Bois d'Arc Lake: 95.1% full as of 2025-08-29

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Historical Data

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Most recent 2025-08-29 95.1 532.88 349,609 349,609 367,609 16,042
1 day prior 2025-08-28 95.1 532.89 349,770 349,770 367,609 16,046
2 days prior 2025-08-27 95.3 532.93 350,412 350,412 367,609 16,063
1 week prior 2025-08-22 96.1 533.11 353,305 353,305 367,609 16,141
1 month prior 2025-07-29 98.5 533.65 361,984 361,984 367,609 16,375
3 months prior 2025-05-29 100.0 534.48 375,778 367,609 367,609 16,745
6 months prior 2025-02-28 87.2 531.10 320,663 320,663 367,609 15,239
1 year prior 2024-08-29 92.6 532.30 340,287 340,287 367,609 15,791
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft)
Conservation Pool Elevation
(ft)
Height Above Conservation Pool
(ft)
Most recent 2025-08-29 23:45 532.90 534.00 -1.10
1 hour prior 2025-08-29 22:45 532.88 534.00 -1.12
2 hours prior 2025-08-29 21:45 532.88 534.00 -1.12
6 hours prior 2025-08-29 17:45 532.90 534.00 -1.10
12 hours prior 2025-08-29 11:45 532.86 534.00 -1.14
24 hours prior 2025-08-28 23:45 532.88 534.00 -1.12
48 hours prior 2025-08-27 23:45 532.89 534.00 -1.11
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 2021-04-14
Vertical datum NAVD88
Service spillway crest elevation 534.00 ft above NAVD88
Emergency spillway crest elevation 540.00 ft above NAVD88
Maximum design elevation 550.00 ft above NAVD88
Top of dam elevation 553.00 ft above NAVD88
Conservation pool elevation 534.00 ft above NAVD88
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2021-04-14 (source: NTMWD)
Data Source USGS:07332621

Lake Location