Lake Fort Smith is a mesotrophic lake in Crawford County, Arkansas. Water quality is graded C based on 3 sampling years through 2019. Compared to the 1 other monitored lakes in Crawford County, Lake Fort Smith ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2019-02-05. 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 6.5 ft. Phosphorus level: 24 µg/L. Chlorophyll-a: 5.1 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.5 ft | D |
| Phosphorus | 24 µg/L | B |
| Chlorophyll-a (Algae) | 5.1 µg/L | B |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Lake Fort Smith
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Fishing Lake Fort Smith
Location
County Ranking
Ranked #1 of 2 lakes in Crawford County
Cleaner Lakes Within 30 Miles
Lake Fort Smith holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Crawford County
Explore Lake Fort Smith across LakeGrade
More Arkansas Lake Rankings
Other Grade C Lakes in Arkansas
Mesotrophic 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: 2019-02-05
Monitoring stations: 2