| Metadata for WRIM Station Pages |
| HTML Page Created 14MAY2020 |
| Data | Source | Date downloaded/created | Variables | Observations | Description |
|---|---|---|---|---|---|
| Events | TCEQ | 10/07/2019 | 14 | 1168591 | Sample events file from TCEQ SWQMIS Database - All Data |
| Results | TCEQ | 10/07/2019 | 9 | 12463282 | Sample results file from TCEQ SWQMIS Database- All Data |
| wrim.raw | H-GAC-Hoffman | 10/07/2019 | 20 | 12433194 | Statewide data, compiled events/results, data processing using SAS |
| wrim.data | H-GAC-Hoffman | 10/07/2019 | 32 | 928678 | Compiled events/results, data processing using SAS, H-GAC CRP CMS |
| Water Quality Standards | TCEQ | 02/09/2015 | n/a | n/a | Texas Surface Water Quality Standards TAC 307- transcribed by H-GAC |
| Screening Levels | TCEQ | 02/25/2016 | n/a | n/a | Draft 2016 Guidance for Assessing and Reporting Surface Water Quality in Texas |
| Impairments / Concerns | TCEQ | 10/31/2018 | 28 | 30357 | 2016 IR AssessmentResults from L. Ryckman, 12/19/16, edited 10/31/18 after final 2016 IR |
| Station/AU assignments | TCEQ | 12/05/2017 | 2 | 436 | Table of station/ AU assignments for 2018 IR from P. Bohanon; additional AU from HGAC records |
| Monitoring Station Information | TCEQ | 02/11/2019 | 49 | 9922 | Station inventory report |
| Stream Segment Information | TCEQ | 08/30/2016 | 9 | 1161 | Segment descriptions |
| H-GAC region stations | H-GAC | 06/13/2019 | 9 | 559 | GIS data from H-GAC GIS Team (HGAC CMS + additional stations in bordering AU) |
| CMS Stations | LCRA | 02/11/2019 | 25 | 542 | Region 12 CMS from LCRA; HGAC = SE: 341 |
| Watershed descriptions | H-GAC | 10/21/2010 | 4 | 53 | General watershed information compiled for 2011 BSR |
| Water Quality Montoring Station 11145 |
| Link to TCEQ Watershed Data |
| All data from this station, assessment unit, and/or segment can be downloaded from the links below (CSV Format) |
| Click the link with right mouse button and select 'Save Link [target] As' |
| Station Data |
| AU Data |
| Station Description | Water Body | Water Body Type | Watershed | Segment | TCEQ Assessment Unit | Latitude | Longitude | Summer Photo | Winter Photo | Access Database Download Link | USGS Flow Gauge Data |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Buffalo Bayou Immediately Downstream Of Green Bush Road 3.1 Miles Southeast Of Katy | Buffalo Bayou/Barker Reservoir | Unclassified Freshwater Stream | Buffalo Bayou Above Tidal | 1014 | 1014B_01 | 29.74305500000 | -95.80666400000 | Summer Picture | Winter Picture | Data Download Page | USGS Flow Gauge Data |
| General Monitoring Information |
| Data Collector | Oldest Sampling Event in TCEQ Database | Most Recent Sampling Event in TCEQ Database | Frequency | Parameter Groups |
|---|---|---|---|---|
| Houston-Galveston Area Council | 10/01/2007 | 04/10/2019 | Quarterly | Field, Conventional, Bacteria |
| U.S. Geological Survey | 02/29/2000 | 03/20/2001 | Quarterly | Field, Conventional, Bacteria |
| Watershed Information |
| Watershed | Segment ID | Water Body | Segment Definition | Watershed Description | Water Quality Issues | Watershed Map |
|---|---|---|---|---|---|---|
| Buffalo Bayou Above Tidal | 1014 | Buffalo Bayou/Barker Reservoir | From a point immediately upstream of Shepherd Drive upstream to SH 6. Sub-Segment 1014A: Bear Creek (unclassified water body).From the confluence with South Mayde Creek to a point upstream of an unnamed tributary 1.24 km (0.77 mi) north of Langenbaugh Road. Sub-Segment 1014B: Buffalo Bayou/Barker Reservoir (unclassified water body). From Barker Dam upstream to the Willow Fork Buffalo Bayou confluence. Sub-Segment 1014E: Langham Creek (unclassified water body). From the Bear Creek confluence upstream to the Dinner Creek confluence. Sub-Segment 1014H: South Mayde Creek (unclassified water body). From the Buffalo Bayou confluence upstream to the confluence with an unnamed tributary 0.62 km (0.39 mi) east of Barker-Cypress Road. Sub-Segment 1014K: Turkey Creek (unclassified water body). From