Where is Twelvemile Lake?

Twelvemile Lake is a lake in Emmet County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.

Twelvemile Lake

Emmet County, Iowa199 acresView map Directions

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

Area

199 acres

Surface area

Shoreline

2.9 mi

Measured length

Impaired · Algal growth

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Twelvemile Lake in Emmet County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Surface area: 199 acres.

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Twelvemile Lake is a 199-acre lake in Emmet County, Iowa.

Source: EPA Water Quality Portal sampling records, Iowa DNR. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Twelvemile Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, turbidity. Check local advisories before you swim.

Whether Twelvemile Lake is safe to swim in today is a call for the Iowa Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Twelvemile Lake

These are the measurements Iowa DNR publishes for Twelvemile 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 Twelvemile Lake

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

Lake Details

Surface area

199 acres

Shoreline

2.9 mi

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

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Stays near Twelvemile Lake

Compare lakeside cabins, hotels, and vacation rentals near Twelvemile Lake in Emmet County, Iowa — 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 Twelvemile Lake

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

EPA Impairment Status

Twelvemile Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthTurbidity

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit IA 04-UDM-1231 · Official waterbody report

Nearby Lakes in Emmet County

Cheever Lake5.8 miView →Fourmile Lake7.3 miView →Bur Oak Lake6.5 miView →High Lake8.5 miView →Ingham Lake1.4 ft clear · Hypereutrophic—View →Cunningham Slough—View →

Frequently asked questions about Twelvemile Lake

Where is Twelvemile Lake?: Twelvemile Lake is a lake in Emmet County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Twelvemile Lake?: Twelvemile Lake in Emmet County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Surface area: 199 acres.
Is Twelvemile Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Twelvemile Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, turbidity. Check local advisories before you swim.