To: Interested Parties

From: Environmental Services Division

RE: March 2009 monthly Water Quality Report

The Environmental Services Field Offices conducted water quality monitoring in the Sabine Basin from March 16^th through 18^th. The results of the field monitoring are presented in this report and additional laboratory results will be included in the annual Sabine Basin Water Quality Report.

Sabine Basin Tidal (Including Tributaries)

Weather - Weather conditions in the Tidal Basin were warm with highs from the mid 40s to the low 80s. Low temperatures ranged from low 40s to upper 60s. The Tidal stations received 2.44 inches of rainfall in the seven days prior to the sampling event. The area received some heavy rainfall in the weekend just prior to the sampling event.

Tidal Conditions - Surface salinities were found at all but three of the Tidal stations. The largest salinity value, 14.6ppt, was found at Sabine River station SRT1C at a depth of 10.5 meters.

Lower Sabine Basin (Toledo Bend Reservoir and Below)

Weather - Weather conditions in the Lower Basin were warm with highs from the upper 40s to low 80s. Low temperatures ranged from mid 40s to low 70s. Toledo Bend received 5.58 inches of rainfall during the seven days prior to the sampling event, including very heavy rains just prior to sampling. This heavy rain resulted in an increase in the turbidity, bacterial results, and lower Secchi values.

Lake Level - The level of Toledo Bend Reservoir was recorded at 170.13 feet with 204 cfs discharge at the time of sampling. Toledo Bend has a conservation pool level of 172ft msl. Reservoir profiles indicated mixing of the water column at all lake stations.

Upper Sabine Basin (Lake Tawakoni, Lake Fork Reservoir, and the River Above Toledo Bend)

Weather - Recent weather (previous seven days) in the Sabine River Basin was cool, with daytime highs in the low 40s to upper 70s with lows in the mid 30s to mid 50s at Lake Tawakoni and at Lake Fork. Lake Tawakoni received 3.26 inches of rainfall and Lake Fork received 3.66 inches rainfall the week preceding the sample run.

Lake Level - The level of Lake Tawakoni was 433.12 feet msl with a 6 cfs release and the level of Lake Fork was 402.73 feet msl with a 9.5 cfs release at the time of sampling. Lake Tawakoni and Lake Fork have conservation pool levels of 437.5 msl and 403 msl, respectively. Reservoir profiles indicated mixing of the water column at all stations on Lake Tawakoni and Lake Fork.

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

Ø Miles Hall, Environmental Services Division Manager
409-746-3284 (mhall@sratx.org)

Ø Lower and Tidal Sabine Basin
Jerry Wiegreffe, Lower Basin Field Office Coordinator
409-746-3284 (jwiegreffe@sratx.org)

Ø Upper Sabine Basin
Terry Wilson, Upper Basin Field Office Coordinator
903-878-2420 (twilson@sratx.org)

SABINE RIVER AUTHORITY OF TEXAS

Monthly Water Quality Report

Table of Contents

Fixed Monitoring Stations 4

Segment 0501 – Sabine River Tidal 5

Segment 0502 - Sabine River Above Tidal 8

Segment 0503 - Sabine River Above Caney Creek. 9

Segment 0504 – Toledo Bend Reservoir. 10

Segment 0505 - Sabine River Above Toledo Bend Reservoir. 14

Segment 0506 - Sabine River Below Lake Tawakoni 15

Segment 0507 - Lake Tawakoni 19

Table of Figures

Toledo Bend Reservoir Profiles. 11

Segment 0504. 13

Segment 0505. 14

Lake Fork Reservoir Profiles. 16

Segment 0506. 18

Lake Tawakoni Profiles. 19

Segment 0507. 21

Sabine Basin Map

Fixed Monitoring Stations

Segment	Station TCEQ ID (SRA-TX ID	Location
501	10391 (SRT1)	SABINE RIVER AT CHANNEL CAN 3
501	15654 (BB1)	BLACK BAYOU IN CAMERON PARISH
501	10393 (SRT1A)	SABINE RIVER AT CHANNEL LIGHT 13
501	18055 (SRT1B)	SABINE RIVER AT CHANNEL LIGHT 20
501	15653 (ICW1)	INTERCOASTAL WATERWAY AT PERRY RIDGE
501	18056 (SRT1C)	OLD HWY 90
501	10394 (SRT2)	SABINE RIVER AT IH 10
501	10395 (SR1)	SABINE RIVER 12.00 KM UPSTREAM OF IH 10
502	10397 (SR2)	SABINE RIVER AT SH 12 NORTH OF DEWEYVILLE TX.
513	10465 (BCC1)	BIG COW CREEK AT FM 1416 SOUTH OF BON WIER
503	10398 (SR3)	SABINE RIVER AT US 190 EAST OF BON WIER TX.
503	10340 (BA4)	ANACOCO BAYOU AT LOUISIANA HWY 111 CROSSING SOUTHWEST OF KNIGHT LA
503	10399 (SR5)	SABINE RIVER AT SH 63 EAST OF BURKEVILLE TX.
503	10401 (TB6S)	SABINE RIVER BELOW TOLEDO BEND RESERVOIR AT RIGHT ABUTMENT OF SPILLWAY FOR DAM
503	15660 (BT1)	BAYOU TORO AT LA SH 392 IN SABINE PARISH SW OF HORNBECK LA
504	10404 (TB6A)	TOLEDO BEND RESERVOIR MAIN LAKE ABOVE THE DAM AT THE OLD RIVER CHANNEL
504	10407 (TB6CN)	TOLEDO BEND RESERVOIR IN SIX MILE BOAT LANE AT SH87
504	18054 (TB6Q)	TOLEDO BEND RESERVOIR IN NEGREET BAYOU
504	10411 (TB6F)	TOLEDO BEND RESERVOIR IN SUNSHINE BAY NEAR FM3121 BRIDGE
504	10402 (TB6H)	TOLEDO BEND RESERVOIR AT SH 21 NORTHEAST OF MILAM
504	15659 (TB6K)	TOLEDO BEND RESERVOIR IN LANANA BAYOU AT LOUISIANA SH 191 IN SABINE PARISH LOUISIANA WEST OF MANY
504	15655 (TB6J)	TOLEDO BEND RESERVOIR PATROON BAYOU BRANCH AT FM 276
504	18053 (TB6LN)	TOLEDO BEND RESERVOIR SAN MIGUEL ARM BOAT LANE
504	18052 (TB6R)	TOLEDO BEND RESERVOIR AT RAGTOWN
504	10403 (TB8)	TOLEDO BEND RESERVOIR AT US 84 NEAR LOGANSPORT LA
505	10415 (SR10)	SABINE RIVER AT FM 2517
505	13628 (SR11)	SABINE RIVER AT US 59
505	10423 (SR14)	SABINE RIVER AT SH 149
505	10426 (SR15)	SABINE RIVER AT US 259
505	10427 (SR16)	SABINE RIVER AT SH 42
506	10428 (SR17)	SABINE RIVER AT US 271
506	10429 (SR19)	SABINE RIVER AT SH 14 S. OF HAWKINS
506	10430 (SR21)	SABINE RIVER AT US 69
506	17065 (SR22)	SABINE RIVER AT FM 17
514	16011 (BS9)	BIG SANDY CREEK AT WHITE OAK ROAD
515	10469 (LF20)	LAKE FORK CREEK AT US 80
512	10458 (LF2)	LAKE FORK RESERVOIR NEAR DAM IN CREEK CHANNEL
512	10462 (LF4)	LAKE FORK RESERVOIR MID-COVE IN LAKE FORK CREEK ARM AT FM515
512	10461 (LF3)	LAKE FORK RESERVOIR MID-ARM IN CANEY CREEK ARM AT FM 515
507	10434 (LT23A)	LAKE TAWAKONI IN THE MAIN LAKE NEAR THE DAM
507	10435 (LT23D)	LAKE TAWAKONI IN KITSEE INLET NEAR WHITE POINT CAUSEWAY
507	10440 (LT23C)	LAKE TAWAKONI NEAR WIND POINT PARK

Segment 0501 – Sabine River Tidal

Description: The designated segment includes the Sabine River from the confluence with Sabine Lake in Orange County to West Bluff in Orange County. Although some areas are quite rural, this part of the Sabine Basin has two cities with populations greater than 5,000 and a variety of industries.

Sampling Conditions: The Tidal stations received 2.44 inches of rainfall in the seven days prior to the sample event. The area received heavy rainfall the weekend before sampling. This rainfall resulted in increased turbidity, lower Secchi values, and higher bacterial results due to the amount of runoff . Good downstream flow was also observed in the river. Surface salinities were found at all but three of the Tidal stations. The largest salinity value, 14.6 ppt, was found at Sabine River stations SRT1C at a depth of 10.5 meters. Heavy activity continues along the lower river in conjunction with underground pipeline construction.

Segment 0501 Water Quality with Profiles

Date and Time	Station	Depth	Temp	pH	DO	% Sat	Cond	TDS	Salinity	Secchi	Turbidity	E.coli	Enterococcus
		meters	^°C	SU	mg/L		µS/cm	mg/L	ppt	meters	NTU	mpn/ 100mL	mpn/ 100mL
3/18/2009 11:40	10391(SRT1)	0.3	16.2	6.9	7.9	81	5,111	3,276	2.8	0.41	24.2	365	236
		2.5	15.4	7.2	7.5	76	6,205	4,040	3.5
		5.0	16.1	7.4	7.3	76	10,100	6,459	5.7
		6.6	17.1	7.5	7.2	79	18,719	11,980	11.1
		10.0	17.4	7.4	7.1	79	21,342	13,650	12.7
3/18/2009 11:30	15654(BB1)	0.3	16.3	7.3	7.1	75	12,672	8,126	7.3	0.7	10.3	38	53
		1.5	16.1	7.3	7.0	74	12,683	8,135	7.3
		3.0	16.1	7.4	7.1	75	12,858	8,221	7.4
		6.2	16.1	7.3	7.1	75	12,976	8,304	7.5
3/18/2009 11:11	10393(SRT1A)	0.3	15.4	6.9	7.8	79	4,182	2,610	2.2	0.32	27.1	291	238
		2.5	15.4	7.1	7.5	77	4,698	3,084	2.6
		4.8	15.6	7.1	7.4	76	6,702	4,181	3.6
		5.6	17.3	7.3	6.4	71	16,589	10,620	9.7
		9.9	17.5	7.1	5.6	63	20,910	13,350	12.4
3/18/2009 11:00	18055(SRT1B)	0.3	14.8	6.8	8.0	80	3,695	2,403	1.9	0.31	33.3	411	272
		2.0	14.9	7.1	7.8	78	4,213	2,696	2.3
		5.0	15.5	7.2	7.5	77	5,963	3,816	3.3
		6.9	15.9	7.2	7.2	75	8,723	5,580	4.9
		7.5	16.8	7.3	6.3	68	15,747	10,080	9.2
		10.0	17.8	7.1	5.3	60	21,845	13,990	13.1
3/18/2009 10:48	15653(ICW1)	0.3	16.2	7.1	8.0	84	10,562	6,767	6	0.24	20.8	291	387
		1.4	16.1	7.3	7.9	83	10,643	6,809	6.1
		3.0	16.1	7.2	7.8	83	10,696	6,842	6.1
		5.6	16.0	7.2	7.8	82	10,808	6,909	6.1

NM = Not Measured

Segment 0501 Water Quality with Profiles Continued

Date and Time	Station	Depth	Temp	pH	DO	% Sat	Cond	TDS	Salinity	Secchi	Turbidity	E.coli	Enterococcus
		meters	^°C	SU	mg/L		µS/cm	mg/L	ppt	meters	NTU	mpn/ 100mL	mpn/ 100mL
3/18/2009 10:30	18056(SRT1C)	0.3	14.2	6.6	8.4	81	1,114	713	<1	0.16	44.5	291	248
		2.4	14.1	6.9	8.2	80	1,145	740	<1
		5.0	14.6	7.2	7.6	75	2,023	1,315	1.2
		7.5	15.7	7.2	6.9	71	10,154	6,266	5.6
		8.3	17.2	7.2	5.7	63	18,569	11,910	11
		10.5	18.6	7.0	4.6	54	24,265	15,500	14.6
3/18/2009 10:17	10394(SRT2)	0.3	13.9	6.5	8.6	83	150	96	<1	0.15	58.4	613	249
		1.1	13.9	6.6	8.5	83	150	96	<1
		2.5	13.8	6.6	8.5	82	149	96	<1
		5.0	13.8	6.5	8.5	82	151	97	<1
		7.3	13.8	6.4	8.5	82	152	98	<1
3/18/2009 9:50	10395(SR1)	0.3	13.7	6.3	8.6	83	85	54	NM	0.11	76.8	548	NM

NM = Not Measured

Segment 0501

Segment 0502 - Sabine River Above Tidal

Description: The designated segment includes the Sabine River from West Bluff in Orange County to the confluence with Caney Creek in Newton County. The largest tributary is Big Cow Creek (Segment 0513). This is largely a rural area with no major industries or cities.

Segment 0513 – Big Cow Creek from the confluence with the Sabine River in Newton County to a point 4.6 kilometers (2.9 miles) upstream of R 255 in Newton County.

Sampling Conditions: The area received heavy rainfall several days prior to sampling. This rainfall resulted in higher than normal flows, increased turbidity, lower Secchi values, and higher bacterial results due to the amount of runoff. The USGS recorded flow at Sabine River station SR2 was 9530 cfs.

