Lake Walthall
Lake Walthall in Walthall County, Mississippi has a water quality grade of B (Good). Water clarity: 6.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 11.2 µg/L. Surface area: 37 acres.
- Clarity
- 6.2 ft
- Area
- 37 acres
- Type
- Eutrophic
- Public access
- Yes
Lake Walthall is a 37-acre productive, nutrient-rich eutrophic lake in Walthall County, Mississippi. Water quality is graded B based on 2 sampling years through 2021. 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. Grade methodology: LakeGrade methodology.
Watch Lake Walthall water quality
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 6.2 ft. Phosphorus level: 30 µg/L. Chlorophyll-a: 11.2 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.2 ft | Not graded |
| Phosphorus | 30 µg/L | Good |
| Chlorophyll-a (Algae) | 11.2 µg/L | Good |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Walthall
Compare lakeside cabins, hotels, and vacation rentals near Lake Walthall in Walthall County, Mississippi — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Walthall
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 37 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lake Walthall, so its depth is not documented here.
Recreation & Access
- Lake WalthallPublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
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
County Ranking
Ranked #1 of 1 lakes in Walthall County
Nearby Lakes in Walthall County
Frequently asked questions about Lake Walthall
Where is Lake Walthall?
- Lake Walthall is a lake in Walthall County, Mississippi. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Walthall?
- Lake Walthall in Walthall County, Mississippi has a water quality grade of B (Good). 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?
- Good for swimming, clear water with low algae levels. Lake Walthall has a water quality grade of B (Good). Algae concentration (chlorophyll-a) is 11.2 µg/L. Always check local health department advisories before swimming.
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.
Explore Lake Walthall across LakeGrade
More Mississippi Lake Rankings
Other Grade B Lakes in Mississippi
Eutrophic Lakes in Mississippi
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory