What is the water quality grade for Muddy Guard Reservoir?

Muddy Guard Reservoir in Johnson County, Wyoming received a water quality grade of B (Good). Water clarity: 15.2 ft visibility. Phosphorus: 30 µg/L.

Is Muddy Guard Reservoir safe to swim in?

Good for swimming, clear water with low algae levels. Muddy Guard Reservoir has an overall water quality grade of B. Always check local health department advisories before swimming.

Johnson County, Wyoming

Muddy Guard Reservoir

Grade BGood · 15.2 ft clarity

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Mesotrophic

Muddy Guard Reservoir is a mesotrophic lake in Johnson County, Wyoming. Water quality is graded B based on 2 sampling years through 2019. Compared to the 7 other monitored lakes in Johnson County, Muddy Guard Reservoir ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, Wyoming DNR, last sampled 2019-09-11. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Crystal clear, you can see 15.2 ft down. Phosphorus level: 30 µg/L. Trophic State Index: 46.

Metric	Value	Grade
Water Clarity (Secchi Depth)	15.2 ft	A
Phosphorus	30 µg/L	C
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	46	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Muddy Guard Reservoir

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