Lake Ogallala is a productive, nutrient-rich eutrophic lake in Keith County, Nebraska. Water quality is graded C based on 2 sampling years through 2024. Compared to the 1 other monitored lakes in Keith County, Lake Ogallala ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Nebraska DNR, last sampled 2024-09-17. 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 4.9 ft. Phosphorus level: 52.2 µg/L. Chlorophyll-a: 14.2 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | D |
| Phosphorus | 52.2 µg/L | C |
| Chlorophyll-a (Algae) | 14.2 µg/L | C |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Ogallala
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Fishing Lake Ogallala
Location
County Ranking
Ranked #2 of 2 lakes in Keith County
Cleaner Lakes Within 30 Miles
Lake Ogallala holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Keith County
Explore Lake Ogallala across LakeGrade
More Nebraska Lake Rankings
Other Grade C Lakes in Nebraska
Eutrophic Lakes in Nebraska
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: 2024-09-17
Monitoring stations: 1