To: Interested Parties

From: Water Resources Branch

RE: October 2004 monthly Water Quality Report

This is the Sabine River Authority Water Quality Report for October 2004. Water quality sampling was performed October 11th through October 14th. Recent weather (previous seven days) in the Sabine River Basin was mild, with daytime highs from the mid 60s to the mid 80s at Lake Tawakoni and at Lake Fork. Toledo Bend Reservoir and Orange had daytime highs from the low 70s to the mid 80s. Lows ranged from the low to upper 60s at Lake Tawakoni and at Lake Fork. Toledo Bend and Orange had lows ranging from the low 50s to the low 70s. The waters of Lake Tawakoni and Lake Fork were mixed, exhibiting no thermal stratification. During the 28 days prior to the sample run, the Upper Basin received 2.33 and 4.76 inches of rainfall as recorded at Lake Tawakoni and at Lake Fork, respectively. Lake Tawakoni and Lake Fork received 1.77 and 4.13 inches of rainfall the week preceding the sample run. Toledo Bend and Orange received 5.87 and 5.09 inches, respectively, during the 28 days prior to the sample run.

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

Most water quality parameter measurements at the Upper Basin sites were consistent with water of high quality for the October sample run. The level of Lake Fork was recorded at 401.73 feet msl with 64 cfs releases and the level of Lake Tawakoni was recorded at 436.51 feet msl with 0 cfs releases (temporary non-release to accommodate construction) at the time of sampling. LT23A exceeded the screening criteria for chlorophyll a, and LT23D exceeded the screening criteria for ortho-phosphate. All reservoir and stream sites were within stream standard levels for E. coli.


Lower Sabine Basin Including Toledo Bend to Morgan Bluff

The October monthly sampling results were indicative of water of high quality at most sites. The area received approximately two inches of rainfall during the seven days prior to sampling. The level of Toledo Bend Reservoir was recorded at 168.42 feet msl with 174 cfs discharge at the time of sampling. All reservoir stations were stratified, with pH and dissolved oxygen differences throughout the water column, but anoxic conditions were only found at the two deepest lake stations. All measured parameters were within the stream standards criteria.

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 3.47 inches of rainfall the week prior to the sample run. Most of the sites in this section of the Basin showed some stratification, but anoxic conditions were only found at one station. Surface salinities were found at all but one tidal station with the highest value of 6 ppt found at station SRT1. The overall greatest salinity value of 14 ppt was found at station SRT1C at a depth of 11.0 meters. Station BB1 recorded Enterococcus results that were above the stream standard criteria.

 

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, May 23, 2005 at 11:19