Newcastle Reservoir Midway is a productive, nutrient-rich eutrophic lake in Iron County, Utah. Water quality is graded D based on 2 sampling years through 2020. Compared to the 7 other monitored lakes in Iron County, Newcastle Reservoir Midway ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Utah DNR, last sampled 2020-07-28. 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
Moderate clarity, visible to about 9.2 ft. Chlorophyll-a: 46 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.2 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 46 µg/L | F |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Newcastle Reservoir Midway
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Top-rated places to stay near Newcastle Reservoir Midway
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Fishing Newcastle Reservoir Midway
Location
County Ranking
Ranked #7 of 8 lakes in Iron County
Cleaner Lakes Within 30 Miles
Newcastle Reservoir Midway holds Grade D. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Iron County
Explore Newcastle Reservoir Midway across LakeGrade
More Utah Lake Rankings
Other Grade D Lakes in Utah
Eutrophic Lakes in Utah
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: 2020-07-28
Monitoring stations: 1