Dewey Lake
Floyd County, KentuckyView mapDirections
Kentucky DOW publishes the water-quality measurements for Dewey Lake. Here is what has been measured.
- Mesotrophic
- Public access
- Limited data
Dewey Lake in Floyd County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported. Phosphorus: 21.4 µg/L.
Dewey Lake is a mesotrophic lake in Floyd County, Kentucky. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, KY DOW, last sampled 2017-10-04. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Dewey Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Dewey Lake is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Dewey Lake is safe to swim in today is a call for the Kentucky Division of Water and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Dewey Lake
These are the measurements Kentucky DOW publishes for Dewey Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 21.4 µg/L. TSI 48.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 21.4µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 48 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Dewey Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
Public campgrounds near Dewey Lake
- Dewey Lake Shelter4.1 kmReserve
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Dewey Lake
Compare lakeside cabins, hotels, and vacation rentals near Dewey Lake in Floyd County, Kentucky — 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 Dewey Lake
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Follow Dewey Lake’s readings
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Fishing Dewey Lake
Water quality readings over time
2 seasons of samples on record (2012–2017). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-1.64 µg/L/yr2 years
Reservoir Info (USACE NID)
Dewey Lake is a man-made reservoir impounded by the Dewey Dam - Brandykeg Dike (completed 1950), built primarily for flood risk reduction on the Johns Creek of Levisa Fork; earth-type dam, 41 ft tall and 315 ft long.
- Normal storage
- 0 ac-ft
- Max storage
- 31,000 ac-ft
- Hazard class
- High
- Owner
- USACE - Huntington District
All listed purposes: Flood Risk Reduction;Fish and Wildlife Pond;Recreation.
Source: USACE National Inventory of Dams, NID ID KY03029 · Operator website
Nearby Lakes in Floyd County
Frequently asked questions about Dewey Lake
Where is Dewey Lake?
- Dewey Lake is a lake in Floyd County, Kentucky. Its water-quality measurements are published by Kentucky DOW and shown on this page as reported.
What is the water quality of Dewey Lake?
- Dewey Lake in Floyd County, Kentucky has water-quality measurements published by Kentucky DOW, shown here as reported. Phosphorus: 21.4 µg/L.
Is Dewey Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Can I fish at Dewey Lake?
- Public access to Dewey Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Kentucky's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Dewey Lake?
- Dewey Lake has 1 public campground from USGS The National Map within 5 km, including Dewey Lake Shelter. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Dewey Lake across LakeQuality
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Mesotrophic Lakes in Kentucky
Where this data comes from
29 measurements from 3 monitoring stations, 2012–2017. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- KY WQX
21KY_WQX29 samples · 2012–2017
Analytical methods
- Phosphorus by Colorimetry
- Total Phosphorus After Block Digestion
Monitoring station identifiers (3)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles