Lake Conroe: 93.1% full as of 2020-09-20

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 2020-09-20 93.1 199.50 382,796 382,762 410,988 18,441
Yesterday 2020-09-19 93.3 199.53 383,350 383,316 410,988 18,456
2 days ago 2020-09-18 93.4 199.57 384,088 384,054 410,988 18,475
1 week ago 2020-09-13 93.7 199.62 385,013 384,979 410,988 18,500
1 month ago 2020-08-20 94.6 199.83 388,909 388,875 410,988 18,604
3 months ago 2020-06-20 94.0 199.69 386,309 386,275 410,988 18,534
6 months ago 2020-03-20 94.3 199.75 387,422 387,388 410,988 18,564
1 year ago 2019-09-20 91.3 199.09 375,275 375,241 410,988 18,247
*

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 2020-09-20 15:15 199.51 201.00 -1.49 below flood pool
1 hour prior 2020-09-20 14:15 199.50 201.00 -1.50 below flood pool
2 hours prior 2020-09-20 13:15 199.49 201.00 -1.51 below flood pool
6 hours prior 2020-09-20 09:15 199.50 201.00 -1.50 below flood pool
12 hours prior 2020-09-20 03:15 199.51 201.00 -1.49 below flood pool
24 hours prior 2020-09-19 15:15 199.53 201.00 -1.47 below flood pool
48 hours prior 2020-09-18 15:15 199.57 201.00 -1.43 below 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 145.00 ft above NGVD29
Top of flood gate elevation 202.50 ft above NGVD29
Emergency spillway crest elevation 173.00 ft above NGVD29
Maximum design elevation 207.00 ft above NGVD29
Top of dam elevation 212.00 ft above NGVD29
Conservation pool elevation 201.00 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