2020 Texas Integrated Report - Assessment Results for ... · 2020 Texas Integrated Report - Assessment Results for Basin 11 - San Jacinto-Brazos Coastal Basin Report Abb Descreviationsription:

2020 Texas Integrated Report - Assessment Results for Basin 11 - San Jacinto-Brazos Coastal Basin

Report Abbreviations Description: SEGID: Unique Segment identification alpha-numeric code; can be stream, reservoir, estuary, oyster waters, beach watch, etc. AUID: Unique Assessment Unit code; this is a portion of the segment the AUID begins with and ends with _01, _02, etc. Some AUIDs are special units ending in "SA," or oyster water

AUIDs are indicated by "OW" and beach watch AUIDs are indicated by abbreviations for name of beach in AUID. ASMT Start Date: The start date of the period of record data for this method was selected; the official 2020 period of record is from 12/1/2011 to 11/30/2018. Assessors have the option of going

back 10 years (12/1/2008) to select more data, according to assessment guidance. ASMT End Date: The end date of the period of record data for this method was selected; the official 20 20 period of record dates are 12/1/2011 to 11/30/2018. Assessors have the option of

including more recently collected data than 12/01/2018, if available. # Assd: Number of samples assessed; some data are averaged, as with profile data, some are eliminated because criteria do not apply during certain conditions such a s low flow. Mean Assd: Mean of samples assessed; includes averaged methods like chronic criteria as well as geometric mean calculations for bacteria. # Exceed: The number of samples that exceed criteria for single sample, or binomial, methods (not averaged data). Mean Exceed: This is the mean of the samples that exceeded criteria for the single sample, or binomial, methods (not averaged data). Criteria: Value that the data is compared against to determine level of support; Note: for acute metals in water, each value is compare d to a calculated criterion and not all criteria could

be reported here, only the minimum in the range of criteria calculated are included. DS Qual: Dataset Qualifier - indicates sample sizes:

AD = Adequate Data (10 or more samples) LD = Limited Data (less than 9, greater than 3) ID = Inadequate Data (less than 4) JQ = Level of support is based on judgment of the assessor SM = This assessment method is superseded by another method

TR = Temporally Not Representative, used with NA SR = Spatially Not Representative, used with NA OE = Other information than ambient samples evaluated OS = Assessment area outside state boundaries

LOS: Level of support for this use, method, assessment parameter: FS = Fully Supporting NC = No Concern NA = Not Assessed

NS = Nonsupport CS = Screening Level Concern CN = Use Concern

CF: Carry forward indicator check box: indicates that the Integrated level of support of CS, CN, or NS was carried forward from a previous assessment due to inadequate data for this method in this assessment.

Int LOS: Integrated level of support. This is the overall level of support for this use, method, parameter group, which could be different from t he LOS (described above) due to carry forward information or other types of changes. New Code added in 2010: PI = Pending Issue

TCEQ Cause: This is the impairment description (e.g., bacteria, depressed dissolved oxygen, etc.) Cat: Category 3: Insufficient or no data and information to determine if standard is attained

Category 4: Standard is not attained or nonattainment is predicted in the near future due to one or more parameters, but no TMDLs are required. 4a - All TMDLs have been completed and approved by EPA. 4b - Other pollution control requirements are reasonably expected to result in the attainment of the water qualit y standard in the near future. 4c - Nonattainment of the standard for one or more parameters is shown to be caused by pollution, n ot by pollutants and that the water quality conditions cannot be changed by the allocation and control of pollutants through the TMDL process.

Category 5: Standard is not attained or nonattainment is predicted in the near future for one or more parameters. 5a - TMDLs are underway, scheduled, or may be scheduled for one or more parameters. 5b - review of the standards for one or more parameters will be conducted before a management strategy is selected, including a possible revision to the water quality standards. 5c - Additional data or information will be collected and/or evaluated for one or more parameters before a man agement strategy is selected.

Page 1 of 64May 12, 2020


SEGID: 1101 Clear Creek Tidal

AUID: 1101_01 Upper segment boundary to Chigger Creek confluence

Period of RecordMethod Parameter Criteria LOS CatCF# Value # ValueDataQual

IntLOS

Recreation Use Data Assessed Exceedances

TCEQ Cause

4aNSNAID 35EnterococcusBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water


IntLOS

Fish Consumption Use Data Assessed Exceedances

TCEQ Cause

NANAID 0.03 0 1PCBsBioaccumulative Toxics in fish tissue o12/01/11 - 11/30/18

5aNSNSOERestricted and No-ConsumptionDSHS Advisories, Closures, and Risk Assessments o12/01/11 - 11/30/18 Dioxin in edible tissue

5aNSNSOERestricted and No-ConsumptionDSHS Advisories, Closures, and Risk Assessments o12/01/11 - 11/30/18 PCBs in edible tissue

Page 2 of 64May 12, 2020


AUID: 1101_02 Chigger Creek confluence to IH 45


IntLOS

Aquatic Life Use Data Assessed Exceedances

TCEQ Cause

FSFSAD 3 0 28Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18

NCNCAD 4 3.74 3 28Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

4aNSNSAD 35 70.20 1 27EnterococcusBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS

General Use Data Assessed Exceedances

TCEQ Cause

FSFSAD 9 0 28pHHigh pH o12/01/11 - 11/30/18

FSFSAD 6.50 0 28pHLow pH o12/01/11 - 11/30/18

NCNCAD 0.46 0.95 4 28AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18

CSCSAD 1.10 3.13 23 28NitrateNutrient Screening Levels o12/01/11 - 11/30/18 Nitrate in water

CSCSAD 0.66 1.11 20 28Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18 Total Phosphorus in water

FSFSAD 35 0 28Water temperatureWater Temperature o12/01/11 - 11/30/18


IntLOS


TCEQ Cause




Page 3 of 64May 12, 2020


AUID: 1101_03 IH 45 to Cow Bayou confluence


IntLOS


TCEQ Cause


CSCSAD 4 3.67 5 27Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18


NCNCAD 21 40.48 4 27Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18





IntLOS


TCEQ Cause




Page 4 of 64May 12, 2020


AUID: 1101_04 Cow Bayou confluence to confluence with Clear Lake


IntLOS


TCEQ Cause



NANAID 180 0 1PCBsToxic Substances in sediment o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

FSFSAD 35 19.01 0 42EnterococcusBacteria Geomean o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

FSFSAD 9 9.10 1 43pHHigh pH o12/01/11 - 11/30/18

FSFSAD 6.50 0 43pHLow pH o12/01/11 - 11/30/18


CSCSLD 21 36.00 2 4Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18 Chlorophyll-a in water


NCNCAD 0.66 0.86 10 42Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18



IntLOS


TCEQ Cause




Page 5 of 64May 12, 2020


SEGID: 1101A Magnolia Creek

AUID: 1101A_01 From the Clear Creek Tidal confluence upstream 7.7 km (4.8 mi)


IntLOS


TCEQ Cause

FSFSAD 4 0 14Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average o12/01/11 - 11/30/18

FSFSAD 3 0 14Dissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum o12/01/11 - 11/30/18

NAFSSM 3 0 29Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18

NANCSM 4 0 29Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

4aNSNSAD 126 507.28 1 26E. coliBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




Page 6 of 64May 12, 2020


SEGID: 1101B Chigger Creek

AUID: 1101B_01 From the headwaters to FM 528


IntLOS


TCEQ Cause

FSFSAD 2 1.30 1 25Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


NCNCAD 1.95 0 28NitrateNutrient Screening Levels o12/01/11 - 11/30/18


Page 7 of 64May 12, 2020


SEGID: 1101C Cow Bayou

AUID: 1101C_01 From the Clear Creek Tidal confluence to SH3


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


NCNCAD 1.10 1.56 2 24NitrateNutrient Screening Levels o12/01/11 - 11/30/18


Page 8 of 64May 12, 2020


SEGID: 1101D Robinson Bayou

AUID: 1101D_01 From headwater to Abilene St


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 9 of 64May 12, 2020


AUID: 1101D_02 From Abilene St. to confluence with Clear Creek Tidal


IntLOS


TCEQ Cause

CSNAID 4Dissolved Oxygen GrabDissolved Oxygen grab screening level þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause


Page 10 of 64May 12, 2020


SEGID: 1101E Unnamed Trib of Clear Creek Tidal

AUID: 1101E_01 From the Clear Creek Tidal confluence to a point 3.0 km (1.9 mi) upstream


IntLOS


TCEQ Cause

5cNSNSLD 4 1.48 6 8Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average o12/01/11 - 11/30/18 Depressed dissolved oxygen in water

5cNSNSLD 3 0.27 7 8Dissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum o12/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause


Page 11 of 64May 12, 2020


SEGID: 1101F Unnamed Tributary of Clear Creek Tidal

AUID: 1101F_01 From the Clear Creek Tidal confluence to a point 7.9 km (4.9 mi) upstream (immediately downstream of IH 45)


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause




Page 12 of 64May 12, 2020


SEGID: 1102 Clear Creek Above Tidal

AUID: 1102_01 Upper segment boundary (Rouen Road) to SH 288


IntLOS


TCEQ Cause

FSFSAD 200 80.36 0 75ChlorideDissolved Solids o12/01/11 - 11/30/18

FSFSAD 100 31.88 0 77SulfateDissolved Solids o12/01/11 - 11/30/18

FSFSAD 600 405.90 0 81Total Dissolved SolidsDissolved Solids o12/01/11 - 11/30/18


IntLOS


TCEQ Cause


Page 13 of 64May 12, 2020


AUID: 1102_02 SH 288 to Hickory Slough confluence


IntLOS


TCEQ Cause



CSNAIDHabitatHabitat þ12/01/11 - 11/30/18 Impaired habitat in water


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 26pHLow pH o12/01/11 - 11/30/18

CSCSAD 0.33 2.52 7 24AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18 Ammonia in water

NCNCAD 14.10 22.20 1 26Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18





IntLOS


TCEQ Cause


Page 14 of 64May 12, 2020


AUID: 1102_03 Hickory Slough confluence to Turkey Creek confluence


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 28pHLow pH o12/01/11 - 11/30/18






IntLOS


TCEQ Cause


Page 15 of 64May 12, 2020


AUID: 1102_04 Turkey Creek confluence to Mary's Creek confluence


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18


NCNCAD 14.10 0 27Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18





IntLOS


TCEQ Cause


Page 16 of 64May 12, 2020


AUID: 1102_05 Mary's Creek confluence to lower segment boundary


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




CSNAIDNitrateNutrient Screening Levels þ12/01/11 - 11/30/18 Nitrate in water


IntLOS


TCEQ Cause


Page 17 of 64May 12, 2020


SEGID: 1102A Cowart Creek

AUID: 1102A_01 Sunset Drive to SH 35


IntLOS


TCEQ Cause

NCNCLD 2 0 4Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18

NCNCLD 3 0 4Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

4aNSNAID 126 132.57 1 4E. coliBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause

NCNCLD 0.33 0 4AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18

NCNCLD 1.95 0 4NitrateNutrient Screening Levels o12/01/11 - 11/30/18

NCNCLD 0.69 0 4Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18

Page 18 of 64May 12, 2020


AUID: 1102A_02 Confluence with Clear Creek to Sunset Drive


IntLOS


TCEQ Cause


NCNCAD 3 0 28Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 19 of 64May 12, 2020


SEGID: 1102B Mary's Creek/ North Fork Mary's Creek

AUID: 1102B_01 From the Clear Creek Above Tidal confluence upstream to the N. and S. Fork Mary's Creek near FM 1128


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 20 of 64May 12, 2020


SEGID: 1102C Hickory Slough

AUID: 1102C_01 From the Clear Creek Above Tidal confluence to a point 0.69 km (0.43 mi) upstream of Mykawa Road


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause

FSFSAD 126 93.40 0 26E. coliBacteria Geomean o12/01/11 - 11/30/18


IntLOS


TCEQ Cause




Page 21 of 64May 12, 2020


SEGID: 1102D Turkey Creek

AUID: 1102D_01 From the Clear Creek Above Tidal confluence to a point 0.98 km (0.61 mi) upstream of Scarsdale Blvd


IntLOS


TCEQ Cause


CSCSLD 5 3.93 3 9Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause

4aNSCNLD 126 262.05 1 9E. coliBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause

CSCSLD 0.33 0.83 4 9AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18 Ammonia in water

CSCSLD 1.95 7.75 6 9NitrateNutrient Screening Levels o12/01/11 - 11/30/18 Nitrate in water

CSCSLD 0.69 1.11 6 9Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18 Total Phosphorus in water

Page 22 of 64May 12, 2020


SEGID: 1102E Mud Gully

AUID: 1102E_01 From the Clear Creek Above Tidal confluence to a point 0.80 km (0.49 mi) downstream of Hughes Road


