Iona Lake is a lake in Gloucester County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.

Iona Lake

Gloucester County, New Jersey33 acresView map Directions

No nutrient or algae sampling on record from NJDEP for this lake.

Area

33 acres

Surface area

Shoreline

1.8 mi

Measured length

Impaired · Impaired biota (cause unknown)

See the measurements Directions Where to stay

Iona Lake in Gloucester County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 33 acres.

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Iona Lake is a 33-acre lake in Gloucester County, New Jersey.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Iona Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury). Check local advisories before you swim.

Whether Iona Lake is safe to swim in today is a call for the New Jersey Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Iona Lake

These are the measurements NJDEP publishes for Iona 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. TSI undefined.

Ask about Iona Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

33 acres

Shoreline

1.8 mi

No bathymetric survey has been published for Iona Lake, so its depth is not documented here.

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Stays near Iona Lake

Compare lakeside cabins, hotels, and vacation rentals near Iona Lake in Gloucester County, New Jersey — 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 Iona Lake

→ Iona Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Iona Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Impaired biota (cause unknown)MercuryMetals (other than mercury)

Designated uses not supporting: Drinking water, Aquatic life, Fish consumption.

Source: EPA ATTAINS assessment unit NJ02040206120050-01 · Official waterbody report

Nearby Lakes in Gloucester County

Franklinville Lake1.7 miView →Malaga Lake3.6 ft clear · Eutrophic1.9 miView →Garrison Lake3.3 miView →Silver Lake4.4 miView →Wilson Lake—View →Sunset Lake—View →

Frequently asked questions about Iona Lake

Where is Iona Lake?: Iona Lake is a lake in Gloucester County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Iona Lake?: Iona Lake in Gloucester County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 33 acres.
Is Iona Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Iona Lake is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury). Check local advisories before you swim.