What is the water quality grade for Lake Opines?

Lake Opines in Marion County, Texas received a water quality grade of D (Poor). Water clarity: 2 ft visibility. Phosphorus: 50 µg/L. Chlorophyll-a (algae): 59.2 µg/L.

Is Lake Opines safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Lake Opines has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 59.2 µg/L. Always check local health department advisories before swimming.

Marion County, Texas

Lake Opines

Grade DPoor · 2 ft clarity

Find places to stay →

Eutrophic

Lake Opines is a productive, nutrient-rich eutrophic lake in Marion County, Texas. Water quality is graded D based on 2 sampling years through 2025. Compared to the 3 other monitored lakes in Marion County, Lake Opines ranks #3 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2025-09-16. Grade methodology: LakeGrade methodology.

Watch Lake Opines water quality

Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Very murky, less than 2 ft of visibility. Phosphorus level: 50 µg/L. Chlorophyll-a: 59.2 µg/L. Trophic State Index: 66.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2 ft	F
Phosphorus	50 µg/L	C
Chlorophyll-a (Algae)	59.2 µg/L	F
Trophic State Index (TSI)	66	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Lake Opines

Compare lakeside cabins, hotels, and vacation rentals near Lake Opines in Marion 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 Opines