Falcon Reservoir: 12.3% full as of 2024-04-26

Lake Falcon straddles the border of Texas and Mexico. By treaty, Texas has rights 58.6% of the total conservation capacity. The fraction of the actual storage that belongs to Texas is formally determined biweekly by the International Boundary Water Commission (IBWC). The IBWC is the legal repository of data related to this lake for treaty purposes and official versions of the datasets should be obtained directly from them. Conservation capacity is based on 58.6% of total conservation capacity. Conservation storage is based on the bi-weekly changing Texas share.

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 2024-04-26 12.3 262.31 490,641 191,603 1,562,367 29,430
Yesterday 2024-04-25 11.6 262.59 498,981 181,004 1,562,367 29,728
2 days ago 2024-04-24 11.8 262.95 510,015 185,007 1,562,367 30,079
1 week ago 2024-04-19 13.1 264.69 563,804 204,520 1,562,367 31,911
1 month ago 2024-03-26 15.9 268.34 689,162 248,769 1,562,367 36,758
3 months ago 2024-01-26 16.9 261.36 463,357 263,338 1,562,367 28,349
6 months ago 2023-10-26 10.1 258.17 379,329 157,422 1,562,367 24,407
1 year ago 2023-04-26 23.0 263.86 565,240 356,051 1,551,007 31,782
*

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 2024-04-26 20:15 262.14 301.20 -39.06
1 hour prior 2024-04-26 19:15 262.17 301.20 -39.03
2 hours prior 2024-04-26 18:15 262.17 301.20 -39.03
6 hours prior 2024-04-26 14:15 262.23 301.20 -38.97
12 hours prior 2024-04-26 08:15 262.34 301.20 -38.86
24 hours prior 2024-04-25 20:15 262.45 301.20 -38.75
48 hours prior 2024-04-24 20:15 262.81 301.20 -38.39
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1954-01-01
Vertical datum NGVD29
Dead pool elevation 204.34 ft above NGVD29
Spillway crest elevation 256.70 ft above NGVD29
Volume under conservation pool elevation
End date: 2023-09-30 		2,646,817.00 ac-ft
Volume under conservation pool elevation
Start date: 2023-10-01 		2,666,203.00 ac-ft
Dead pool volume 47.00 ac-ft
Top of flood gate elevation 306.70 ft above NGVD29
Maximum design elevation 314.20 ft above NGVD29
Top of dam elevation 323.00 ft above NGVD29
Conservation pool elevation
End date: 2023-09-30 		301.10 ft above NGVD29
Conservation pool elevation
Start date: 2023-10-01 		301.20 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

2014-01-01 (source: IBWC)
Data Source IBWC:08-4612.00

Lake Location