What is the water quality grade for Canyon Lake Headwaters?

Canyon Lake Headwaters in Comal County, Texas received a water quality grade of A (Excellent). Water clarity: 4.6 ft visibility. Chlorophyll-a (algae): 2.3 µg/L.

Is Canyon Lake Headwaters safe to swim in?

Excellent for swimming, crystal clear water with minimal algae. Canyon Lake Headwaters has an overall water quality grade of A. Algae concentration (chlorophyll-a) is 2.3 µg/L. Always check local health department advisories before swimming.

Comal County, Texas

Canyon Lake Headwaters

Grade AExcellent · 4.6 ft clarity

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Limited DataMesotrophic

Canyon Lake Headwaters is a mesotrophic lake in Comal County, Texas. Water quality is graded A based on 1 sampling years through 2026. Compared to the 2 other monitored lakes in Comal County, Canyon Lake Headwaters ranks #1 for water quality.

Source: EPA Water Quality Portal sampling records, Texas DNR, last sampled 2026-04-01. Grade methodology: LakeGrade methodology.

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Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Murky, only visible to about 4.6 ft. Chlorophyll-a: 2.3 µg/L. Trophic State Index: 47.

Metric	Value	Grade
Water Clarity (Secchi Depth)	4.6 ft	D
Phosphorus	No data
Chlorophyll-a (Algae)	2.3 µg/L	A
Trophic State Index (TSI)	47	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Canyon Lake Headwaters

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