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause

CSNAID 1.95NitrateNutrient Screening Levels þ12/01/11 - 11/30/18 Nitrate in water

Page 23 of 64May 12, 2020


SEGID: 1102F Mary's Creek Bypass

AUID: 1102F_01 From the Mary's Creek confluence NE of FM 518 to a point 0.96 km (0.60 mi) upstream to the Mary's Creek confluence (NW of County Road 126)


IntLOS


TCEQ Cause


CSNCLD 5 0 8Dissolved Oxygen GrabDissolved Oxygen grab screening level þ09/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause

4aNSCNLD 126 360.40 1 8E. coliBacteria Geomean þ09/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause

NCNCLD 0.33 0.53 3 9AmmoniaNutrient Screening Levels o09/01/11 - 11/30/18

NCNCLD 1.95 5.08 3 9NitrateNutrient Screening Levels o09/01/11 - 11/30/18


Page 24 of 64May 12, 2020


SEGID: 1102G Unnamed Tributary of Mary's Creek

AUID: 1102G_01 From the Mary's Creek confluence 1.3 km (0.84 mi) west of FM 1128 to a point 1.2 km (0.75 mi) upstream to the confluence of an unnamed tributary


IntLOS


TCEQ Cause

NANAID 3 0 1Dissolved Oxygen GrabDissolved Oxygen grab minimum o09/01/11 - 11/30/18

NANAID 5 0 1Dissolved Oxygen GrabDissolved Oxygen grab screening level o09/01/11 - 11/30/18


IntLOS


TCEQ Cause

4aNSNAID 126 24,000 1 1E. coliBacteria Geomean þ09/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause


NCNCLD 1.95 2.16 1 4NitrateNutrient Screening Levels o09/01/11 - 11/30/18

NCNCLD 0.69 0.80 1 4Total PhosphorusNutrient Screening Levels o09/01/11 - 11/30/18

Page 25 of 64May 12, 2020


SEGID: 1103 Dickinson Bayou Tidal

AUID: 1103_01 From the Dickinson Bay confluence (downstream of State Hwy 146) upstream to the Gum Bayou confluence


IntLOS


TCEQ Cause

5bNSFSAD 3 0 25Dissolved Oxygen GrabDissolved Oxygen grab minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18

NCNCAD 0.46 0 28AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18





IntLOS


TCEQ Cause



Page 26 of 64May 12, 2020


AUID: 1103_02 From the Gum Bayou confluence upstream to the Benson Bayou confluence


IntLOS


TCEQ Cause

5bNSNAIDDissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

5bNSNAIDDissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

NAFSSM 3 3.01 4 27Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18

NACSSM 4 3.15 7 27Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18




NCNCAD 0.66 0 23Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18



IntLOS


TCEQ Cause



Page 27 of 64May 12, 2020


AUID: 1103_03 From the Benson Bayou confluence upstream to the Bordens Gully confluence


IntLOS


TCEQ Cause

5bNSNAIDDissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

5bNSNAIDDissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

NANASM 3 2.55 1 1Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18

NANASM 4 2.55 1 1Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18

NANAID 70 0 1ArsenicToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 9.60 0 1CadmiumToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 370 0 1ChromiumToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 270 0 1CopperToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 218 0 1LeadToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 0.71 0 1MercuryToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 51.60 0 1NickelToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 3.70 0 1SilverToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 410 0 1ZincToxic Substances in sediment o12/01/11 - 11/30/18


IntLOS


TCEQ Cause

4aNSNAIDEnterococcusBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water

Page 28 of 64May 12, 2020


AUID: 1103_03 From the Benson Bayou confluence upstream to the Bordens Gully confluence


IntLOS


TCEQ Cause

NANAID 9 0 1pHHigh pH o12/01/11 - 11/30/18

NANAID 6.50 0 1pHLow pH o12/01/11 - 11/30/18

NANAID 0.46 0 1AmmoniaNutrient Screening Levels o12/01/11 - 11/30/18

NANAID 21 73.70 1 1Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18

NANAID 1.10 0 1NitrateNutrient Screening Levels o12/01/11 - 11/30/18

NANAID 0.66 0 1Total PhosphorusNutrient Screening Levels o12/01/11 - 11/30/18

NANAID 35 0 1Water temperatureWater Temperature o12/01/11 - 11/30/18


IntLOS


TCEQ Cause



Page 29 of 64May 12, 2020


AUID: 1103_04 From the Bordens Gully confluence upstream to a point 4.0 km (2.5 mi) downstream of FM 517