the South Mayde Creek confluence upstream to 0.17 km (0.1 mi) south of Clay Road. Sub-Segment 1014L: Mason Creek (unclassified water body). From the Buffalo Bayou confluence upstream to Mason Road. Sub-Segment 1014M: Newman | This segment extends from the heavily developed areas of Houston’s urban core west and north through dense residential areas to the primarily rural and agricultural areas of western Harris County. Buffalo Bayou Above Tidal drains into Buffalo Bayou Tidal and then into the Houston Ship Channel and the Galveston Bay system. It drains an area that includes both Barker and Addicks reservoirs in its western portion and thus is affected greatly by the amount of water being released at any given time from their dams. Large tracts of land in the northwest areas of the segment are dedicated to cultivated crops or ranch activities. East of State Highway 6, the Bayou is primarily a wooded waterway immediately adjacent to parkland (Terry Hershey Park) or primarily affluent urban residential areas and golf courses. There are not an appreciable number of industrial facilities in this segment. Because of the narrow and deep profile of the Bayou, recreational activity consists primarily of canoeing and kayaking and limited s | All of the watershed sub-segments have bacteria levels high enough to render them impaired under the contact recreation standard of a geometric mean of 126 MPN/100mL. One assessment unit (AU) of one sub-segment (1014H_02) was not listed on the 2008 Texas Integrated Report (IR), but, subsequently, was listed as impaired on the Draft 2010 IR. The bacteria levels ranged from geomeans of 410 to 2,829 MPN/100mL, or moderate to significant impairment. However, in areas of Buffalo Bayou bacteria levels can fluctuate greatly based on releases from the Addicks and Barker dams upstream. The watershed generally supports the aquatic life use, although one sub-segment (1014M) had impairments for both dissolved oxygen (DO) and macrobenthic and fish communities. The DO impairments remained relatively the same as that in the 2008 IR for that sub-segment although one sub-segment (1014N) listed as having a concern in 2008 was not listed in 2010. Eight of the 12 Buffalo Bayou watershed sub-segments had select nutrients concerns | Watershed Map |
| In general, the discussion of water quality issues applies only to classified portions of the watershed |
| Designated Uses for the Water Body |
| Designated Use | Aquatic Life Use | ALU Designation Source | Fishery Type |
|---|---|---|---|
| Recreation Use | Intermediate | TSWQS Appendix D | Incidental |
| General Use | Intermediate | TSWQS Appendix D | Incidental |
| Aquatic Life Use | Intermediate | TSWQS Appendix D | Incidental |
| Additional information on aquatic life uses for unclassified water bodies can be found in Appendix D of the 2014 TCEQ Water Quality Standards |
| Current Standards (30 TAC Chapter 307) |
| Water Quality Standards and Screening Levels |
| Parameter | Criterion Type | Standard or Screening Level |
|---|---|---|
| Ammonia-N | 2014 TCEQ Screening Level | 0.33 mg/L |
| Chlorophyll a | 2014 TCEQ Screening Level | 14.1 Micrograms / L |
| Dissolved Oxygen (24-hour Mean/ Grab Screening Level) | 2014 Water Quality Standard | 4.0 mg/L |
| Dissolved Oxygen (24-hour Minimum / Grab Minimum) | 2014 Water Quality Standard | 3.0 mg/L |
| Dissolved Oxygen (grab) | 2014 Water Quality Standard | 4.0 mg/L |
| E. Coli | 2014 Water Quality Standard | 126 MPN/100 mL |
| Nitrate+nitrite | 2014 TCEQ Screening Level | 1.95 Mg/L |
| Nitrate-N | 2014 TCEQ Screening Level | 1.95 Mg/L |
| Orthophosphate-P | 2014 TCEQ Screening Level | 0.37 mg/L |
| Total Phosphorus | 2014 TCEQ Screening Level | 0.69 mg/L |
| Source: Chapter 307 of the Texas Administrative Code (6/30/10) and current TCEQ nutrient screening levels (8/25/10) |
| TCEQ does not assess unclassified water bodies against general use criteria (temperature, pH, total dissolved solids, chloride, and sulfate); These criteria are included for reference only |
