| 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 21957 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mill Creek At Fm 149 North Of Tomball | Mill Creek | Unclassified Freshwater Stream | Spring Creek | 1008 | 1008A_01 | 30.18580000000 | -95.68170000000 | 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 | 03/14/2017 | 04/09/2019 | Quarterly | Field, Conventional, Bacteria |
| Watershed Information |
| Watershed | Segment ID | Water Body | Segment Definition | Watershed Description | Water Quality Issues | Watershed Map |
|---|---|---|---|---|---|---|
| Spring Creek | 1008 | Mill Creek | From the confluence with the West Fork San Jacinto River in Harris/Montgomery County to the most upstream crossing of FM 1736 in Waller County. Sub-Segment 1008A: Mill Creek (unclassified water body). From the normal pool elevation of Neidigk Lake upstream to the Hurricane Creek and Kickapoo Creek confluences. Sub-Segment 1008B: Upper Panther Branch (unclassified water body). From the Lake Woodlands confluence upstream to the Bear Branch confluence. Sub-Segment 1008C: Lower Panther Branch (unclassified water body). From Spring Creek confluence upstream to Saw Dust Road. Sub-Segment 1008E: Bear Branch (unclassified water body). From Upper Panther Branch confluence to south of FM 1488. Sub-Segment 1008F: Lake Woodlands (unclassified water body). Upper end of segment to Northshore Park/Woodlock Forest. Sub-Segment 1008H: Willow Creek (unclassified water body). From the Spring Creek confluence to a point 0.48 km (0.3 mi) north of Juergen Road. Sub-Segment 1008I: Walnut Creek (unclassified water body). From the S | This segment continues to experience rapid development. Commercial and residential growth is flourishing in the northeastern and middle portions of the watershed. The areas around Spring, The Woodlands, Shenandoah, and Oak Ridge North have been growing for quite some time but development around the cities of Tomball and Magnolia, located in the middle of the watershed, has escalated in the past five years. Between I-45 to the west and U.S. Highway 59 to the east, most of Spring Creek has been preserved as a greenbelt to help minimize flooding. The primary land cover west of Tomball is agricultural and cultivated land. Grass, hay and pasture related to cattle and horse ranches are common. The forested areas in the middle and northwest portion of the watershed are interspersed by subdivisions platted with lots ranging from 0.5 to 5 acres in size. Ranchettes and hobby ranches are also common in that portion of the watershed. On-site sewage facilities are the primary means of waste disposal in those areas. | The public water supply and fish consumption use are the designated uses fully supported in this segment. The Spring Creek has been divided into three units for assessment purposes. The recreation use in all three AUs is impaired because the geometric means are greater than the standard of 126 MPN/100 mL. The middle AU has a geomean of 425 MPN/100 mL with 50 out of 117 samples (43%) exceeding the single sample criteria of 394 MPN/100 mL. The most concentrated urban areas are along that portion of the watershed. The upper AU has a geomean of 372 MPN/100 mL with 45 out of 120 samples (38%) exceeding the single sample criteria. The tributaries of Upper Panther Branch, Lower Panther Branch, and Willow Creek also have recreation use impairments with geomeans of 228, 170, and 489 MPN/100 mL, respectively. Two other unclassified tributaries, Walnut Creek and Brushy Creek, are also showing signs of being impaired, but there are too few samples available to make the determination at this time. | 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 |
