Mallard Lake is a productive, nutrient-rich eutrophic lake in Morton County, Kansas. Water quality is graded D based on 2 sampling years through 2014. Compared to the 1 other monitored lakes in Morton County, Mallard Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Kansas DNR, last sampled 2014-06-16. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Very murky, less than 1.5 ft of visibility. Phosphorus level: 145 µg/L. Chlorophyll-a: 11.4 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.5 ft | F |
| Phosphorus | 145 µg/L | F |
| Chlorophyll-a (Algae) | 11.4 µg/L | C |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Mallard Lake
Location
County Ranking
Ranked #2 of 2 lakes in Morton County
Nearby Lakes in Morton County
Explore Mallard Lake across LakeGrade
More Kansas Lake Rankings
Other Grade D 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: 2014-06-16
Monitoring stations: 1