To: Interested Parties

From: Environmental Services Division

RE: December 2007 monthly Water Quality Report

The Environmental Services Field Offices conducted water quality monitoring in the Sabine Basin from December 10th through the 12th. The results of the field monitoring are presented in this report and additional laboratory results will be included in the annual Sabine Basin Water Quality Report.

 

Sabine Basin Tidal (Including Tributaries)

 

Weather - Weather conditions in the Tidal Basin were mild with highs from the low 60s to the upper 70s. Low temperatures ranged from the low 30s to the upper 60s. The Tidal stations received 0.05 inches of rainfall in the seven days prior to the sample event. 

Tidal Conditions - Surface salinities were found at all but two of the Tidal stations. The largest salinity value, 15.1 ppt, was found at Sabine River station SRT1A at 10.6 meters. 

Lower Sabine Basin (Toledo Bend Reservoir and Below)

 

Weather - Weather conditions in the Lower Basin were mild with highs from the low 60s to the low 80s. Low temperatures ranged from the mid 20s to the mid 60s. Toledo Bend received 0.18 inches of rainfall during the week prior and during sampling. 

Lake Level - The level of Toledo Bend Reservoir was recorded at 167.73 feet with 204 cfs discharge at the time of sampling. Toledo Bend has a conservation pool level of 172ft msl. Reservoir profiles indicated thermal mixing of the water column.

 

Upper Sabine Basin (Lake Tawakoni, Lake Fork Reservoir, and the River Above Toledo Bend)

Weather - Recent weather (previous seven days) in the Sabine River Basin was cool, with daytime highs in the low 50s to low 80s with lows in the upper 20s to mid 60s at Lake Tawakoni and at Lake Fork. Lake Tawakoni received 0.04 inches of rain and Lake Fork received no rain the week preceding the sample run.

Lake Level - The level of Lake Tawakoni was 435.47 feet msl with a 6 cfs release and the level of Lake Fork was 402.53 feet msl with a 7 cfs release at the time of sampling. Lake Tawakoni and Lake Fork have conservation pool levels of 437.5 msl and 403 msl, respectively. Reservoir profiles indicated thermal mixing of the water column at Lake Tawakoni and Lake Fork.

 

This Report and additional data for these monitoring stations are available on our World Wide Web site (www.sratx.org). If you have any questions or comments concerning this report, please contact:

 

 

  Miles Hall, Environmental Services Division Manager
409-746-3284 (mhall@sratx.org)

  Lower and Tidal Sabine Basin
Jerry Wiegreffe, Lower Basin Field Office Coordinator
409-746-3284 (jwiegreffe@sratx.org)

  Upper Sabine Basin
Terry Wilson, Upper Basin Field Office Coordinator
903-878-2420 (twilson@sratx.org)