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LakeQuality

Lake Sherwood

Sharp County, Arkansas66 acresView mapDirections

Arkansas DEQ publishes the water-quality measurements for Lake Sherwood. Here is what has been measured.

Phosphorus
20 µg/L
Typical for Arkansas
Measured by Arkansas DEQ
Chlorophyll-a
3.2 µg/L
Less algae than most
Measured by Arkansas DEQ
Max depth
~33 ft est.
GLOBathy model
Area
66 acres
Surface area
  • 33 ft max depth
  • Limited data

Lake Sherwood in Sharp County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 66 acres.

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Lake Sherwood is a 66-acre lake in Sharp County, Arkansas with an estimated average depth of about 33 feet.

Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2012-10-02. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Lake Sherwood is safe to swim in today is a call for the Arkansas Division of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lake Sherwood

These are the measurements Arkansas DEQ publishes for Lake Sherwood, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. Phosphorus 20 µg/L. Chlorophyll-a 3.2 µg/L. TSI 45.

Water quality readings
MeasureReadingWhere it sits
Water clarity (Secchi depth)No reading

How deep a black-and-white disk stays visible from the surface. Higher is clearer.

Total phosphorus20µg/LMeasured, not scored

The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.

Chlorophyll-a (algae)3.2µg/LMeasured, not scored

The green pigment in algae — a direct measure of how much algae is in the water.

Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a.45Mesotrophic
OligotrophicMesotrophicEutrophicHypereutrophic

Moderate nutrients, good water quality

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Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

~33 ft est.

Surface area

66 acres

Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Arkansas has not published bathymetry for Lake Sherwood.

Lake Size & Watershed

Watershed (drainage) area

10 sq mi

HydroLAKES / HydroSHEDS

Shoreline

2 mi

HydroLAKES / HydroSHEDS

Elevation

420 ft

Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.

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Stays near Lake Sherwood

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Fishing Lake Sherwood

Reservoir Info (USACE NID)

Lake Sherwood is a man-made reservoir impounded by the Sherwood Lake Dam (completed 1963), built primarily for recreation on the 40-Island Creek; earth-type dam, 51 ft tall and 1,026 ft long.

Surface area
66 ac
Normal storage
1,500 ac-ft
Max storage
2,023 ac-ft
Drainage area
8.6 sq mi
Hazard class
High
Owner
Woodland Hills Property Owners Association, Inc.

Source: USACE National Inventory of Dams, NID ID AR00255 · Operator website

Nearby Lakes in Sharp County

Frequently asked questions about Lake Sherwood

Where is Lake Sherwood?

Lake Sherwood is a lake in Sharp County, Arkansas. Its water-quality measurements are published by Arkansas DEQ and shown on this page as reported.

What is the water quality of Lake Sherwood?

Lake Sherwood in Sharp County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Phosphorus: 20 µg/L. Chlorophyll-a (algae): 3.2 µg/L. Surface area: 66 acres.

Measurements on this page ↑

Is Lake Sherwood safe to swim in?

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Swimming on this page ↑

How deep is Lake Sherwood?

No published bathymetric survey covers Lake Sherwood, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 33 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 66 acres.

Where this data comes from

4 measurements from 1 monitoring station, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.

Collected and reported by

  • Arkansas Department of Environmental QualityARDEQH2O_WQX4 samples · 2012

Analytical methods

  • 4500 P J ~ Persulfate Method for Simultaneous Determination of Total Nitrogen and Total Phosphorus
  • 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
Monitoring station identifiers (1)

EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.

Other records on this page

Lake size & watershed from HydroLAKES (HydroSHEDS)