To: Interested Parties

From: Water Resources Branch

RE: March 2004 monthly Water Quality Report

This is the Sabine River Authority Water Quality Report for March 2004. Water quality sampling was performed March 8th through March 11th. Recent weather (previous seven days) in the Sabine River Basin was cool, with daytime high air temperatures from the mid 60s to the high 70s at Lake Tawakoni and at Lake Fork. Toledo Bend Reservoir and Orange had daytime highs from the upper 50s to the low 80s. Lows ranged from the low 40s to the mid 60s at Lake Tawakoni and at Lake Fork. Toledo Bend and Orange had lows ranging from the mid 40s to the low 60s. Lake Tawakoni and Lake Fork exhibited weak stratification. During the 28 days since the February sample run, the Upper Basin received 4.26 and 4.47 inches of rainfall, as recorded at Lake Tawakoni and Lake Fork, respectively. The week prior to the sample run, Lake Tawakoni recorded 0.72 inches and Lake Fork recorded 0.83 inches of rain. Toledo Bend and Orange received 5.27 and 2.06 inches, respectively, during the 28 days preceding the sample run.

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

For the March sample run, most parameter measurements at Upper Basin sites were consistent with water of high quality. Nitrate and nitrite levels at LT23C were above screening levels. Reservoir sites LT23C, LT23D, LT23A, LF4 and LF2 had high levels of dissolved oxygen with greater than 100 percent dissolved oxygen saturation, indicating algal activity. LT23D exceeded screening levels for chlorophyll a. Stream water at BS9 was slightly below stream standards for pH. SR22 exceeded the numeric criteria for the stream standards for E. coli.

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 close to an inch of rain in the week prior to the sample run. The level of Toledo Bend Reservoir was recorded at 172.62 feet. Five gates at the spillway were discharging and both generators were operating at the time of sampling. Most reservoir sites were showing signs of stratification, with pH and dissolved oxygen differences throughout the water column. All parameters recorded were within the stream standards for this section of the Basin.

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 only received a trace of rain in the week prior to the sampling event. Most sites in this section of the Basin showed signs of stratification, but no anoxic conditions were found at any tidal station. All salinity readings were less than 1.0 ppt due to good downstream flows from reservoir releases upstream. All parameters recorded were within the stream standards for this section of the Basin.


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 23, 2004