Lake Wallace
Chicot County, ArkansasView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- #4 of 4 in the county
- Public access
- Limited data
Lake Wallace in Chicot County, Arkansas has a water quality grade of F (Algae-prone). Phosphorus: 150 µg/L. Chlorophyll-a (algae): 72.5 µg/L.
- Type
- Hypereutrophic
- Phosphorus
- 150 µg/L
- Chlorophyll-a
- 72.5 µg/L
- Trend
- → Stable
- Public access
- Yes
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Stays near Lake Wallace
Compare lakeside cabins, hotels, and vacation rentals near Lake Wallace 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 grade measures nutrients and algae, not lodging — cabins and rentals around Lake Wallace are listed below.
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Watch Lake Wallace’s letter
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Lake Wallace is a highly nutrient-loaded hypereutrophic lake in Chicot County, Arkansas. Water quality is graded F based on 3 sampling years through 2025. Phosphorus level is declining 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, Lake Wallace ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2025-11-17. Grade methodology: LakeQuality methodology.
What Lake Wallace is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus 150 µg/L. Chlorophyll-a 72.5 µg/L. TSI 75. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 150 µg/L | Poor |
| Chlorophyll-a (Algae) | 72.5 µg/L | Poor |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Recreation & Access
- Lake WallacePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Lake Wallace
Water Quality Trend: → Stable
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +20 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -15.65 µg/L/yr | 3 |
Reservoir Info (USACE NID)
Lake Wallace is a man-made reservoir impounded by the Lake Wallace Dam (completed 1960), built primarily for recreation on the Ni Bayou-Tr; buttress-type dam, 11 ft tall and 125 ft long.
- Normal storage
- 790 ac-ft
- Max storage
- 1,235 ac-ft
- Hazard class
- Low
- Owner
- Arkansas Game and Fish Commission
Source: USACE National Inventory of Dams, NID ID AR00798 · Operator website
County Ranking
Ranked #4 of 4 lakes in Chicot County
Nearby Lakes in Chicot County
Frequently asked questions about Lake Wallace
Where is Lake Wallace?
- Lake Wallace is a lake in Chicot County, Arkansas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Wallace?
- Lake Wallace in Chicot County, Arkansas has a water quality grade of F (Algae-prone). Phosphorus: 150 µg/L. Chlorophyll-a (algae): 72.5 µg/L.
Is Lake Wallace safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Lake Wallace?
- Lake Wallace has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Wallace. Public access is listed as yes.
Explore Lake Wallace across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Arkansas's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
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More Arkansas Lake Rankings
Other Grade F Lakes in Arkansas
Hypereutrophic Lakes in Arkansas
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory