| 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 18192 |
| Link to TCEQ Watershed Data |
| All data from this station or assessment unit 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Creek At Sh 105 1.0 Km Northeast Of Fm 1486 Near Dobbin And 8.0 Km West Of Montgomery Texas | Lake Creek | Classified Freshwater Stream | Lake Creek | 1015 | 1015_02 | 30.37158400000 | -95.76875300000 | Summer Picture | Winter Picture | Data Download Page | No USGS Gauge |
| 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 | 10/11/2018 | 04/11/2019 | Quarterly | Field, Conventional, Bacteria |
| U.S. Geological Survey | 12/11/2002 | 06/02/2004 | Quarterly | Field, Conventional, Bacteria |
| Watershed Information |
| Watershed | Segment ID | Water Body | Segment Definition | Watershed Description | Water Quality Issues | Watershed Map |
|---|---|---|---|---|---|---|
| Lake Creek | 1015 | Lake Creek | From the West Fork of the San Jacinto River confluence upstream to the Landrum Creek confluence. Sub-Segment 1015A: Mound Creek (unclassified water body). From the Lake Creek confluence upstream to the confluence with an unnamed tributary approximately 0.75 km (0.47 mi) downstream of Rabon-Chapel Road. Sub-Segment 1015B: Caney Creek (unclassified water body). From the Lake Creek confluence upstream to a point 2.4 km (1.5 mi) south of FM 1774 | The watershed is rural in nature and is dominated by forested land and grassland with the major land cover used as pastureland for hay. Residential development is occurring rapidly in the watershed particularly in the southern part of the watershed where growth is occurring just west of the City of Conroe and I-45 between Texas Highway 2854 and Texas Highway 1488. There are a few other pockets of development in the center of the watershed outside of the City of Montgomery although there are no major population centers. | Lake Creek is one of lesser impacted waterways in the entire region. In the Draft 2010 Texas Integrated Report (IR), the Assessment Unit (AU) 1015_02 was the only AU identified as having a concern. Dissolved oxygen (DO) grab samples had 3 out of 18 measurements (17%) below the grab minimum standard of 3 mg/L and 22% of the measurements were below the grab screening level of 5 mg/L. The 2008 Texas Integrated Report (IR) had no concerns or impairments identified for this segment. | 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 |
|---|---|---|---|
| Public Water Supply Use | High | TSWQS Appendix A | Sustainable |
| Aquatic Life Use | High | TSWQS Appendix A | Sustainable |
| General Use | High | TSWQS Appendix A | Sustainable |
| 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 |
| Chloride | 2014 Water Quality Standard | 80 mg/L |
| Chlorophyll a | 2014 TCEQ Screening Level | 14.1 Micrograms / L |
| Dissolved Oxygen (24-hour Mean/ Grab Screening Level) | 2014 Water Quality Standard | 5.0 mg/L |
| Dissolved Oxygen (24-hour Minimum / Grab Minimum) | 2014 Water Quality Standard | 3.0 mg/L |
| Dissolved Oxygen (grab) | 2014 Water Quality Standard | 5.0 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 |
| Sulfate | 2014 Water Quality Standard | 50 mg/L |
| Temperature | 2014 Water Quality Standard | 90 Degrees F |
| Total Dissolved Solids | 2014 Water Quality Standard | 300 mg/L |
| Total Phosphorus | 2014 TCEQ Screening Level | 0.69 mg/L |
| pH | 2014 Water Quality Standard | 6.0-8.5 Standard Units |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18192 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1015_02 | Aquatic Life Use | Dissolved Oxygen grab screening level | Dissolved Oxygen Grab | CS | CS | Screening Level Concern | Inadequate Data (less than 4) | . | . | . | 01DEC2007 | 30NOV2014 | |
| 1015_02 | General Use | Dissolved Solids | Chloride | FS | FS | Adequate Data (10 or More Samples) | 62 | 0 | 49.040323 | 01DEC2007 | 30NOV2014 | ||
