Tomahawk Creek Park Lake
Johnson County, KansasView mapDirections
KDHE publishes the water-quality measurements for Tomahawk Creek Park Lake. Here is what has been measured.
- Hypereutrophic
Tomahawk Creek Park Lake in Johnson County, Kansas has water-quality measurements published by KDHE, shown here as reported. Phosphorus: 162.1 µg/L. Chlorophyll-a (algae): 45.9 µg/L.
Tomahawk Creek Park Lake is a highly nutrient-loaded hypereutrophic lake in Johnson County, Kansas. Phosphorus level is declining over recent sampling years. Compared to the 12 other monitored lakes in Johnson County, Tomahawk Creek Park Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, KDHE, last sampled 2021-09-14. Methodology: how these readings are compared.
Swimming conditions
Readings onlyAlgae risk
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Tomahawk Creek Park Lake is safe to swim in today is a call for the Kansas Department of Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Tomahawk Creek Park Lake
These are the measurements KDHE publishes for Tomahawk Creek Park 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. Phosphorus 162.1 µg/L. Chlorophyll-a 45.9 µg/L. TSI 73.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 162µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 45.9µg/L | Poor GoodFairPoor |
| 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
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Stays via Stay22
Stays near Tomahawk Creek Park Lake
Compare lakeside cabins, hotels, and vacation rentals near Tomahawk Creek Park Lake in Johnson County, Kansas — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Tomahawk Creek Park Lake are listed below.
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Fishing Tomahawk Creek Park Lake
Water Quality Trend: Stable
Based on 9 years of monitoring (2012–2021).
Phosphorus
Worsening+32.38 µg/L/yr9 years
Chlorophyll-a
Improving-5.55 µg/L/yr9 years
Nearby Lakes in Johnson County
Frequently asked questions about Tomahawk Creek Park Lake
Where is Tomahawk Creek Park Lake?
- Tomahawk Creek Park Lake is a lake in Johnson County, Kansas. Its water-quality measurements are published by KDHE and shown on this page as reported.
What is the water quality of Tomahawk Creek Park Lake?
- Tomahawk Creek Park Lake in Johnson County, Kansas has water-quality measurements published by KDHE, shown here as reported. Phosphorus: 162.1 µg/L. Chlorophyll-a (algae): 45.9 µg/L.
Is Tomahawk Creek Park Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Tomahawk Creek Park Lake across LakeQuality
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Hypereutrophic Lakes in Kansas
Where this data comes from
157 measurements from 3 monitoring stations, 2012–2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- EPA R7
EPA_R7_WQX157 samples · 2012–2021
Analytical methods
- Nutrient Analysis
- Chlorophyll a
- Fluorometric Analysis of Chlorophyll a (originally 2334.22A)
Monitoring station identifiers (3)
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.