What is the water quality grade for Table Rock Lake?

Table Rock Lake in Barry County, Missouri received a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 30.5 µg/L. Chlorophyll-a (algae): 6.5 µg/L.

Is Table Rock Lake safe to swim in?

Generally safe for swimming, moderate water quality. Table Rock Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 6.5 µg/L. Always check local health department advisories before swimming.

Barry County, Missouri · 36.50°N

Table Rock Lake

Grade CFair · 3.3 ft clarity

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Eutrophic

Table Rock Lake is a productive, nutrient-rich eutrophic lake in Barry County, Missouri. Water quality is graded C based on 3 sampling years through 2024. Overall water quality is improving over recent sampling years. Compared to the 8 other monitored lakes in Barry County, Table Rock Lake ranks #6 for water quality.

Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-18. Grade methodology: LakeGrade methodology.

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Swimming Safety

Generally safe for swimming, moderate water quality

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Water Quality Grade: C, Fair

Very murky, less than 3.3 ft of visibility. Phosphorus level: 30.5 µg/L. Chlorophyll-a: 6.5 µg/L. Trophic State Index: 54.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3.3 ft	D
Phosphorus	30.5 µg/L	C
Chlorophyll-a (Algae)	6.5 µg/L	B
Trophic State Index (TSI)	54	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Table Rock Lake

Compare lakeside cabins, hotels, and vacation rentals near Table Rock Lake in Barry County, Missouri — 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.

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Fishing Table Rock Lake

→ Table Rock Lake fishing regulations (limits, seasons, special rules)

Water Quality Trend: ↑ Improving

Based on 5 years of monitoring data (2020-2025).

Metric	Trend	Change/Year	Years
Water Clarity	↓ Declining	-0.039 m/yr	5
Phosphorus	↑ Improving	-2.18 µg/L/yr	5
Chlorophyll-a	↑ Improving	-0.58 µg/L/yr	5

See year-by-year chart →

Water Temperature

Table Rock Lake averages about 82°F at the surface in summer, usually warmest in Jul (about 84°F) and coldest in Apr (about 59°F). These are typical values by month — not a live reading.