IntLOS


TCEQ Cause

5bNSNSAD 3 1.92 17 54Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 55pHLow pH o12/01/11 - 11/30/18







IntLOS


TCEQ Cause



Page 30 of 64May 12, 2020


SEGID: 1103A Bensons Bayou

AUID: 1103A_01 From the Dickinson Bayou Tidal confluence to point 0.6 km (0.37 mi) upstream of FM 646


IntLOS


TCEQ Cause

5bNSNSAD 3 2.19 8 33Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 31 of 64May 12, 2020


SEGID: 1103B Bordens Gully

AUID: 1103B_01 From the Dickinson Bayou Tidal confluence to a point 1.4 km (0.87 mi) upstream of FM 646


IntLOS


TCEQ Cause

5cNSFSAD 3 2.51 7 49Dissolved Oxygen GrabDissolved Oxygen grab minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 32 of 64May 12, 2020


SEGID: 1103C Geisler Bayou

AUID: 1103C_01 From the Dickinson Bayou Tidal confluence to a point 1.37 km (0.85 mi) upstream of FM 646


IntLOS


TCEQ Cause

5bNSFSAD 3 2.11 5 33Dissolved Oxygen GrabDissolved Oxygen grab minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 33 of 64May 12, 2020


SEGID: 1103D Gum Bayou

AUID: 1103D_01 From Dickinson Bayou Tidal confluence to State Hwy 96


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 34 of 64May 12, 2020


SEGID: 1103E Cedar Creek

AUID: 1103E_01 From the Dickinson Bayou Tidal confluence to a point 0.63 km (0.39 mi) upstream FM 517


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 35 of 64May 12, 2020


SEGID: 1103F Unnamed Tributary of Dickinson Bayou Tidal

AUID: 1103F_01 From the Dickinson Bayou Tidal confluence to a point 0.36 km (0.22 mi upstream of State Hwy 6


IntLOS


TCEQ Cause

5cNSNSAD 3 2.33 6 20Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





Page 36 of 64May 12, 2020


SEGID: 1103G Unnamed Tributary of Gum Bayou

AUID: 1103G_01 From the confluence with Gum Bayou to a point 0.39 mi south of the FM 646/FM 1266 intersection between League City and Dickinson


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 37 of 64May 12, 2020


SEGID: 1104 Dickinson Bayou Above Tidal

AUID: 1104_01 From the lower segment boundary (a point 4.0 km [2.5 mi] downstream of FM 517) to FM 517


IntLOS


TCEQ Cause

4aNSNAID 126E. coliBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




Page 38 of 64May 12, 2020


AUID: 1104_02 From FM 517 upstream to FM 528


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18





FSFSAD 32.20 0 27Water temperatureWater Temperature o12/01/11 - 11/30/18

Page 39 of 64May 12, 2020


SEGID: 1105 Bastrop Bayou Tidal

AUID: 1105_01 From the confluence with Bastrop Bay 1.1 km (0.7 mi) downstream of the Intracoastal Waterway in Brazoria County to a point 8.6 km (5.3 mi) upstream of Business 288 at Lake Jackson in Brazoria County


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause

5cNSNSAD 35 58.13 1 138EnterococcusBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause


FSFSAD 6.50 0 143pHLow pH o12/01/11 - 11/30/18






Page 40 of 64May 12, 2020


SEGID: 1105A Flores Bayou

AUID: 1105A_03 From the confluence with Austin Bayou Above Tidal upstream to the a point 2.6 km (1.6 mi) downstream of County Road 171


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause

5bNSNSAD 126 158.25 1 25E. coliBacteria Geomean o09/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




Page 41 of 64May 12, 2020


SEGID: 1105B Austin Bayou Tidal

AUID: 1105B_01 From the Bastrop Bayou Tidal confluence to the confluence with Brushy Bayou in Brazoria County


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause

5cNSNSAD 35 77.80 1 57EnterococcusBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause





Page 42 of 64May 12, 2020


SEGID: 1105C Austin Bayou Above Tidal

AUID: 1105C_01 From the confluence of Bastrop Bayou upstream (Austin Bayou Tidal upper boundary) to 0.3 km (0.19 mi) upstream of SH 288 in Brazoria County


