Sandusky Bay Ambient Station Off Johnson'S Island Lake
Erie County, OhioView mapDirections
This is the name Ohio EPA records for this water. It can describe one sampling location rather than the water as a whole.
Ohio EPA publishes the water-quality measurements for Sandusky Bay Ambient Station Off Johnson'S Island Lake. Here is what has been measured.
- Impaired · Algal growth
- Public access
- Limited data
Sandusky Bay Ambient Station Off Johnson'S Island Lake in Erie County, Ohio has water-quality measurements published by Ohio EPA, shown here as reported. Phosphorus: 68.2 µg/L. Chlorophyll-a (algae): 30.5 µg/L.
Sandusky Bay Ambient Station Off Johnson'S Island Lake is a lake in Erie County, Ohio. Limited fish-species data available. Public access is available with 12 public boat landings.
Source: EPA Water Quality Portal sampling records, Ohio EPA, last sampled 2024-09-17. Methodology: how these readings are compared.
What Sandusky Bay Ambient Station Off Johnson'S Island Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch12 documented ramps
- Camping2 public campgrounds nearby
Swimming conditions
No readingBacteria advisory
Nutrient and algae readings are not a swimming clearance. Sandusky Bay Ambient Station Off Johnson'S Island Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, habitat alterations, nuisance exotic species, nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pathogens (E. coli, fecal), pCBs, sediment / turbidity. Check local advisories before you swim.
Whether Sandusky Bay Ambient Station Off Johnson'S Island Lake 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.
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Water quality measurements for Sandusky Bay Ambient Station Off Johnson'S Island Lake
These are the measurements Ohio EPA publishes for Sandusky Bay Ambient Station Off Johnson'S Island 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 68.2 µg/L. Chlorophyll-a 30.5 µg/L. TSI 65.
| 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 | 68.2µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 30.5µg/L | Measured, not scored 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. | 65 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Sandusky Bay Ambient Station Off Johnson'S Island Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
- Battery Park Marine ServicePublic
- Bay Point MarinaPublic
- Castaway HarborPublic
- Dempsey Wildlife AreaPublic
- Historic HarborPublic
- Marblehead Harbor MarinaPublic
Showing 6 of 12 documented landings from the USGS National Boat Ramps inventory.
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Sandusky Bay Ambient Station Off Johnson'S Island Lake
- Lighthouse Point at Cedar Point4.3 km
- Bayfront Resort at Cross View4.6 km
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
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Stays near Sandusky Bay Ambient Station Off Johnson'S Island Lake
Compare lakeside cabins, hotels, and vacation rentals near Sandusky Bay Ambient Station Off Johnson'S Island Lake in Erie 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.
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Fishing Sandusky Bay Ambient Station Off Johnson'S Island Lake
Water quality readings over time
3 seasons of samples on record (2021–2024). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Stable+0.74 µg/L/yr3 years
Chlorophyll-a
Stable-0.08 µg/L/yr3 years
EPA Impairment Status
Sandusky Bay Ambient Station Off Johnson'S Island Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water, Aquatic life, Fish consumption, Recreation.
Source: EPA ATTAINS assessment unit OHLE041202000202 · Official waterbody report
Nearby Lakes in Erie County
Frequently asked questions about Sandusky Bay Ambient Station Off Johnson'S Island Lake
Where is Sandusky Bay Ambient Station Off Johnson'S Island Lake?
- Sandusky Bay Ambient Station Off Johnson'S Island Lake is in Erie County, Ohio. This is the name Ohio EPA records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by Ohio EPA and shown on this page as reported.
What is the water quality of Sandusky Bay Ambient Station Off Johnson'S Island Lake?
- Sandusky Bay Ambient Station Off Johnson'S Island Lake in Erie County, Ohio has water-quality measurements published by Ohio EPA, shown here as reported. Phosphorus: 68.2 µg/L. Chlorophyll-a (algae): 30.5 µg/L.
Is Sandusky Bay Ambient Station Off Johnson'S Island Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Sandusky Bay Ambient Station Off Johnson'S Island Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, habitat alterations, nuisance exotic species, nutrients (phosphorus, nitrogen), oxygen depletion (low DO), pathogens (E. coli, fecal), pCBs, sediment / turbidity. Check local advisories before you swim.
Are there boat ramps on Sandusky Bay Ambient Station Off Johnson'S Island Lake?
- Sandusky Bay Ambient Station Off Johnson'S Island Lake has 12 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Battery Park Marine Service, Bay Point Marina, Castaway Harbor, Dempsey Wildlife Area, among others. Public access is listed as yes.
Can I fish at Sandusky Bay Ambient Station Off Johnson'S Island Lake?
- Sandusky Bay Ambient Station Off Johnson'S Island Lake has 12 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.
Are there campgrounds on Sandusky Bay Ambient Station Off Johnson'S Island Lake?
- Sandusky Bay Ambient Station Off Johnson'S Island Lake has 2 public campgrounds from USGS The National Map within 5 km, including Lighthouse Point at Cedar Point, Bayfront Resort at Cross View. 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.
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Where this data comes from
90 measurements from 1 monitoring station, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Division of Surface water (Ohio)
21OHIO_WQX90 samples · 2021–2024
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
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles