What is the water quality grade for Ducc Lake?

Ducc Lake in Cullman County, Alabama received a water quality grade of C (Fair). Water clarity: 4.1 ft visibility. Phosphorus: 31 µg/L. Chlorophyll-a (algae): 19.2 µg/L.

Is Ducc Lake safe to swim in?

Swim with caution, moderate algae may be present. Ducc Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 19.2 µg/L. Always check local health department advisories before swimming.

Cullman County, Alabama

Ducc Lake

Grade CFair · 4.1 ft clarity

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Eutrophic

Ducc Lake is a productive, nutrient-rich eutrophic lake in Cullman County, Alabama. Water quality is graded C based on 2 sampling years through 2024. Compared to the 2 other monitored lakes in Cullman County, Ducc Lake ranks #1 for water quality.

Source: EPA Water Quality Portal sampling records, Alabama DNR, last sampled 2024-09-18. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swim with caution, moderate algae may be present

Water Quality Grade: C, Fair

Murky, only visible to about 4.1 ft. Phosphorus level: 31 µg/L. Chlorophyll-a: 19.2 µg/L. Trophic State Index: 57.

Metric	Value	Grade
Water Clarity (Secchi Depth)	4.1 ft	D
Phosphorus	31 µg/L	C
Chlorophyll-a (Algae)	19.2 µg/L	C
Trophic State Index (TSI)	57	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Ducc Lake

Compare lakeside cabins, hotels, and vacation rentals near Ducc Lake in Cullman County, Alabama — 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.

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