Lpinelk T Lake
Hardin County, Iowa85 acresView mapDirections
Iowa DNR publishes the water-quality measurements for Lpinelk T Lake. Here is what has been measured.
- Impaired · Algal growth
- Limited data
Lpinelk T Lake in Hardin County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 1.3 ft visibility. Surface area: 85 acres.
Lpinelk T Lake is a 85-acre lake in Hardin County, Iowa. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, Iowa DNR, last sampled 2023-09-27. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria advisory
Nutrient and algae readings are not a swimming clearance. Lpinelk T Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, pathogens (E. coli, fecal). Check local advisories before you swim.
Whether Lpinelk T 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.
Water quality measurements for Lpinelk T Lake
These are the measurements Iowa DNR publishes for Lpinelk T Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1.3 ft of visibility. TSI 73.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading 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. | 73 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Lpinelk T Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
85 acres
No bathymetric survey has been published for Lpinelk T Lake, so its depth is not documented here.
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Fishing Lpinelk T Lake
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Improving-13.8 µg/L/yr4 years
Chlorophyll-a
Worsening+11.78 µg/L/yr5 years
Reservoir Info (USACE NID)
Lpinelk T Lake is a man-made reservoir impounded by the Lower Pine Lake Dam (completed 1922), built primarily for recreation on the PINE CREEK; earth-type dam, 33 ft tall and 450 ft long.
- Surface area
- 85 ac
- Normal storage
- 360 ac-ft
- Max storage
- 924 ac-ft
- Drainage area
- 15.47 sq mi
- Hazard class
- Significant
- Owner
- Iowa Department of Natural Resources
All listed purposes: Recreation;Other.
Source: USACE National Inventory of Dams, NID ID IA01346 · Operator website · Matched by proximity (0.47 km)
EPA Impairment Status
Lpinelk T 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: Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IA 02-IOW-758 · Official waterbody report
Nearby Lakes in Hardin County
Frequently asked questions about Lpinelk T Lake
Where is Lpinelk T Lake?
- Lpinelk T Lake is a lake in Hardin County, Iowa. Its water-quality measurements are published by Iowa DNR and shown on this page as reported.
What is the water quality of Lpinelk T Lake?
- Lpinelk T Lake in Hardin County, Iowa has water-quality measurements published by Iowa DNR, shown here as reported. Water clarity: 1.3 ft visibility. Surface area: 85 acres.
Is Lpinelk T Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lpinelk T Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, pathogens (E. coli, fecal). Check local advisories before you swim.
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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)
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