Waco Lake: 100.0% full as of 2026-04-20

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 2026-04-20 100.0 462.32 190,070 188,891 188,891 8,512
1 day prior 2026-04-19 100.0 462.32 190,070 188,891 188,891 8,512
2 days prior 2026-04-18 100.0 462.33 190,155 188,891 188,891 8,514
1 week prior 2026-04-13 99.5 462.11 188,189 187,963 188,891 8,417
1 month prior 2026-03-20 98.0 461.78 185,421 185,195 188,891 8,361
3 months prior 2026-01-20 97.2 461.60 183,918 183,692 188,891 8,330
6 months prior 2025-10-20 96.9 461.51 183,169 182,943 188,891 8,316
1 year prior 2025-04-20 90.3 459.99 170,728 170,502 188,891 8,035
*

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 2026-04-20 15:15 462.32 462.22 0.10 into flood pool
1 hour prior 2026-04-20 14:15 462.32 462.22 0.10 into flood pool
2 hours prior 2026-04-20 13:15 462.32 462.22 0.10 into flood pool
6 hours prior 2026-04-20 09:15 462.32 462.22 0.10 into flood pool
12 hours prior 2026-04-20 03:15 462.32 462.22 0.10 into flood pool
24 hours prior 2026-04-19 15:15 462.32 462.22 0.10 into flood pool
48 hours prior 2026-04-18 15:15 462.33 462.22 0.11 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1965-01-01
Vertical datum NAVD88
Dead pool elevation 400.22 ft above NAVD88
Service spillway crest elevation 465.22 ft above NAVD88
Top of flood gate elevation 500.22 ft above NAVD88
Emergency spillway crest elevation 500.22 ft above NAVD88
Flood pool elevation 500.22 ft above NAVD88
Maximum design elevation 505.22 ft above NAVD88
Top of dam elevation 510.22 ft above NAVD88
Conservation pool elevation
Start date: 2003-01-01 		462.22 ft above NAVD88
Conservation pool elevation
End date: 2003-01-01 		455.22 ft above NAVD88
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1965-01-01 (source: USGS)
1995-01-01 (source: TWDB) : GIS Data
2011-05-01 (source: TWDB) : GIS Data
2023-12-01 (source: TWDB) : GIS Data
Data Source USGS:08095550
USGS Monitoring Location USGS:08095550

Lake Location