Lake Gladewater is a productive, nutrient-rich eutrophic lake in Upshur County, Texas. Water quality is graded C based on 2 sampling years through 2025. Compared to the 1 other monitored lakes in Upshur County, Lake Gladewater ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-09-03. Grade methodology: LakeGrade methodology.
Watch Lake Gladewater water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Very murky, less than 3 ft of visibility. Phosphorus level: 35 µg/L. Chlorophyll-a: 28.2 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | F |
| Phosphorus | 35 µg/L | C |
| Chlorophyll-a (Algae) | 28.2 µg/L | D |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Gladewater
Compare lakeside cabins, hotels, and vacation rentals near Lake Gladewater in Upshur County, Texas — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Gladewater
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Lake Gladewater?
Get lake water-quality report cards plus the best cabin & lodging deals near Lake Gladewater — straight to your inbox. No spam, unsubscribe anytime.
Fishing Lake Gladewater
Location
County Ranking
Ranked #1 of 2 lakes in Upshur County
Cleaner Lakes Within 30 Miles
Lake Gladewater holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Upshur County
Explore Lake Gladewater across LakeGrade
More Texas Lake Rankings
Other Grade C Lakes in Texas
Eutrophic Lakes in Texas
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: 2025-09-03
Monitoring stations: 1