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause

5bNSNSAD 126 258.32 1 25E. coliBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




Page 43 of 64May 12, 2020


SEGID: 1105D Unnamed Tributary of Bastrop Creek

AUID: 1105D_01 From the Bastrop Bayou Tidal confluence to 0.57 km (0.35 mi) upstream of SH 288 Bus in Brazoria County


IntLOS


TCEQ Cause

NACNSM 5 3.25 2 5Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average o12/01/11 - 11/30/18

NANSSM 3 1.77 3 5Dissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum o12/01/11 - 11/30/18




IntLOS


TCEQ Cause

FSFSAD 126 72.86 0 23E. coliBacteria Geomean o12/01/11 - 11/30/18


IntLOS


TCEQ Cause




Page 44 of 64May 12, 2020


SEGID: 1105E Brushy Bayou

AUID: 1105E_01 From the confluence with Austin Bayou Above Tidal (1105C) upstream to end of canal approximately 0.4 mi upstream of FM 210 crossing east of the City of Angleton in Brazoria County.


IntLOS


TCEQ Cause

5cNSNCLD 3 0 8Dissolved Oxygen GrabDissolved Oxygen grab minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

CSNCLD 5 3.70 1 8Dissolved Oxygen GrabDissolved Oxygen grab screening level þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water


IntLOS


TCEQ Cause

5bNSCNLD 126 188.65 1 8E. coliBacteria Geomean þ12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




Page 45 of 64May 12, 2020


SEGID: 1107 Chocolate Bayou Tidal

AUID: 1107_01 From the Chocolate Bay confluence 1.4 km (0.9 mi) downstream of FM 2004 to a point 4.2 km (2.6 mi) downstream of SH 35


IntLOS


TCEQ Cause



NANAID 180 0 1PCBsToxic Substances in sediment o12/01/11 - 11/30/18


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 79pHLow pH o12/01/11 - 11/30/18







IntLOS


TCEQ Cause

NANAID 0.03 0.03 1 1PCBsBioaccumulative Toxics in fish tissue o12/01/11 - 11/30/18



Page 46 of 64May 12, 2020


SEGID: 1108 Chocolate Bayou Above Tidal

AUID: 1108_01 From a point 4.2 km (2.6 mi) downstream of SH 35 to SH 6


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 24pHLow pH o12/01/11 - 11/30/18






Page 47 of 64May 12, 2020


SEGID: 1109 Oyster Creek Tidal

AUID: 1109_01 From the Intracoastal Waterway confluence to a point 100 m (110 yds) upstream of FM 2004


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 56pHLow pH o12/01/11 - 11/30/18






Page 48 of 64May 12, 2020


SEGID: 1110 Oyster Creek Above Tidal

AUID: 1110_01 From a point 100 meters (110 yards) upstream of FM 2004 in Brazoria County upstream to the Styles Bayou confluence


IntLOS


TCEQ Cause

5cNSNAIDDissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

5cNSNAIDDissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water





IntLOS


TCEQ Cause



IntLOS


TCEQ Cause





FSFSAD 6.50 0 32pHLow pH o12/01/11 - 11/30/18


NCNCAD 14.10 84.97 3 27Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18




Page 49 of 64May 12, 2020


AUID: 1110_02 From Styles Bayou upstream to an unnamed tributary [2.9 km (1.8 mi) downstream of FM 1462]


IntLOS


TCEQ Cause


NCNCLD 5 3.70 2 9Dissolved Oxygen GrabDissolved Oxygen grab screening level o12/01/11 - 11/30/18


CNNAIDMacrobenthic CommunityMacrobenthic community (Qualitative) þ12/01/11 - 11/30/18 Impaired macrobenthic community in water


IntLOS


TCEQ Cause

CNCNLD 126 186.52 1 9E. coliBacteria Geomean o12/01/11 - 11/30/18 Bacteria in water


IntLOS


TCEQ Cause




NCNCLD 9 0 9pHHigh pH o12/01/11 - 11/30/18

NCNCLD 6.50 0 9pHLow pH o12/01/11 - 11/30/18


NCNCLD 1.95 0 4NitrateNutrient Screening Levels o12/01/11 - 11/30/18


NCNCLD 32.20 0 9Water temperatureWater Temperature o12/01/11 - 11/30/18

Page 50 of 64May 12, 2020


AUID: 1110_03 From an unnamed tributary [2.9 km (1.8 mi) downstream of FM 1462] upstream to a point 4.3 km (2.7 mi) upstream of Scanlan Road in Fort Bend County


