To: Interested Parties

From: Water Resources Branch

RE: December 2003 monthly Water Quality Report

This is the Sabine River Authority Water Quality Report for December 2003. Water quality sampling was performed December 8th through December 11th. Recent weather (previous seven days) in the Sabine River Basin was cool, with daytime high air temperatures (Fahrenheit) from the low 50s to the low 70s at Lake Tawakoni and at Lake Fork. Toledo Bend Reservoir and Orange had daytime highs from the low 50s to the mid 70s. Lows ranged from 28 to 58 at Lake Tawakoni and from 31 to 48 at Lake Fork. Toledo Bend and Orange had lows ranging from the upper 20s to the low 50s. The reservoir sites were mixed. During the 28 days since the November sample run, the Upper Basin received 1.17 and 1.36 inches of rainfall as recorded at Lake Tawakoni and Lake Fork, respectively. The week prior to the sample run, Lake Tawakoni recorded no rain and Lake Fork recorded 0.03 inches of rain. Toledo Bend and Orange received 6.10 and 4.34 inches, respectively, during the 28 days preceding the sample run.

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

For the December sample run, most parameter measurements at Upper Basin sites were consistent with water of high quality. Nitrate and nitrite levels at LT23A and LF2 were above screening levels and SR14 exceeded the numeric criteria for the stream standards for E. coli.

Lower Sabine Basin Including Toledo Bend to Morgan Bluff

The December monthly sampling results were indicative of water of high quality at most sites. The last significant amount of rainfall the area received was more than seven days prior to the sample run. The level of Toledo Bend Reservoir was recorded at 166.92 feet with no discharge from the spillway or the generator at the time of sampling. Most reservoir sites were well mixed, with similar readings throughout the water column. All parameters in the Lower Basin were within stream standards, but two sites (TB8, TB7A) exceeded the screening criteria for Nitrate /Nitrite.

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 last significant rainfall the area received was 0.50 inch of rain the day prior to sampling. Most tidal sites showed some signs of stratification with slight oxygen differences throughout the water column. No anoxic conditions were found at any tidal station. Surface salinities were found at all but the most northern tidal station. Among the stations with surface salinity, the salinity values ranged from 1.0 ppt at station SRT1C to 4.0 ppt at stations BB1 and SRT1. The highest salinity, 13.0 ppt, was found at station SRT1C at the deepest depth measured. All parameters from the tidal sites were within stream standards.


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, Resource Management/ Project Development Division Manager
409-746-2192 (


Printed Wednesday, June 02, 2004