New Olathe Lake is a productive, nutrient-rich eutrophic lake in Johnson County, Kansas. Water quality is graded C based on 2 sampling years through 2018. Compared to the 18 other monitored lakes in Johnson County, New Olathe Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Kansas DNR, last sampled 2018-08-06. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 3.4 ft. Phosphorus level: 29 µg/L. Chlorophyll-a: 10 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | 29 µg/L | C |
| Chlorophyll-a (Algae) | 10 µg/L | C |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near New Olathe Lake
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Fishing New Olathe Lake
Location
County Ranking
Ranked #2 of 19 lakes in Johnson County
Nearby Lakes in Johnson County
Explore New Olathe Lake across LakeGrade
More Kansas Lake Rankings
Other Grade C Lakes in Kansas
Eutrophic Lakes in Kansas
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2018-08-06
Monitoring stations: 1