| EPA-Approved Texas Water Quality Standards |
| TCEQ Water Quality Standards Information |
| Description of Water Quality Parameters |
| Summary of Water Quality Impairments and Concerns |
| Station ID | Bacteria Impairment | Low Dissolved Oxygen | Nutrient Screening Levels Exceeded for One or More Nutrients | PCB Dioxin Impairment |
Impaired Macrobenthic Community | Impaired Fish Community | Habitat Impairment | Mercury Impairment | Sediment Toxicity | Shellfish Harvesting Restrictions | DSHS Fish Shellfish Consumption Advisories |
Bioaccumlative Toxics in Water |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11145 | X | C |
| Source: TCEQ 2016 Integrated Report |
| Impairments are identified by an 'X' |
| Water quality impairments and concerns apply only to the assessment unit in which this station is located |
| TCEQ Integrated Report |
| Texas Department of State Health Services Fish and Shellfish Advisories |
| Texas Parks and Wildlife Fish Consumption Advisories |
| Water Quality Assessment Details |
| Assessment Unit | Assessed Use | Impairment or Concern | Assessed Parameter | Integrated Support Code | Impairment Category | Integrated Support Code | Impairment or Concern Details | Dataset Qualifier | Number of Samples Assessed | Number of Samples Exceeding Standard or Screening Level | Geometric Mean or Average | Assessment Start Date | Assessment End Date |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1014B_01 | Recreation Use | Bacteria Geomean | E. coli | NS | 4a | NS | TMDL completed and approved by EPA | Adequate Data (10 or More Samples) | 89 | 1 | 288.08527 | 01DEC2007 | 30NOV2014 |
| 1014B_01 | Aquatic Life Use | Dissolved Oxygen grab minimum | Dissolved Oxygen Grab | FS | FS | Adequate Data (10 or More Samples) | 86 | 0 | . | 01DEC2007 | 30NOV2014 | ||
| 1014B_01 | Aquatic Life Use | Dissolved Oxygen grab screening level | Dissolved Oxygen Grab | NC | NC | Adequate Data (10 or More Samples) | 86 | 0 | . | 01DEC2007 | 30NOV2014 | ||
| 1014B_01 | General Use | Nutrient Screening Levels | Ammonia | NC | NC | Adequate Data (10 or More Samples) | 90 | 16 | . | 01DEC2007 | 30NOV2014 | ||
| 1014B_01 | General Use | Nutrient Screening Levels | Nitrate | CS | CS | Screening Level Concern | Adequate Data (10 or More Samples) | 90 | 74 | . | 01DEC2007 | 30NOV2014 | |
| 1014B_01 | General Use | Nutrient Screening Levels | Total Phosphorus | CS | CS | Screening Level Concern | Adequate Data (10 or More Samples) | 90 | 71 | . | 01DEC2007 | 30NOV2014 |
| Source: TCEQ 2016 Integrated Report |
| Impairments are identified by an 'X' |
| Water quality impairments and concerns apply only to the assessment unit in which this station is located |
| TCEQ Integrated Report |
| Texas Department of State Health Services Fish and Shellfish Advisories |
| Texas Parks and Wildlife Fish Consumption Advisories |
| Summary of Data Collected in the Past Seven Years |
| Graphs of Possible Trends from Correlation Analysis may be found at the link below |
| Statistically Signficant 7-YearTrends- Time Series Graph |
| Description of Water Quality Parameters |
| Parameter | Units | Start Date | End Date | Number of Samples | Standard or Screening Level Exceedances | Percent Exceedance | Minimum Value | Maximum Value | Mean Value | Median Value | Geometric Mean | Standard Deviation | 90th Percentile | P-Value | Time Correlation | Possible Trends |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ammonia-N | mg/L | 06/14/2012 | 04/10/2019 | 29 | 7 | 24.1 | 0.05 | 1.20 | 0.26 | 0.10 | . | 0.30 | 0.70 | . | . | |
| Chloride | mg/L | 06/14/2012 | 04/10/2019 | 29 | . | . | 25 | 141 | 80.9 | 85 | . | 36.6 | 130 | . | . | |
| Dissolved Oxygen (grab) | mg/L | 06/14/2012 | 04/10/2019 | 27 | 0 | 0.0 | 5.10 | 10.00 | 7.13 | 7.00 | . | 1.11 | 8.60 | . | . | |
| E. Coli | MPN / 100 mL | 06/14/2012 | 04/10/2019 | 29 | 13 | 44.8 | 1 | 6900 | 830 | 110 | 127 | 1627 | 3300 | . | . | |
| Enterococci | MPN / 100 mL | 06/14/2012 | 07/26/2017 | 22 | . | . | 5 | 14000 | 1615 | 235 | 164 | 3381 | 4100 | 0.03553 | -.450 | Possible Improvement |
