To: Interested Parties

From: Water Resources Branch

RE: February 2004 monthly Water Quality Report

This is the Sabine River Authority Water Quality Report for February 2004. Water quality sampling was performed February 9th through February 12th. Recent weather (previous seven days) in the Sabine River Basin was cool, with daytime high air temperatures (Fahrenheit) from the low 40s to the mid 50s at Lake Tawakoni and at Lake Fork. Toledo Bend Reservoir and Orange had daytime highs from the low 40s to the upper 60s. Lows ranged from the mid 20s to the low 40s at Lake Tawakoni and at Lake Fork. Toledo Bend and Orange had lows ranging from the mid 20s to the upper 40s. The reservoir sites were mixed. During the 28 days since the January sample run, the Upper Basin received 4.2 and 4.8 inches of rainfall as recorded at Lake Tawakoni and Lake Fork, respectively. The week prior to the sample run, Lake Tawakoni recorded 1.81 inches and Lake Fork recorded 2.73 inches of rain. Toledo Bend and Orange received 9.17 and 13.25 inches, respectively, during the 28 days preceding the sample run.

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

For the February sample run, most parameter measurements at Upper Basin sites were consistent with water of high quality. Nitrate and ortho-phosphate values at LT23C were above screening levels. BS9 was below stream standards for pH. Most likely due to recent rains, the stream sites LF20, BS9, SR22, SR21, SR19, SR17, SR16, SR15, SR14, SR11, and SR10 exceeded the stream standards numeric criteria for E. coli.


Lower Sabine Basin Including Toledo Bend to Morgan Bluff

The February monthly sampling results were indicative of water of high quality at most sites. The Lower Basin recorded close to two inches of rainfall during the sample run in addition to nearly three inches that were recorded the week prior to sampling. The level of Toledo Bend Reservoir was recorded at 170.95 feet and rising. The main step-up transformer at the powerhouse was down for repair, so powerhouse releases of 14,000 cfs were simulated at the spillway beginning at 8 AM on the day of sampling (February 11, 2004). Reservoir sites were well mixed. Station TB6CN had a pH result that was below the stream standard, and ten of the seventeen Lower Basin sites had high bacterial counts. The bacterial counts can be traced to the excessive rainfall the area received.

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 also received a large amount of rainfall recently, with most of the area receiving nearly four inches. Most sites in the Tidal Basin were well mixed with only slight signs of stratification, and no anoxic conditions were found at any tidal station. All salinity readings were less than 1.0 ppt due to the heavy rainfall. The bacterial results from all of the tidal stations, except one, exceeded stream standards, which can also be traced to the amount of rainfall that was received.

 

This Report and additional data for these monitoring stations are available on our World Wide Web site (www.sra.dst.tx.us). 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 (twilson@sra.dst.tx.us)

      Lower and Tidal Sabine Basin
Jerry Wiegreffe, Lower Basin Field Office Coordinator
409-746-3284 (jwiegreffe@sra.dst.tx.us)

      If above are unavailable
John Payne, Special Projects Administrator
409-746-2192 (jpayne@sra.dst.tx.us)
or
Miles Hall, Resource Management/ Project Development Division Manager
409-746-2192 (mhall@sra.dst.tx.us)

 

Printed Monday, June 14, 2004