Segment 0502 Water Quality

Date and Time	Station	Depth	Temp	pH	DO	% Sat	Cond	TDS	Secchi	Turbidity	E.coli
Date and Time	Station	meters	^°C	SU	mg/L	% Sat	µS/cm	mg/L	meters	NTU	mpn/100mL
3/17/2009 8:45	10397(SR2)	0.3	12.5	6.4	9.1	86	67	42	0.18	79.5	1203
Segment 0513
3/17/2009 9:20	10465(BCC1)	0.3	13.2	5.7	8.7	83	41	26	0.22	40.9	1553

Segment 0502

Segment 0503 - Sabine River Above Caney Creek

Description: The designated segment includes the Sabine River from a point immediately upstream of the confluence with Caney Creek in Newton County up to Toledo Bend Dam in Newton County. This is largely a rural area with no major cities and few industries. The two major tributaries include Bayou Anacoco and Bayou Toro that flow from Louisiana.

Segment 0503 Water Quality

Date and Time	Station	Depth	Temp	pH	DO	% Sat	Cond	TDS	Secchi	Turbidity	E.coli
Date and Time	Station	meters	^°C	SU	mg/L	% Sat	µS/cm	mg/L	meters	NTU	mpn/100mL
3/17/2009 0:00	10398(SR3)	0.3	12.7	6.6	9.5	89	61	39	0.13	101	1414
3/17/2009 10:45	10340(BA4)	0.3	13.3	6.6	9.4	89	72	46	0.16	104	727
3/17/2009 10:17	10399(SR5)	0.3	11.6	6.6	9.6	89	61	39	0.24	74	>2420
3/16/2009 13:20	10401(TB6S)	0.3	13.9	7.6	10.5	101	144	92	>1.2	2.5	5
3/16/2009 13:00	15660(BT1)	0.3	10.7	5.9	10.3	92	41	27	0.11	110	>2420

NM= Not Measured

Segment 0503

Segment 0504 – Toledo Bend Reservoir

Description: The designated segment includes the Sabine River from Toledo Bend Dam in Newton County to a point immediately upstream of the confluence of Murvaul Creek in Panola County. Although this area is largely rural, it includes two cities with populations greater than 5,000. Murvaul Creek is a major tributary that enters upstream from the reservoir.

Sampling Conditions: Toledo Bend received 5.58 inches of rainfall during the week prior to sampling. The level of Toledo Bend Reservoir was recorded at 170.13 feet with 204 cfs discharge at the time of sampling. Reservoir profiles indicated thermal mixing of the water column.

Segment 0504 Water Quality with Profiles

Date and Time	Station	Depth	Temp	pH	DO	% Sat	Cond	TDS	Secchi	Turbidity	E.coli
Date and Time	Station	meters	^°C	SU	mg/L	% Sat	µS/cm	mg/L	meters	NTU	mpn/100mL
3/16/2009 14:50	10404(TB6A)	0.3	13.9	7.5	10.1	98	156	100	2.2	1.78	<1
		2.0	13.7	7.6	10.0	97	155	100
		5.0	13.7	7.5	10.0	96	155	99
		10.0	13.5	7.4	9.5	91	155	99
		15.0	14.4	7.3	9.3	89	155	99
		20.4	13.2	7.1	8.4	81	156	100
		24.8	12.7	7.0	7.4	70	158	101
		25.3	12.7	6.9	5.4	49	164	104
3/16/2009 9:50	10407(TB6CN)	0.3	13.6	7.2	9.6	91	129	83	1.5	4.68	129
		1.0	13.4	6.6	9.1	87	129	83
		2.0	10.5	6.2	8.2	74	69	44
		3.0	10.3	6.2	8.1	73	65	41
		5.2	10.2	6.4	8.4	74	53	33
3/16/2009 13:35	18054(TB6Q)	0.3	14.4	7.4	9.3	91	163	104	1.6	2.46	38
		1.4	14.3	7.4	9.3	91	162	104
		2.5	14.2	7.4	9.1	88	163	104
		6.5	14.1	7.3	8.8	85	162	1003
		8.0	13.8	7.1	8.7	84	158	101
		8.8	13.2	7.0	8.3	79	145	93
3/16/2009 11:00	10411(TB6F)	0.3	13.6	7.1	9.2	88	110	71	1.1	7.1	147
		1.0	13.3	6.8	9.1	87	110	70
		2.0	11.7	6.5	8.7	80	82	53
		3.0	10.6	6.5