| Instantaneous Flow | CFS | 06/14/2012 | 04/10/2019 | 29 | . | . | 3 | 237 | 22 | 7 | . | 44.33 | 46 | 0.00139 | 0.565 | Possible Increase |
| Nitrate-N | mg/L | 03/08/2018 | 03/08/2018 | 1 | 1 | 100 | 9.27 | 9.27 | 9.27 | 9.27 | . | . | 9.27 | . | . | |
| Secchi Transparency | Meters | 06/14/2012 | 04/10/2019 | 29 | . | . | 0.04 | 0.30 | 0.14 | 0.14 | . | 0.07 | 0.25 | 0.04426 | -.376 | Possible Improvement |
| Specific Conductance | Microsiemens / cm | 06/14/2012 | 04/10/2019 | 29 | . | . | 155 | 868 | 544 | 569 | . | 206 | 812 | . | . | |
| Sulfate | mg/L | 06/14/2012 | 04/10/2019 | 29 | . | . | 3 | 41 | 19.7 | 20 | . | 8.6 | 31 | 0.01566 | -.445 | Possible Improvement |
| Temperature | Degrees C | 06/14/2012 | 04/10/2019 | 29 | . | . | 10.2 | 31.8 | 23.5 | 24.8 | . | 6.4 | 30.5 | . | . | |
| Total Kjeldahl Nitrogen | mg/L | 06/14/2012 | 04/10/2019 | 29 | . | . | 0.90 | 4.80 | 1.90 | 1.50 | . | 0.93 | 3.50 | . | . | |
| Total Phosphorus | mg/L | 06/14/2012 | 04/10/2019 | 29 | 23 | 79.3 | 0.07 | 13.10 | 1.65 | 1.00 | . | 2.32 | 2.71 | . | . | |
| Total Suspended Solids | mg/L | 06/14/2012 | 04/10/2019 | 29 | . | . | 19 | 249 | 94 | 79 | . | 61.3 | 204 | 0.00083 | 0.586 | Possible Deterioration |
| pH | Standard Units | 06/14/2012 | 04/10/2019 | 29 | . | . | 7.1 | 8.4 | 7.7 | 7.6 | . | 0.31 | 8.1 | . | . |
| Statistics in this table apply to the time period selected by H-GAC for analysis; additional data is available in the TCEQ Surface Water Monitoring Information System database |
| P-value and time correlation derived from nonparametric correlation analysis of concentration and collection date; trends identified have not been confirmed by other methods and should not be considered definitive |
| Exceedance statistics reflect samples that exceed single-sample or geometric mean criteria published in Chapter 307 of the Texas Administrative Code (6/30/10), or TCEQ nutrient screening levels |
| Nutrient data (chlorophyll a, nitrate nitrogen, total phosphorus, ammonia nitrogen, and orthophosphate phosphorus) are not collected at all stations |
| A time correlation of 'M' indicates that all sample values were identical; regresssion statistics are not valid |
| Most Recent Sampling Event in SWQMIS |
| Station_ID | Sample Depth | Sample Date | Time | Collector | Parameter | Parameter Code |
GTLT | Value | Units | Standard / Screening level |
|---|---|---|---|---|---|---|---|---|---|---|
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Ammonia-N | 00610 | 1.2 | Mg / L | 0.33 mg/L | |
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Chloride | 00940 | 58 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Days Since Last Rain | 72053 | 3 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Dissolved Oxygen (grab) | 00300 | 6 | Mg / L | 4.0 mg/L | |
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | E. Coli | 31699 | 500 | MPN / 100 mL | 126 MPN/100 mL | |
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Flow Severity | 01351 | 3 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Instantaneous Flow | 00061 | 19 | CFS | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Nitrate+nitrite | 00630 | 3.44 | Mg / L | 1.95 Mg/L | |
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Secchi Transparency | 00078 | 0.07 | Meters | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Specific Conductance | 00094 | 446 | Microsiemens / cm | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Sulfate | 00945 | 19 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Temperature | 00010 | 23.9 | Degrees C | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Total Kjeldahl Nitrogen | 00625 | 1.3 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Total Phosphorus | 00665 | 0.32 | Mg / L | 0.69 mg/L | |
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | Total Suspended Solids | 00530 | 134 | Mg / L | ||
| 11145 | 0.335 | 04/10/2019 | 10:38 | Houston-Galveston Area Council | pH | 00400 | 7.5 | Standard Units |