Danw Lake
Dallas County, AlabamaView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
↑ up from C at the last regrade
- Eutrophic
- #2 of 2 in the county
- Public access
Danw Lake in Dallas County, Alabama has a water quality grade of B (Good). Water clarity: 3 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 8.9 µg/L.
- Clarity
- 3 ft
- Type
- Eutrophic
- Phosphorus
- 30 µg/L
- Chlorophyll-a
- 8.9 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Danw Lake’s letter
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Danw Lake is a productive, nutrient-rich eutrophic lake in Dallas County, Alabama. Water quality is graded B based on 2 sampling years through 2023. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Dallas County, Danw Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2023-10-18. Grade methodology: LakeQuality methodology.
What Danw Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
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 B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
Very murky, less than 3 ft of visibility. Phosphorus 30 µg/L. Chlorophyll-a 8.9 µg/L. TSI 55. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | Not graded |
| Phosphorus | 30 µg/L | Good |
| Chlorophyll-a (Algae) | 8.9 µg/L | Good |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
- Elm BluffPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Danw Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.016 m/yr | 5 |
| Phosphorus | → Stable | -0.44 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +1.23 µg/L/yr | 5 |
County Ranking
Ranked #2 of 2 lakes in Dallas County
Nearby Lakes With Higher Grades
Danw Lake holds Grade B. One nearby lake has a higher nutrient-and-algae grade — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Dallas County
Frequently asked questions about Danw Lake
Where is Danw Lake?
- Danw Lake is a lake in Dallas County, Alabama. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Danw Lake?
- Danw Lake in Dallas County, Alabama has a water quality grade of B (Good). Water clarity: 3 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 8.9 µg/L.
Is Danw Lake safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Danw Lake?
- Danw Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Elm Bluff. Public access is listed as yes.
Explore Danw Lake across LakeQuality
More Alabama Lake Rankings
Other Grade B Lakes in Alabama
Where this data comes from
137 measurements from 1 monitoring station, 2013–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC137 samples · 2013–2023
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
Named boat-access points from the USGS National Boat Ramps inventory