Falcon Reservoir: 40.7% full as of 2017-03-26

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. 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, while 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 2017-03-26 40.7 271.30 827,575 631,450 1,551,007 40,193
Yesterday 2017-03-25 41.0 271.42 832,475 635,189 1,551,007 40,338
2 days ago 2017-03-24 41.0 271.43 832,870 635,491 1,551,007 40,350
1 week ago 2017-03-19 41.3 271.59 839,016 640,180 1,551,007 40,531
1 month ago 2017-02-26 38.8 270.63 801,214 601,888 1,551,007 39,417
3 months ago 2016-12-26 38.8 273.35 913,163 601,716 1,551,007 42,622
6 months ago 2016-09-26 34.2 269.83 770,336 531,147 1,551,007 38,503
1 year ago 2016-03-26 54.7 284.54 1,475,839 848,359 1,551,007 57,394
*

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 2017-03-26 10:45 271.27 301.1 -29.8 below flood pool
1 hour prior 2017-03-26 09:45 271.28 301.1 -29.8 below flood pool
2 hours prior 2017-03-26 08:45 271.29 301.1 -29.8 below flood pool
6 hours prior 2017-03-26 04:45 271.30 301.1 -29.8 below flood pool
12 hours prior 2017-03-25 22:45 - n.a. - - n.a. - - n.a. - into flood pool
24 hours prior 2017-03-25 10:45 271.41 301.1 -29.7 below flood pool
48 hours prior 2017-03-24 10:45 271.49 301.1 -29.6 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 256.7 ft above NGVD29
Conservation pool elevation 301.1 ft above NGVD29
Volume under conservation pool elevation 2646817 ac-ft
Dead pool volume 47 ac-ft
Top of flood gate elevation 306.7 ft above NGVD29
Emergency spillway crest elevation 306.7 ft above NGVD29
Maximum design elevation 314.2 ft above NGVD29
Top of dam elevation 323 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Lake Location