Inks Lake: 94.5% full as of 2025-09-26

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 2025-09-26 94.5 887.05 13,257 12,974 13,729 778
1 day prior 2025-09-25 94.3 887.02 13,234 12,951 13,729 777
2 days prior 2025-09-24 95.5 887.22 13,391 13,108 13,729 790
1 week prior 2025-09-19 95.2 887.18 13,359 13,076 13,729 790
1 month prior 2025-08-26 96.2 887.34 13,486 13,203 13,729 792
3 months prior 2025-06-26 95.6 887.24 13,407 13,124 13,729 791
6 months prior 2025-03-26 95.9 887.30 13,454 13,171 13,729 792
1 year prior 2024-09-26 94.6 887.06 13,265 12,982 13,729 779
*

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 2025-09-26 23:25 887.03 888.00 -0.97
1 hour prior 2025-09-26 22:25 887.03 888.00 -0.97
2 hours prior 2025-09-26 21:25 887.03 888.00 -0.97
6 hours prior 2025-09-26 17:25 887.04 888.00 -0.96
12 hours prior 2025-09-26 11:25 887.04 888.00 -0.96
24 hours prior 2025-09-25 23:25 887.06 888.00 -0.94
48 hours prior 2025-09-24 23:25 887.02 888.00 -0.98
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1938-01-01
Vertical datum NAVD88 +0.31
Dead pool elevation 844.50 ft above NAVD88 +0.31
Emergency spillway crest elevation 888.32 ft above NAVD88 +0.31
Top of dam elevation 922.00 ft above NAVD88 +0.31
Conservation pool elevation 888.00 ft above NAVD88 +0.31
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2007-04-01 (source: TWDB) : GIS Data
2021-08-01 (source: TWDB) : GIS Data
Data Source LCRA:1999

Lake Location