Lavon Lake
Collin County, Texas21,400 acresView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- #2 of 2 in the county
- Public access
Lavon Lake in Collin County, Texas has a water quality grade of F (Algae-prone). Water clarity: 1.4 ft visibility. Phosphorus: 106.5 µg/L. Chlorophyll-a (algae): 48 µg/L. Surface area: 21400 acres.
- Clarity
- 1.4 ft
- Area
- 21,400 acres
- Type
- Hypereutrophic
- Phosphorus
- 106.5 µg/L
- Chlorophyll-a
- 48 µg/L
- Public access
- Yes
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Stays near Lavon Lake
Compare lakeside cabins, hotels, and vacation rentals near Lavon Lake in Collin 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 grade measures nutrients and algae, not lodging — cabins and rentals around Lavon Lake are listed below.
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Watch Lavon Lake’s letter
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Lavon Lake is a 21,400-acre highly nutrient-loaded hypereutrophic lake in Collin County, Texas. Water quality is graded F based on 2 sampling years through 2023. Limited fish-species data available. Public access is available with 7 public boat landings. Compared to the 1 other monitored lakes in Collin County, Lavon Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2023-10-05. Grade methodology: LakeQuality methodology.
What Lavon Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch7 documented ramps
- Big water21,400 acres
Swimming Safety
Grade onlyAlgae risk
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)
Very murky, less than 1.4 ft of visibility. Phosphorus 106.5 µg/L. Chlorophyll-a 48 µg/L. TSI 71. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.4 ft | Not graded |
| Phosphorus | 106.5 µg/L | Poor |
| Chlorophyll-a (Algae) | 48 µg/L | Poor |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 21,400 acres |
| Public Access | Yes |
No bathymetric survey has been published for Lavon Lake, so its depth is not documented here.
Recreation & Access
- Mallard ParkPublic
- Elm Creek ParkPublic
- Caddo ParkPublic
- Highland ParkPublic
- Brockdale ParkPublic
- Twin GrovesPublic
Showing 6 of 7 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
Fishing Lavon Lake
Reservoir Info (USACE NID)
Lavon Lake is a man-made reservoir impounded by the Lavon Dam (completed 1952), built primarily for flood risk reduction on the East Fork of Trinity River; earth-type dam, 81 ft tall and 19,493 ft long.
- Surface area
- 21,400 ac
- Normal storage
- 456,500 ac-ft
- Max storage
- 1,020,500 ac-ft
- Drainage area
- 770 sq mi
- Hazard class
- High
- Owner
- USACE - Fort Worth District
All listed purposes: Flood Risk Reduction;Fish and Wildlife Pond;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID TX00007 · Operator website
County Ranking
Ranked #2 of 2 lakes in Collin County
Nearby Lakes With Higher Grades
Lavon Lake holds Grade F. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Collin County
Frequently asked questions about Lavon Lake
Where is Lavon Lake?
- Lavon Lake is a lake in Collin County, Texas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lavon Lake?
- Lavon Lake in Collin County, Texas has a water quality grade of F (Algae-prone). Water clarity: 1.4 ft visibility. Phosphorus: 106.5 µg/L. Chlorophyll-a (algae): 48 µg/L. Surface area: 21400 acres.
Is Lavon Lake 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 Lavon Lake?
- Lavon Lake has 7 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Mallard Park, Elm Creek Park, Caddo Park, Highland Park, among others. Public access is listed as yes.
Explore Lavon Lake across LakeQuality
More Texas Lake Rankings
Other Grade F Lakes in Texas
Hypereutrophic Lakes in Texas
Where this data comes from
167 measurements from 9 monitoring stations, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Texas Water Science Center
USGS-TX167 samples · 2020–2023
Monitoring station identifiers (9)
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