Falcon Reservoir: 22.1% full as of 2022-01-20

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)
Most recent 2022-01-20 22.1 258.54 409,352 342,674 1,551,007 25,766
1 day prior 2022-01-19 22.4 258.77 415,201 347,571 1,551,007 26,035
2 days prior 2022-01-18 22.7 258.97 420,142 351,707 1,551,007 26,263
1 week prior 2022-01-13 22.2 258.59 410,489 343,626 1,551,007 25,819
1 month prior 2021-12-20 21.8 258.76 414,813 337,450 1,551,007 26,018
3 months prior 2021-10-20 20.1 258.52 408,720 311,294 1,551,007 25,738
6 months prior 2021-07-20 25.8 261.49 492,196 399,659 1,551,007 29,135
1 year prior 2021-01-20 28.3 261.67 497,306 439,640 1,551,007 29,331
*

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 2022-01-21 05:15 258.59 301.10 -42.51 below flood pool
1 hour prior 2022-01-21 04:15 258.59 301.10 -42.51 below flood pool
2 hours prior 2022-01-21 03:15 258.58 301.10 -42.52 below flood pool
6 hours prior 2022-01-20 23:15 - n.a. - - n.a. - - n.a. - into flood pool
12 hours prior 2022-01-20 17:15 - n.a. - - n.a. - - n.a. - into flood pool
24 hours prior 2022-01-20 05:15 258.46 301.10 -42.64 below flood pool
48 hours prior 2022-01-19 05:15 258.79 301.10 -42.31 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1954-01-01
Vertical datum NGVD29
Gauge IBWC:08-4612.00
Dead pool elevation 204.34 ft above NGVD29
Service spillway crest elevation 256.70 ft above NGVD29
Volume under conservation pool elevation 2,646,817.00 ac-ft
Dead pool volume 47.00 ac-ft
Top of flood gate elevation 306.70 ft above NGVD29
Emergency spillway crest 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 301.10 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Lake Location