IntLOS


TCEQ Cause

5cNSNAID 5Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water

5cNSNAID 3Dissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water



IntLOS


TCEQ Cause




Page 51 of 64May 12, 2020


SEGID: 1111 Old Brazos River Channel Tidal

AUID: 1111_01 From the Intercoastal Waterway confluence to SH 288 in Brazoria County

Page 52 of 64May 12, 2020




IntLOS


TCEQ Cause



NANAID 35,860 0 21,1,1-TrichloroethaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 3,690 0 21,1,2,2-TetrachloroethaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 1,800 0 21,1,2-TrichloroethaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 92,470 0 21,1-DichloroethyleneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 1,640 0 11,2,4,5-TetrachlorobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 2,320 0 41,2,4-TrichlorobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 4,440 0 41,2-DichlorobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 26,260 0 21,2-DichloroethaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 21,520 0 21,2-DichloropropaneToxic Substances in sediment o12/01/11 - 11/30/18



NCNCLD 29 0 42,4-DimethylphenolToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 14,960 0 42,4-dinitrotolueneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 670 0 42-MethylnaphthaleneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 272,060 0 24-Methyl-2-Pentanone (MIBK)Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 500 0 4AcenaphtheneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 640 0 4AcenaphthyleneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 1,003,360 0 2AcetoneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 3,240 0 2AcrylonitrileToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,100 0 4AnthraceneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 709 0 4Arachlor 1254Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 70 0 6ArsenicToxic Substances in sediment o12/01/08 - 11/30/18

NANAID 4,080 0 2BenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,600 0 4Benzo(a)anthraceneToxic Substances in sediment o12/01/11 - 11/30/18

Page 53 of 64May 12, 2020




IntLOS


TCEQ Cause

NCNCLD 1,600 0 4Benzo(a)pyreneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 2,647 0 4Bis(2-ethylhexyl)phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 10,670 0 2BromoformToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 9.60 0 6CadmiumToxic Substances in sediment o12/01/08 - 11/30/18

NANAID 36,740 0 1Carbon tetrachlorideToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 4.79 0 4ChlordaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 8,180 0 2ChlorobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 8,860 0 2ChloroformToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 52,430 0 2ChloromethaneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 370 0 3ChromiumToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 2,800 0 4ChryseneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 270 0 6CopperToxic Substances in sediment o12/01/08 - 11/30/18

NCNCLD 7.81 0 4DDDToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 374 0 4DDEToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 4.77 0 4DDTToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 260 0 4Dibenz(a,h)anthraceneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 4.30 0 4DieldrinToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,100 0 4Diethyl phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 530 0 4Dimethyl phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 17,000 0 4Di-n-butyl phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 45,000 0 4Di-n-octyl phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 62.40 0 4EndrinToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 4,100 0 1EthylbenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 5,100 0 4FluorantheneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 540 0 4FluoreneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 0.99 0 4gamma-BHC (Lindane)Toxic Substances in sediment o12/01/11 - 11/30/18

Page 54 of 64May 12, 2020




IntLOS


TCEQ Cause

NCNCLD 2.74 0 4HeptachlorToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 670 0 4Hexachlorobutadiene (HCBD)Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,060 0 4HexachlorocyclopentadieneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 5,640 0 4HexachloroethaneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 218 0 6LeadToxic Substances in sediment o12/01/08 - 11/30/18

NCNCLD 0.71 0 6MercuryToxic Substances in sediment o12/01/08 - 11/30/18

NANAID 22,940 0 2Methylene chlorideToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 2,100 0 4NaphthaleneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 640 0 4N-butyl benzyl phthalateToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 51.60 0 4NickelToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 8,000 0 4NitrobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 300 0 4Parathion (ethyl)Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 180 388.00 1 4PCBsToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 44,350 0 1PentachlorobenzeneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 690 0 4Pentachlorophenol (PCP)Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,500 0 4PhenanthreneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 1,200 0 4Phenol (single compound)Toxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 2,600 0 4PyreneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 3.70 0 6SilverToxic Substances in sediment o12/01/08 - 11/30/18

NANAID 22,310 0 2StyreneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 3,210 0 1TetrachloroetheneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 7,750 0 2TolueneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 7,300 0 2TrichloroetheneToxic Substances in sediment o12/01/11 - 11/30/18

NANAID 7,620 0 2XyleneToxic Substances in sediment o12/01/11 - 11/30/18

NCNCLD 410 0 6ZincToxic Substances in sediment o12/01/08 - 11/30/18

Page 55 of 64May 12, 2020




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 27pHLow pH o12/01/11 - 11/30/18






Page 56 of 64May 12, 2020


SEGID: 1113 Armand Bayou Tidal

AUID: 1113_01 From the Clear Lake confluence at Nasa Road 1 to the Horsepen Bayou confluence


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 44pHLow pH o12/01/11 - 11/30/18







IntLOS


TCEQ Cause

5cNSNSOERestricted and No-ConsumptionDSHS Advisories, Closures, and Risk Assessments o12/01/11 - 11/30/18 Dioxin in edible tissue

5cNSNSOERestricted and No-ConsumptionDSHS Advisories, Closures, and Risk Assessments o12/01/11 - 11/30/18 PCBs in edible tissue

Page 57 of 64May 12, 2020


AUID: 1113_02 From the Horsepen Bayou confluence to the Big Island Slough confluence


IntLOS


TCEQ Cause

5bNSNAID 3Dissolved Oxygen 24hr MinDissolved Oxygen 24hr minimum þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 89pHLow pH o12/01/11 - 11/30/18


CSCSAD 21 62.50 18 27Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18 Chlorophyll-a in water





IntLOS


TCEQ Cause



Page 58 of 64May 12, 2020


AUID: 1113_03 From the Big Island Slough confluence upstream to a point 0.8 km (0.5 mi) downstream of Genoa-Red Bluff Road


IntLOS


TCEQ Cause

5bNSNAID 4Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water


NANSSM 3 1.87 6 25Dissolved Oxygen GrabDissolved Oxygen grab minimum o12/01/11 - 11/30/18



IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


FSFSAD 6.50 0 25pHLow pH o12/01/11 - 11/30/18







IntLOS


TCEQ Cause



Page 59 of 64May 12, 2020


SEGID: 1113A Armand Bayou Above Tidal

AUID: 1113A_01 From the upper segment boundary of Armand Bayou Tidal 0.8 km (0.5 mi) downstream of Genoa-Red Bluff Road) upstream to Beltway 8


IntLOS


TCEQ Cause

5bNSNAID 5Dissolved Oxygen 24hr AvgDissolved Oxygen 24hr average þ12/01/11 - 11/30/18 Depressed dissolved oxygen in water




5bNSNAIDFish CommunityFish community (Regional) þ12/01/11 - 11/30/18 Impaired fish community in water

5bNSNAIDMacrobenthic CommunityMacrobenthic community (Qualitative) þ12/01/11 - 11/30/18 Impaired macrobenthic community in water


IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 60 of 64May 12, 2020


SEGID: 1113B Horsepen Bayou Tidal

AUID: 1113B_01 From the Armand Bayou confluence to the SH3


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause


CSCSAD 21 53.46 16 54Chlorophyll-aNutrient Screening Levels o12/01/11 - 11/30/18 Chlorophyll-a in water



Page 61 of 64May 12, 2020


SEGID: 1113C Unnamed Tributary to Horsepen Bayou

AUID: 1113C_01 From the Horsepen Bayou confluence to Reseda Drive


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 62 of 64May 12, 2020


SEGID: 1113D Willow Springs Bayou

AUID: 1113D_01 From the Armand Bayou confluence to a point 2.8 km (1.8 mi) upstream to an unnamed tributary


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 63 of 64May 12, 2020


SEGID: 1113E Big Island Slough

AUID: 1113E_01 From the Armand Bayou confluence upstream to a point 2.4 km (1.5 mi) north of Spencer Hwy


IntLOS


TCEQ Cause




IntLOS


TCEQ Cause



IntLOS


TCEQ Cause




Page 64 of 64May 12, 2020

Documents

2020 Texas Integrated Report - Assessment Results for ... · 2020 Texas Integrated Report - Assessment Results for Basin 11 - San Jacinto-Brazos Coastal Basin Report Abb Descreviationsription: