Skip to main content
LakeQuality

Yes — Big Wall Lake in Wright County, Iowa is on the EPA's Clean Water Act 303(d) impaired-waters list (2024 assessment cycle). It is cited for Oxygen depletion (low DO), pH / acidity. No cleanup plan (TMDL) has been completed yet. "Impaired" is a legal designation, separate from the lake's EPA condition class water-quality readings: it means at least one designated use (such as swimming, aquatic life, or fish consumption) does not meet state standards for the listed pollutant.

EPA 303(d) Listing

On 303(d) impaired listYes
Cleanup plan (TMDL)Not yet written
Assessment cycle2024
EPA IR category5
Uses not supportedAquatic life
EPA names this lake in the listingYes
LocationWright County, Iowa

Pollutants Cited

Specific parameters in the EPA record: Dissolved Oxygen, pH.

What this means for using Big Wall Lake

Review the EPA assessment and any state advisories before relying on Big Wall Lake for swimming, fishing, or other uses. An impairment listing does not mean the lake is closed — most impaired lakes remain open for boating and swimming. It means a specific pollutant exceeds a standard for a specific use. See the full breakdown on the lake report. The official EPA assessment is available in the ATTAINS waterbody report.

Stays via Stay22

Where to stay near Big Wall Lake

Compare cabins, hotels, and vacation rentals near Big Wall Lake in Wright County, Iowa. Live availability and prices for your nights. Switch the map to Satellite to see how close each stay is to the water.

Top-rated places to stay near Big Wall Lake

Prices for Oct 2–4, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Big Wall Lake?

Get lake water-quality updates plus the best cabin & lodging deals near Big Wall Lake — straight to your inbox. No spam, unsubscribe anytime.

Watch Big Wall Lake water quality

Get an email when the clarity or algae readings change. Unsubscribe anytime.

More on Big Wall Lake