To: Interested Parties

From: Water Resources Branch

RE: March 2007 monthly Water Quality Report

This is the Sabine River Authority Water Quality Report for March 2007. Water quality sampling was performed March 19th through March 22nd. Recent weather (previous seven days) in the Sabine River Basin was warm, with daytime highs in the mid 60s to low 80s at Lake Tawakoni and at Lake Fork. Toledo Bend Reservoir and Orange had daytime highs from the upper 60s to the low 80s. Lows ranged from the mid 30s to upper 50s at Lake Tawakoni and at Lake Fork. Toledo Bend and Orange had lows ranging from the mid 40s to the upper 50s. During the 28 days prior to the sample run, the Upper Basin received 2.37 and 1.52 inches of rainfall as recorded at Lake Tawakoni and at Lake Fork, respectively. Lake Tawakoni received 1.52 inches of rain and Lake Fork received 0.90 inches of rain the week preceding the sample run. Toledo Bend and Orange received 1.49 and 3.58 inches of precipitation during the 28 days prior to the sample run. Reservoir profiles indicated thermal stratification of the water column at deeper reservoir sites in Lake Tawakoni, Lake Fork and Toledo Bend reservoirs.



Upper Sabine Basin Above Toledo Bend Including Lake Fork and Lake Tawakoni


Water quality parameter measurements at the Upper Basin sites were consistent with water of high quality at all sites for the March sample run. The level of Lake Fork was recorded at 400.99 feet msl with 22 cfs releases and the level of Lake Tawakoni was recorded at 429.31 feet msl with 6 cfs releases at the time of sampling. All Upper Basin sites were within the numeric criteria stream standards for temperature, pH, dissolved oxygen, E. coli, chloride and sulfate.

Lower Sabine Basin Including Toledo Bend to Morgan Bluff

The March monthly sampling results were indicative of water of high quality at most sites. The area received 1.24 inches of rainfall during the week prior to sampling. The level of Toledo Bend Reservoir was recorded at 170.01 feet with 204 cfs discharge at the time of sampling. Toledo Bend Reservoir stations were stratified in vertical profile samples but no anoxic conditions were found. Stations BA4 and SR3 exceeded the stream standards criteria for sulfate.


Tidal Section of the Sabine Basin below Morgan Bluff

Most sites sampled in the Tidal portion of the Sabine Basin had values that are consistent with water of high quality. The Tidal stations received 1.59 inches of rainfall in the seven days prior to the sample event. Surface salinities were found at only one of the Tidal stations. The largest salinity value, 2.0 ppt, was found at station BB1 at 4.5 meters. All parameters measured were within the stream standards criteria.



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


  Upper Sabine Basin
Terry Wilson, Upper Basin Field Office Coordinator
903-878-2420 (

  Lower and Tidal Sabine Basin
Jerry Wiegreffe, Lower Basin Field Office Coordinator
409-746-3284 (

  If above are unavailable
John Payne, Special Projects Administrator
409-746-2192 (
Miles Hall, Environmental Services Division Manager
409-746-3284 (


Printed Friday, July 06, 2007 at 07:28