Hoover Reservoir
Delaware County, OhioView mapDirections
Ohio EPA publishes the water-quality measurements for Hoover Reservoir. Here is what has been measured.
- Hypereutrophic
- Public access
- Limited data
Hoover Reservoir in Delaware County, Ohio has water-quality measurements published by Ohio EPA, shown here as reported. Phosphorus: 168 µg/L. Chlorophyll-a (algae): 69.8 µg/L.
Hoover Reservoir is a highly nutrient-loaded hypereutrophic lake in Delaware County, Ohio. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 3 other monitored lakes in Delaware County, Hoover Reservoir ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Ohio EPA, last sampled 2024-09-12. Methodology: how these readings are compared.
What Hoover Reservoir is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
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 Hoover Reservoir is safe to swim in today is a call for the Ohio Environmental Protection Agency and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hoover Reservoir
These are the measurements Ohio EPA publishes for Hoover Reservoir, 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 168 µg/L. Chlorophyll-a 69.8 µg/L. TSI 75.
| 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 | 168µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 69.8µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 75 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Hoover Reservoir
Answers come straight from the public measurements and survey records on this page.
→ Hoover Reservoir water level: the live USGS gauge reading
Recreation & Access
- Hoover Reservoir - Baldridge Boat RampPublic
- Hoover Reservoir - Oxbow Road Launch RampPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Hoover Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Hoover Reservoir in Delaware County, Ohio — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Hoover Reservoir are listed below.
Top-rated places to stay near Hoover Reservoir
Prices for Nov 6–8, 4 adults. Change dates on the map below.
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Planning a trip? Cabins and lodging at Hoover Reservoir → · more Ohio lake trips
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Fishing Hoover Reservoir
Nearby Lakes in Delaware County
Frequently asked questions about Hoover Reservoir
Where is Hoover Reservoir?
- Hoover Reservoir is a lake in Delaware County, Ohio. Its water-quality measurements are published by Ohio EPA and shown on this page as reported.
What is the water quality of Hoover Reservoir?
- Hoover Reservoir in Delaware County, Ohio has water-quality measurements published by Ohio EPA, shown here as reported. Phosphorus: 168 µg/L. Chlorophyll-a (algae): 69.8 µg/L.
Is Hoover Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Hoover Reservoir?
- Hoover Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Hoover Reservoir - Baldridge Boat Ramp, Hoover Reservoir - Oxbow Road Launch Ramp. Public access is listed as yes.
Can I fish at Hoover Reservoir?
- Hoover Reservoir has 2 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Ohio's fish and wildlife agency, so check its current regulations before you go.
Explore Hoover Reservoir across LakeQuality
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Where this data comes from
43 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Division of Surface water (Ohio)
21OHIO_WQX43 samples · 2024
Analytical methods
- Total Phosphorus After Block Digestion
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (1)
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
Named boat-access points from the USGS National Boat Ramps inventory