Bois D'Arc Lake
Fannin County, Texas16,500 acresView mapDirections
TCEQ publishes the water-quality measurements for Bois D'Arc Lake. Here is what has been measured.
- Eutrophic
- Limited data
Bois D'Arc Lake in Fannin County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 42 µg/L. Surface area: 16500 acres.
Bois D'Arc Lake is a 16,500-acre productive, nutrient-rich eutrophic lake in Fannin County, Texas. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2023-11-15. Methodology: how these readings are compared.
At about 17,000 acres, Bois D'Arc Lake is large enough that where you stay decides which shore you see most of. For a place on the water, look through cabin and lake-house rentals near Bois D'Arc Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Bois D'Arc Lake is good for
From access and monitoring records, not editorial picks.
- Big water16,500 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 Bois D'Arc 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 Bois D'Arc Lake
These are the measurements TCEQ publishes for Bois D'Arc 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 2.4 ft of visibility. Phosphorus 42 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 42µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Bois D'Arc Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
16,500 acres
No bathymetric survey has been published for Bois D'Arc Lake, so its depth is not documented here.
Stays via Stay22
Stays near Bois D'Arc Lake
Compare lakeside cabins, hotels, and vacation rentals near Bois D'Arc Lake in Fannin 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.
Top-rated places to stay near Bois D'Arc Lake
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Fishing Bois D'Arc Lake
Water quality readings over time
2 seasons of samples on record (2022–2023). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
Reservoir Info (USACE NID)
Bois D'Arc Lake is a man-made reservoir impounded by the Bois D Arc Lake Dam (completed 2023) on the Bois D'Arc Creek; earth-type dam, 90 ft tall and 11,200 ft long.
- Surface area
- 16,500 ac
- Normal storage
- 367,600 ac-ft
- Max storage
- 765,340 ac-ft
- Drainage area
- 327 sq mi
- Hazard class
- High
- Owner
- NORTH TEXAS MUNICIPAL WATER DISTRICT
Source: USACE National Inventory of Dams, NID ID TX07507 · Operator website
Nearby Lakes in Fannin County
Frequently asked questions about Bois D'Arc Lake
Where is Bois D'Arc Lake?
- Bois D'Arc Lake is a lake in Fannin County, Texas. Its water-quality measurements are published by TCEQ and shown on this page as reported.
What is the water quality of Bois D'Arc Lake?
- Bois D'Arc Lake in Fannin County, Texas has water-quality measurements published by TCEQ, shown here as reported. Water clarity: 2.4 ft visibility. Phosphorus: 42 µg/L. Surface area: 16500 acres.
Is Bois D'Arc Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
58 measurements from 3 monitoring stations, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Texas Water Science Center
USGS-TX58 samples · 2021–2023
Monitoring station identifiers (3)
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.