Gillham Lake is a productive, nutrient-rich eutrophic lake in Howard County, Arkansas. Water quality is graded C based on 3 sampling years through 2019. Compared to the 2 other monitored lakes in Howard County, Gillham Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2019-08-20. 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 5.1 ft. Phosphorus level: 36.5 µg/L. Chlorophyll-a: 14.4 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.1 ft | D |
| Phosphorus | 36.5 µg/L | C |
| Chlorophyll-a (Algae) | 14.4 µg/L | C |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Gillham Lake
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Fishing Gillham Lake
Location
County Ranking
Ranked #3 of 3 lakes in Howard County
Cleaner Lakes Within 30 Miles
Gillham Lake holds Grade C. 2 nearby lakes hold higher grades.
- CNla LakeHoward County · 1.2 mi · Higher overall water quality score
- CLake GreesonPike County · 26.8 mi · Higher overall water quality score
Nearby Lakes in Howard County
Explore Gillham Lake across LakeGrade
More Arkansas Lake Rankings
Other Grade C Lakes in Arkansas
Eutrophic Lakes in Arkansas
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: 2019-08-20
Monitoring stations: 2