Iowa Lkt Lake
Iowa County, Iowa92 acresView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Algal growth
- Limited data
Iowa Lkt Lake in Iowa County, Iowa is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.7 ft visibility. Surface area: 92 acres.
- Clarity
- 3.7 ft
- Area
- 92 acres
- Trend
- ↑ Improving
Stays via Stay22
Stays near Iowa Lkt Lake
Compare lakeside cabins, hotels, and vacation rentals near Iowa Lkt Lake in Iowa 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.
Top-rated places to stay near Iowa Lkt Lake
Prices for Sep 11–13, 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 whole trip? See where to stay at Iowa’s top lakes →
Watch Iowa Lkt Lake’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Iowa Lkt Lake has no grade
Iowa Lkt Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Iowa Lkt Lake is Not Rated — not an F. Its 3.7-foot median from 2 readings collected 2023 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by Iowa DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Iowa Lkt Lake is a 92-acre lake in Iowa County, Iowa. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Iowa DNR, last sampled 2023-10-04. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedBacteria advisory
The letter is not a swimming clearance. Iowa Lkt Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, pathogens (E. coli, fecal). Check local advisories before you swim.
Water quality measurements for Iowa Lkt Lake
These readings exist but are not enough for an A–F grade — see why.
Murky, only visible to about 3.7 ft. TSI 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.7 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 92 acres |
No bathymetric survey has been published for Iowa Lkt Lake, so its depth is not documented here.
Fishing Iowa Lkt Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.097 m/yr | 5 |
| Phosphorus | ↑ Improving | -3.2 µg/L/yr | 4 |
| Chlorophyll-a | ↓ Declining | +3.42 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Iowa Lkt Lake is a man-made reservoir impounded by the Lake Iowa Dam (completed 1962), built primarily for recreation on the PIG CREEK; earth-type dam, 40 ft tall and 893 ft long.
- Surface area
- 92 ac
- Normal storage
- 1,110 ac-ft
- Max storage
- 1,950 ac-ft
- Drainage area
- 2.17 sq mi
- Hazard class
- Significant
- Owner
- Iowa County Conservation Board
Source: USACE National Inventory of Dams, NID ID IA00520 · Operator website · Matched by proximity (0.23 km)
EPA Impairment Status
Iowa Lkt Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IA 02-IOW-677 · Official waterbody report · Matched by proximity (0.57 km)
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Iowa Lkt Lake under Clean Water Act (NPDES) discharge permits.
- Millersburg City Of (Poweshiek Water Assn)North English · 4.2 mi away · NPDES IA0077283
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Graded lakes near Iowa Lkt Lake
Iowa Lkt Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Iowa County
Frequently asked questions about Iowa Lkt Lake
Where is Iowa Lkt Lake?
- Iowa Lkt Lake is a lake in Iowa County, Iowa. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Iowa Lkt Lake?
- Iowa Lkt Lake in Iowa County, Iowa is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3.7 ft visibility. Surface area: 92 acres.
Is Iowa Lkt Lake safe to swim in?
- The letter is not a swimming clearance. Iowa Lkt Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, pathogens (E. coli, fecal). Check local advisories before you swim.
Explore Iowa Lkt Lake across LakeQuality
More Iowa Lake Rankings
Other Lakes in Iowa
Eutrophic Lakes in Iowa
Where this data comes from
2 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Iowa DNR Surface Water Monitoring Data
21IOWA_WQX2 samples · 2023
Analytical methods
- Unknown
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)