Lake Arlington: 95.4% full as of 2017-08-19

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 2017-08-19 95.4 549.03 38,335 38,335 40,188 1,898
Yesterday 2017-08-18 95.4 549.03 38,335 38,335 40,188 1,898
2 days ago 2017-08-17 95.1 548.96 38,203 38,203 40,188 1,896
1 week ago 2017-08-12 92.4 548.40 37,144 37,144 40,188 1,884
1 month ago 2017-07-19 94.4 548.81 37,918 37,918 40,188 1,893
3 months ago 2017-05-19 88.9 547.64 35,718 35,718 40,188 1,869
6 months ago 2017-02-19 99.6 549.91 40,015 40,015 40,188 1,921
1 year ago 2016-08-19 81.6 546.07 32,807 32,807 40,188 1,840
*

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 2017-08-19 18:15 549.01 550.0 -1.0 below flood pool
1 hour prior 2017-08-19 17:15 549.01 550.0 -1.0 below flood pool
2 hours prior 2017-08-19 16:15 549.02 550.0 -1.0 below flood pool
6 hours prior 2017-08-19 12:15 549.02 550.0 -1.0 below flood pool
12 hours prior 2017-08-19 06:15 549.03 550.0 -1.0 below flood pool
24 hours prior 2017-08-18 18:15 549.04 550.0 -1.0 below flood pool
48 hours prior 2017-08-17 18:15 548.98 550.0 -1.0 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1957-01-01
Vertical datum NGVD29
Gauge USGS:08049200
Service spillway crest elevation 550 ft above NGVD29
Conservation pool elevation 550.0 ft above NGVD29
Emergency spillway crest elevation 559.7 ft above NGVD29
Top of dam elevation 577.5 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1957-01-01 (source: usgs)
2007-12-01 (source: twdb) : GIS Data

Lake Location