements are published by MDEQ and shown on this page as reported.
What is the water quality of Lake Walthall?
- Lake Walthall in Walthall County, Mississippi has water-quality measurements published by MDEQ, shown here as reported. Water clarity: 6.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 11.2 µg/L. Surface area: 37 acres.
Is Lake Walthall safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Lake Walthall?
- Lake Walthall has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Walthall. Public access is listed as yes.
Can I fish at Lake Walthall?
- Lake Walthall has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Mississippi's fish and wildlife agency, so check its current regulations before you go.
Explore Lake Walthall across LakeQuality
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Where this data comes from
59 measurements from 1 monitoring station, 2020–2021. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
21MSWQ_WQX59 samples · 2020–2021
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)
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.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory