Grand Lake
Chicot County, ArkansasView mapDirections
Arkansas DEQ publishes the water-quality measurements for Grand Lake. Here is what has been measured.
- Hypereutrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- 29 ft max depth
- Public access
- Limited data
Grand Lake in Chicot County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Phosphorus: 300 µg/L. Chlorophyll-a (algae): 115.5 µg/L.
Grand Lake is a highly nutrient-loaded hypereutrophic lake in Chicot County, Arkansas with an estimated average depth of about 29 feet. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 3 other monitored lakes in Chicot County, Grand Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2025-11-17. Methodology: how these readings are compared.
Grand Lake has one public boat landing. Vrbo is where to look for cabins and lake homes around Grand Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Grand Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Grand Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Grand Lake 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.
Water quality measurements for Grand Lake
These are the measurements Arkansas DEQ publishes for Grand Lake, 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 300 µg/L. Chlorophyll-a 115.5 µg/L. TSI 82.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 300µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 116µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 82 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Grand Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~29 ft est.
Public access
Yes
Listed by Arkansas DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Arkansas has not published bathymetry for Grand Lake.
Lake Size & Watershed
Watershed (drainage) area
10 sq mi
HydroLAKES / HydroSHEDS
Surface area
1,082 acres
HydroLAKES / HydroSHEDS
Shoreline
8 mi
HydroLAKES / HydroSHEDS
Elevation
105 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.
Recreation & Access
Stays via Stay22
Stays near Grand Lake
Compare lakeside cabins, hotels, and vacation rentals near Grand Lake in Chicot County, Arkansas — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Grand Lake are listed below.
Top-rated places to stay near Grand Lake
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Grand Lake → · more Arkansas lake trips
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Fishing Grand Lake
Water quality readings over time
3 seasons of samples on record (2023–2025). Calling a direction takes at least 4 years of the same measurement.
Phosphorus
Improving-180 µg/L/yr2 years
Chlorophyll-a
Improving-33.2 µg/L/yr3 years
EPA Impairment Status
Grand Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit AR_08050002_4020 · Official waterbody report
Nearby Lakes in Chicot County
Frequently asked questions about Grand Lake
Where is Grand Lake?
- Grand Lake is a lake in Chicot County, Arkansas. Its water-quality measurements are published by Arkansas DEQ and shown on this page as reported.
What is the water quality of Grand Lake?
- Grand Lake in Chicot County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Phosphorus: 300 µg/L. Chlorophyll-a (algae): 115.5 µg/L.
Is Grand Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Grand Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Grand Lake?
- No published bathymetric survey covers Grand Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 29 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Grand Lake?
- Grand Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Public access is listed as yes.
Can I fish at Grand Lake?
- Grand Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Arkansas's fish and wildlife agency, so check its current regulations before you go.
Explore Grand Lake across LakeQuality
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Where this data comes from
33 measurements from 1 monitoring station, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Arkansas Department of Environmental Quality
ARDEQH2O_WQX33 samples · 2023–2025
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
- Turbidity by Nephelometry
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory