Waco Lake: 99.2% full as of 2025-05-30

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)
Today 2025-05-30 99.2 462.03 187,530 187,305 188,736 8,405
Yesterday 2025-05-29 99.1 462.00 187,278 187,053 188,736 8,401
2 days ago 2025-05-28 98.8 461.94 186,774 186,549 188,736 8,390
1 week ago 2025-05-23 97.4 461.61 184,015 183,790 188,736 8,332
1 month ago 2025-04-30 93.6 460.74 176,827 176,602 188,736 8,188
3 months ago 2025-02-28 91.9 460.36 173,729 173,504 188,736 8,115
6 months ago 2024-11-30 90.4 460.00 170,821 170,596 188,736 8,038
1 year ago 2024-05-30 100.0 472.90 294,684 188,736 188,736 11,437
*

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 2025-05-30 12:15 462.07 462.20 -0.13 below flood pool
1 hour prior 2025-05-30 11:15 462.06 462.20 -0.14 below flood pool
2 hours prior 2025-05-30 10:15 462.05 462.20 -0.15 below flood pool
6 hours prior 2025-05-30 06:15 462.04 462.20 -0.16 below flood pool
12 hours prior 2025-05-30 00:15 462.01 462.20 -0.19 below flood pool
24 hours prior 2025-05-29 12:15 462.00 462.20 -0.20 below flood pool
48 hours prior 2025-05-28 12:15 461.95 462.20 -0.25 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1965-01-01
Vertical datum NAVD88
Dead pool elevation 400.20 ft above NAVD88
Service spillway crest elevation 465.00 ft above NGVD29
Top of flood gate elevation 500.00 ft above NGVD29
Emergency spillway crest elevation 500.00 ft above NGVD29
Flood pool elevation 500.00 ft above NGVD29
Maximum design elevation 505.00 ft above NGVD29
Top of dam elevation 510.00 ft above NGVD29
Conservation pool elevation
Start date: 2003-01-01 		462.20 ft above NAVD88
Conservation pool elevation
End date: 2003-01-01 		455.20 ft above NAVD88
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

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

Lake Location