Lake Conroe: 100.0% full as of 2018-02-17

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)
Today 2018-02-17 100.0 201.16 414,101 410,988 410,988 - n.a. -
Yesterday 2018-02-16 100.0 201.19 414,679 410,988 410,988 - n.a. -
2 days ago 2018-02-15 100.0 201.21 415,065 410,988 410,988 - n.a. -
1 week ago 2018-02-10 100.0 201.26 416,031 410,988 410,988 - n.a. -
1 month ago 2018-01-17 100.0 201.14 413,715 410,988 410,988 - n.a. -
3 months ago 2017-11-17 98.0 200.56 402,625 402,591 410,988 18,974
6 months ago 2017-08-17 98.2 200.62 403,764 403,730 410,988 19,005
1 year ago 2017-02-17 100.0 201.11 413,137 410,988 410,988 - n.a. -
*

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 2018-02-17 14:30 201.16 201.0 0.2 into flood pool
1 hour prior 2018-02-17 13:30 201.15 201.0 0.2 into flood pool
2 hours prior 2018-02-17 12:30 201.16 201.0 0.2 into flood pool
6 hours prior 2018-02-17 08:30 201.15 201.0 0.2 into flood pool
12 hours prior 2018-02-17 02:30 201.16 201.0 0.2 into flood pool
24 hours prior 2018-02-16 14:30 201.18 201.0 0.2 into flood pool
48 hours prior 2018-02-15 14:30 201.21 201.0 0.2 into flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1973-01-01
Vertical datum NGVD29
Gauge USGS:08067600
Dead pool elevation 145.0 ft above NGVD29
Top of flood gate elevation 202.5 ft above NGVD29
Emergency spillway crest elevation 173.0 ft above NGVD29
Maximum design elevation 207.0 ft above NGVD29
Top of dam elevation 212.0 ft above NGVD29
Conservation pool elevation 201.0 ft above NGVD29
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1973-01-01 (source: usgs)
1996-04-01 (source: twdb) : GIS Data
2010-08-01 (source: twdb) : GIS Data

Lake Location