| 1015_02 | General Use | Dissolved Solids | Sulfate | FS | FS | Adequate Data (10 or More Samples) | 62 | 0 | 12.459677 | 01DEC2007 | 30NOV2014 | ||
| 1015_02 | General Use | Dissolved Solids | Total Dissolved Solids | FS | FS | Adequate Data (10 or More Samples) | 73 | 0 | 201.37123 | 01DEC2007 | 30NOV2014 | ||
| 1015_02 | Public Water Supply Use | Surface Water HH criteria for PWS average | Fluoride | NC | NC | Limited Data (less than 9, greater than 3) | 4 | 0 | 0.2225 | 01DEC2007 | 30NOV2014 | ||
| 1015_02 | Public Water Supply Use | Surface Water HH criteria for PWS average | Nitrate | FS | FS | Adequate Data (10 or More Samples) | 62 | 0 | 0.1348387 | 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 |
| 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 | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 0.05 | 0.30 | 0.18 | 0.20 | . | 0.13 | 0.30 | . | . | |
| Chloride | mg/L | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 23 | 53 | 40.7 | 46 | . | 15.7 | 53 | . | . | |
| Dissolved Oxygen (grab) | mg/L | 10/11/2018 | 04/11/2019 | 3 | 2 | 33.3 | 4.50 | 9.90 | 6.63 | 5.50 | . | 2.87 | 9.90 | . | . | |
| E. Coli | MPN / 100 mL | 10/11/2018 | 04/11/2019 | 3 | 3 | 100 | 150 | 860 | 503 | 500 | 401 | 355 | 860 | . | . | |
| Instantaneous Flow | CFS | 10/11/2018 | 04/11/2019 | 3 | . | . | 23 | 52 | 40 | 44 | . | 14.98 | 52 | . | . | |
| Secchi Transparency | Meters | 10/11/2018 | 04/11/2019 | 3 | . | . | 0.14 | 0.23 | 0.17 | 0.15 | . | 0.05 | 0.23 | . | . | |
| Specific Conductance | Microsiemens / cm | 10/11/2018 | 04/11/2019 | 3 | . | . | 220 | 352 | 301 | 332 | . | 71 | 352 | . | . | |
| Sulfate | mg/L | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 7 | 10 | 9.0 | 10 | . | 1.7 | 10 | . | . | |
| Temperature | Degrees C | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 9.5 | 22.4 | 17.5 | 20.7 | . | 7.0 | 22.4 | . | . | |
| Total Phosphorus | mg/L | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 0.16 | 0.56 | 0.35 | 0.32 | . | 0.20 | 0.56 | . | . | |
| Total Suspended Solids | mg/L | 10/11/2018 | 04/11/2019 | 3 | . | . | 40 | 51 | 47 | 50 | . | 6.1 | 51 | . | . | |
| pH | Standard Units | 10/11/2018 | 04/11/2019 | 3 | 0 | 0.0 | 7.3 | 7.4 | 7.4 | 7.4 | . | 0.06 | 7.4 | . | . |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Ammonia-N | 00610 | 0.3 | Mg / L | 0.33 mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Chloride | 00940 | 46 | Mg / L | 80 mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Days Since Last Rain | 72053 | 4 | Mg / L | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Dissolved Oxygen (grab) | 00300 | 5.5 | Mg / L | 5.0 mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | E. Coli | 31699 | 860 | MPN / 100 mL | 126 MPN/100 mL | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Flow Severity | 01351 | 3 | Mg / L | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Instantaneous Flow | 00061 | 44 | CFS | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Nitrate+nitrite | 00630 | 0.22 | Mg / L | 1.95 Mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Secchi Transparency | 00078 | 0.15 | Meters | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Specific Conductance | 00094 | 332 | Microsiemens / cm | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Sulfate | 00945 | 10 | Mg / L | 50 mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Temperature | 00010 | 20.7 | Degrees C | 90 Degrees F | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Total Phosphorus | 00665 | 0.32 | Mg / L | 0.69 mg/L | |
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | Total Suspended Solids | 00530 | 50 | Mg / L | ||
| 18192 | 0.302 | 04/11/2019 | 9:20 | Houston-Galveston Area Council | pH | 00400 | 7.4 | Standard Units | 6.0-8.5 Standard Units |