Shlb Lake
Baldwin County, AlabamaView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
↑ up from B at the last regrade
- Oligotrophic
- #1 of 1 in the county
- 40 ft max depth
- Public access
Shlb Lake in Baldwin County, Alabama has a water quality grade of A (Excellent). Water clarity: 4.4 ft visibility. Phosphorus: 32.5 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
- Clarity
- 4.4 ft
- Max depth
- ~40 ft est.
- Type
- Oligotrophic
- Phosphorus
- 32.5 µg/L
- Chlorophyll-a
- 1.1 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Shlb Lake’s letter
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Shlb Lake is a cold, clear oligotrophic lake in Baldwin County, Alabama with an estimated average depth of about 40 feet. Water quality is graded A based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2024-10-10. Grade methodology: LakeQuality methodology.
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.
The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
Murky, only visible to about 4.4 ft. Phosphorus 32.5 µg/L. Chlorophyll-a 1.1 µg/L. TSI 47. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.4 ft | Not graded |
| Phosphorus | 32.5 µg/L | Good |
| Chlorophyll-a (Algae) | 1.1 µg/L | Good |
| Trophic State Index (TSI) | 47 | Oligotrophic |
Low nutrients, clear water. The letter is not a swimming clearance.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~40 ft est. |
| Average Depth | ~9 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Alabama has not published bathymetry for Shlb Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Shlb Lake
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.022 m/yr | 3 |
| Phosphorus | ↓ Declining | +3.75 µg/L/yr | 3 |
| Chlorophyll-a | ↓ Declining | +0.1 µg/L/yr | 3 |
County Ranking
Ranked #1 of 1 lakes in Baldwin County
Nearby Lakes in Baldwin County
Frequently asked questions about Shlb Lake
Where is Shlb Lake?
- Shlb Lake is a lake in Baldwin County, Alabama. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Shlb Lake?
- Shlb Lake in Baldwin County, Alabama has a water quality grade of A (Excellent). Water clarity: 4.4 ft visibility. Phosphorus: 32.5 µg/L. Chlorophyll-a (algae): 1.1 µg/L.
Is Shlb Lake safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Shlb Lake?
- No published bathymetric survey covers Shlb Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 40 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Shlb Lake across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Alabama's top lakes, each with its grade
Low nutrients, clear water. The letter is not a swimming clearance.
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Other Grade A Lakes in Alabama
Where this data comes from
103 measurements from 1 monitoring station, 2018–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC103 samples · 2018–2024
Analytical methods
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 2120 B ~ Color in Water by Visual Comparison
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
Lake size & watershed from HydroLAKES (HydroSHEDS)