Lewisville Lake: 77.6% full as of 2023-10-03

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 2023-10-03 77.6 517.02 472,514 436,840 563,228 23,572
1 day prior 2023-10-02 77.8 517.07 473,694 438,020 563,228 23,614
2 days prior 2023-10-01 78.0 517.13 475,112 439,438 563,228 23,663
1 week prior 2023-09-26 78.7 517.30 479,146 443,472 563,228 23,806
1 month prior 2023-09-03 82.8 518.24 501,879 466,205 563,228 24,547
3 months prior 2023-07-03 95.4 521.03 573,027 537,353 563,228 26,359
6 months prior 2023-04-03 100.0 522.24 605,404 563,228 563,228 - n.a. -
1 year prior 2022-10-03 79.6 517.51 484,164 448,490 563,228 23,977
*

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 2023-10-04 04:15 516.99 522.00 -5.01 below flood pool
1 hour prior 2023-10-04 03:15 516.98 522.00 -5.02 below flood pool
2 hours prior 2023-10-04 02:15 516.97 522.00 -5.03 below flood pool
6 hours prior 2023-10-03 22:15 516.99 522.00 -5.01 below flood pool
12 hours prior 2023-10-03 16:15 516.98 522.00 -5.02 below flood pool
24 hours prior 2023-10-03 04:15 517.05 522.00 -4.95 below flood pool
48 hours prior 2023-10-02 04:15 517.10 522.00 -4.90 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1955-01-01
Gauge USGS:08052800
Vertical datum NGVD29
Dead pool elevation 481.00 ft above NGVD29
Emergency spillway crest elevation 532.00 ft above NGVD29
Flood pool elevation 532.00 ft above NGVD29
Maximum design elevation 552.14 ft above NGVD29
Maximum design elevation 553.00 ft above NGVD29
Top of dam elevation 560.00 ft above NGVD29
Conservation pool elevation 522.00 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2007-09-01 (source: TWDB) : GIS Data

Lake Location