Pool A
Pool A in Monroe County, Mississippi has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 9.9 µg/L. Surface area: 914 acres.
- Clarity
- 2 ft
- Area
- 914 acres
- Type
- Eutrophic
- Public access
- Yes
Pool A is a 914-acre productive, nutrient-rich eutrophic lake in Monroe County, Mississippi. Water quality is graded B based on 1 sampling years through 2024. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 2 other monitored lakes in Monroe County, Pool A ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2024-10-30. Grade methodology: LakeGrade methodology.
Watch Pool A water quality
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Swimming Safety
Grade onlyLow algae
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)
Very murky, less than 2 ft of visibility. Phosphorus level: 40 µg/L. Chlorophyll-a: 9.9 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | 40 µg/L | Not graded |
| Chlorophyll-a (Algae) | 9.9 µg/L | Good |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Pool A
Compare lakeside cabins, hotels, and vacation rentals near Pool A in Monroe 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 Pool A
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 914 acres |
| Public Access | Yes |
No bathymetric survey has been published for Pool A, so its depth is not documented here.
Recreation & Access
- Tennessee-Tombigbee Waterway Lock APublic
Named access points from the USGS National Boat Ramps inventory, snapped within 5 km. More lakes with boat ramps
Fishing Pool A
Reservoir Info (USACE NID)
Pool A is a man-made reservoir impounded by the Thad Cochran Lock and Dam (completed 1982), built primarily for navigation on the Tombigbee; gravity-type dam, 46 ft tall and 3,400 ft long.
- Surface area
- 914 ac
- Normal storage
- 4,386 ac-ft
- Max storage
- 4,386 ac-ft
- Drainage area
- 1,226 sq mi
- Hazard class
- Significant
- Owner
- USACE - Mobile District
All listed purposes: Navigation;Recreation.
Source: USACE National Inventory of Dams, NID ID MS03058 · Operator website
County Ranking
Ranked #1 of 3 lakes in Monroe County
Nearby Lakes in Monroe County
Frequently asked questions about Pool A
Where is Pool A?
- Pool A is a lake in Monroe County, Mississippi. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Pool A?
- Pool A in Monroe County, Mississippi has a water quality grade of B (Good). Water clarity: 2 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 9.9 µg/L. Surface area: 914 acres.
Is Pool A safe to swim in?
- Good for swimming, clear water with low algae levels. Pool A has a water quality grade of B (Good). Algae concentration (chlorophyll-a) is 9.9 µg/L. Always check local health department advisories before swimming.
Are there boat ramps on Pool A?
- Pool A has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Tennessee-Tombigbee Waterway Lock A. Public access is listed as yes.
Explore Pool A across LakeGrade
More Mississippi Lake Rankings
Other Grade B Lakes in Mississippi
Eutrophic Lakes in Mississippi
Where this data comes from
162 measurements from 2 monitoring stations, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY
21MSWQ_WQX162 samples · 2022–2024
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (2)
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