Lake Millwood
Little River County, Arkansas29,000 acresView mapDirections
Arkansas DEQ publishes the water-quality measurements for Lake Millwood. Here is what has been measured.
- Eutrophic
- 78 ft max depth
- Public access
- Limited data
Lake Millwood in Little River County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 90 µg/L. Chlorophyll-a (algae): 29.6 µg/L. Surface area: 29000 acres.
Lake Millwood is a 29,000-acre productive, nutrient-rich eutrophic lake in Little River County, Arkansas with an estimated average depth of about 78 feet. Limited fish-species data available. Public access is available with 15 public boat landings.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2019-08-19. Methodology: how these readings are compared.
At about 29,000 acres, Lake Millwood is large enough that where you stay decides which shore you see most of. It has 15 public boat landings, so a lakefront rental is not the only way to get a boat on the water. For a place on the water, look through cabin and lake-house rentals near Lake Millwood on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Lake Millwood is good for
From access and monitoring records, not editorial picks.
- Boat launch15 documented ramps
- Big water29,000 acres
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. Check local advisories before you swim.
Whether Lake Millwood 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 Lake Millwood
These are the measurements Arkansas DEQ publishes for Lake Millwood, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 1 ft of visibility. Phosphorus 90 µg/L. Chlorophyll-a 29.6 µg/L. TSI 70.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 90µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | 29.6µg/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. | 70 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Millwood
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~78 ft est.
Surface area
29,000 acres
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 Lake Millwood.
Lake Size & Watershed
Watershed (drainage) area
4,114 sq mi
HydroLAKES / HydroSHEDS
Shoreline
54.5 mi
HydroLAKES / HydroSHEDS
Elevation
266 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
- PeytonPublic
- White CliffsPublic
- Millwood State ParkPublic
- Millwood Dam Tailwaters (East)Public
- Millwood Dam Tailwaters (West)Public
- YarboroughPublic
Showing 6 of 15 documented landings from the USGS National Boat Ramps inventory.
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Millwood
Compare lakeside cabins, hotels, and vacation rentals near Lake Millwood in Little River 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 Lake Millwood are listed below.
Top-rated places to stay near Lake Millwood
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 Lake Millwood → · more Arkansas lake trips
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Fishing Lake Millwood
Reservoir Info (USACE NID)
Lake Millwood is a man-made reservoir impounded by the Millwood Dam (completed 1966), built primarily for flood risk reduction on the Little; concrete-type dam, 88 ft tall and 14,500 ft long.
- Surface area
- 29,000 ac
- Normal storage
- 172,000 ac-ft
- Max storage
- 1,854,930 ac-ft
- Drainage area
- 4,144 sq mi
- Hazard class
- High
- Owner
- USACE - Little Rock District
All listed purposes: Flood Risk Reduction;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID AR00536 · Operator website
Nearby Lakes in Little River County
Frequently asked questions about Lake Millwood
Where is Lake Millwood?
- Lake Millwood is a lake in Little River 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 Millwood?
- Lake Millwood in Little River County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 1 ft visibility. Phosphorus: 90 µg/L. Chlorophyll-a (algae): 29.6 µg/L. Surface area: 29000 acres.
Is Lake Millwood safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Millwood?
- No published bathymetric survey covers Lake Millwood, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 78 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 29000 acres.
Are there boat ramps on Lake Millwood?
- Lake Millwood has 15 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Peyton, White Cliffs, Millwood State Park, Millwood Dam Tailwaters (East), among others. Public access is listed as yes.
Can I fish at Lake Millwood?
- Lake Millwood has 15 documented boat landings 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 Lake Millwood across LakeQuality
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Where this data comes from
189 measurements from 2 monitoring stations, 2012–2019. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Arkansas Department of Environmental Quality
ARDEQH2O_WQX189 samples · 2012–2019
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 (2)
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)
Named boat-access points from the USGS National Boat Ramps inventory