Lewisville Lake
Denton County, Texas23,280 acresView mapDirections
TCEQ publishes the water-quality measurements for Lewisville Lake. Here is what has been measured.
- Eutrophic
- Public access
Lewisville Lake in Denton County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 1.8 ft visibility. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 26.8 µg/L. Surface area: 23280 acres.
Lewisville Lake is a 23,280-acre productive, nutrient-rich eutrophic lake in Denton County, Texas. Limited fish-species data available. Public access is available with 5 public boat landings. Compared to the 5 other monitored lakes in Denton County, Lewisville Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2026-01-13. Methodology: how these readings are compared.
At about 23,000 acres, Lewisville Lake is large enough that where you stay decides which shore you see most of. It has 5 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 Lewisville Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Lewisville Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch5 documented ramps
- Camping1 public campground nearby
- Big water23,280 acres
Swimming conditions
Readings onlyAlgae risk
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 Lewisville Lake is safe to swim in today is a call for the Texas Commission on Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lewisville Lake
These are the measurements TCEQ publishes for Lewisville Lake, 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 1.8 ft of visibility. Phosphorus 43 µg/L. Chlorophyll-a 26.8 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 1.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 43µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 26.8µg/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. | 63 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lewisville Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
23,280 acres
Public access
Yes
Listed by TCEQ
No bathymetric survey has been published for Lewisville Lake, so its depth is not documented here.
Recreation & Access
- Tower Bay ParkPublic
- Lewisville City ParkPublic
- Lewisville City ParkPublic
- Oakland ParkPublic
- Eagle Point MarinaSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Public campgrounds near Lewisville Lake
- Westlake Day Use1.4 kmReserve
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Lewisville Lake
Compare lakeside cabins, hotels, and vacation rentals near Lewisville Lake in Denton County, Texas — 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 Lewisville Lake are listed below.
Top-rated places to stay near Lewisville 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 Lewisville Lake → · more Texas lake trips
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Fishing Lewisville Lake
Water Quality Trend: Stable
Based on 4 years of monitoring (2020–2023).
Water clarity
Stable4 years
Phosphorus
Stable-0.55 µg/L/yr4 years
Reservoir Info (USACE NID)
Lewisville Lake is a man-made reservoir impounded by the Lewisville Dam (completed 1955), built primarily for flood risk reduction on the Elm Fork of The Trinity River; earth-type dam, 135 ft tall and 32,328 ft long.
- Surface area
- 23,280 ac
- Normal storage
- 618,400 ac-ft
- Max storage
- 1,804,300 ac-ft
- Drainage area
- 1,660 sq mi
- Hazard class
- High
- Owner
- USACE - Fort Worth District
All listed purposes: Flood Risk Reduction;Fish and Wildlife Pond;Recreation;Hydroelectric;Water Supply.
Source: USACE National Inventory of Dams, NID ID TX00008 · Operator website
Nearby Lakes in Denton County
Frequently asked questions about Lewisville Lake
Where is Lewisville Lake?
- Lewisville Lake is a lake in Denton County, Texas. Its water-quality measurements are published by TCEQ and shown on this page as reported.
What is the water quality of Lewisville Lake?
- Lewisville Lake in Denton County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 1.8 ft visibility. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 26.8 µg/L. Surface area: 23280 acres.
Is Lewisville Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Lewisville Lake?
- Lewisville Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Tower Bay Park, Lewisville City Park, Lewisville City Park, Oakland Park, among others. Public access is listed as yes.
Can I fish at Lewisville Lake?
- Lewisville Lake has 5 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Texas's fish and wildlife agency, so check its current regulations before you go.
Are there campgrounds on Lewisville Lake?
- Lewisville Lake has 1 public campground from USGS The National Map within 5 km, including Westlake Day Use. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Lewisville Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
4.6 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
Where to stay at Texas's top lakes, each with its readings
Texas's cleanest lakes, ranked on agency measurements
More lakes in Texas
Other Lakes in Texas
Eutrophic Lakes in Texas
Where this data comes from
1,060 measurements from 19 monitoring stations, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Texas Water Science Center
USGS-TX1,021 samples · 2020–2024 - Texas Commission on Environmental Quality
TCEQMAIN39 samples · 2021–2026
Monitoring station identifiers (19)
- USGS-330606097014201
- USGS-330456096555901
- USGS-330741096555200
- USGS-330736097005600
- USGS-330822097000901
- USGS-330654097002200
- USGS-330437096552700
- USGS-330514097010400
- USGS-330419096575401
- USGS-330930096570200
- USGS-331135097021101
- USGS-330404096585000
- USGS-330455096575501
- USGS-331131097010800
- USGS-330548097020500
- USGS-330450096560501
- USGS-330630096575701
- USGS-330557097022301
- TCEQMAIN-11025
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
Named boat-access points from the USGS National Boat Ramps inventory
Public campgrounds from USGS The National Map Structures, within about 3 miles