|---|---|---|---|
| Aquatic Life Use | Intermediate | TSWQS Appendix D | Incidental |
| General Use | Intermediate | TSWQS Appendix D | Incidental |
| Recreation 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21957 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1008A_01 | Recreation Use | Bacteria Geomean | E. coli | FS | FS | Adequate Data (10 or More Samples) | 27 | 0 | 120.53426 | 01DEC2007 | 30NOV2014 | ||
| 1008A_01 | Aquatic Life Use | Dissolved Oxygen 24hr average | Dissolved Oxygen 24hr Avg | CN | CN | Use Concern for Designated Use | Temporally Not Representative, used with NA | 5 | 2 | . | 01DEC2007 | 30NOV2014 | |
| 1008A_01 | Aquatic Life Use | Dissolved Oxygen 24hr minimum | Dissolved Oxygen 24hr Min | CN | CN | Use Concern for Designated Use | Temporally Not Representative, used with NA | 5 | 2 | . | 01DEC2007 | 30NOV2014 | |
| 1008A_01 | Aquatic Life Use | Dissolved Oxygen grab minimum | Dissolved Oxygen Grab | NS | 5c | NS | Additional data and information will be collected before a TMDL is scheduled | Adequate Data (10 or More Samples) | 27 | 6 | . | 01DEC2007 | 30NOV2014 |
| 1008A_01 | Aquatic Life Use | Dissolved Oxygen grab screening level | Dissolved Oxygen Grab | CS | CS | Screening Level Concern | Adequate Data (10 or More Samples) | 24 | 9 | . | 01DEC2007 | 30NOV2014 | |
| 1008A_01 | General Use | Nutrient Screening Levels | Ammonia | NC | NC | Adequate Data (10 or More Samples) | 28 | 1 | . | 01DEC2007 | 30NOV2014 | ||
| 1008A_01 | General Use | Nutrient Screening Levels | Nitrate | NC | NC | Adequate Data (10 or More Samples) | 28 | 7 | . | 01DEC2007 | 30NOV2014 | ||
| 1008A_01 | General Use | Nutrient Screening Levels | Total Phosphorus | CS | CS | Screening Level Concern | Adequate Data (10 or More Samples) | 28 | 8 | . | 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 | 03/14/2017 | 04/09/2019 | 10 | 2 | 20.0 | 0.05 | 0.50 | 0.14 | 0.05 | . | 0.17 | 0.45 | . | . | |
| Chloride | mg/L | 03/14/2017 | 04/09/2019 | 10 | . | . | 20 | 60 | 45.3 | 46 | . | 13.4 | 60 | 0.02620 | -.693 | |
| Dissolved Oxygen (24-hour Mean/ Grab Screening Level) | mg/L | 10/04/2017 | 10/02/2018 | 5 | 0 | 0.0 | 5.50 | 8.80 | 6.64 | 6.30 | . | 1.26 | 8.80 | . | . | |
| Dissolved Oxygen (24-hour Minimum / Grab Minimum) | mg/L | 10/04/2017 | 10/02/2018 | 5 | 0 | 0.0 | 5.20 | 8.40 | 6.36 | 6.00 | . | 1.22 | 8.40 | . | . | |
| Dissolved Oxygen (grab) | mg/L | 03/14/2017 | 04/09/2019 | 10 | 0 | 0.0 | 5.20 | 10.30 | 7.24 | 7.10 | . | 1.68 | 9.60 | . | . | |
| E. Coli | MPN / 100 mL | 03/14/2017 | 04/09/2019 | 10 | 6 | 60.0 | 29 | 2100 | 566 | 165 | 225 | 799 | 2050 | . | . | |
| Enterococci | MPN / 100 mL | 03/14/2017 | 07/25/2017 | 3 | . | . | 20 | 86 | 53 | 52 | 45 | 33 | 86 | 0.00000 | 1.000 | |
| Instantaneous Flow | CFS | 03/14/2017 | 04/09/2019 | 11 | . | . | 2 | 48 | 14 | 11 | . | 13.04 | 23 | . | . | |
| Secchi Transparency | Meters | 03/14/2017 | 04/09/2019 | 9 | . | . | 0.15 | 1.00 | 0.42 | 0.28 | . | 0.31 | 1.00 | 0.03577 | -.700 | |
| Specific Conductance | Microsiemens / cm | 03/14/2017 | 04/09/2019 | 10 | . | . | 195 | 354 | 277 | 288 | . | 50 | 338 | . | . | |
| Sulfate | mg/L | 03/14/2017 | 04/09/2019 | 10 | . | . | 5 | 22 | 8.6 | 7 | . | 5.2 | 17 | . | . | |
| Temperature | Degrees C | 03/14/2017 | 04/09/2019 | 10 | . | . | 10.7 | 27.7 | 20.9 | 21.9 | . | 6.0 | 27.7 | . | . | |
| Total Kjeldahl Nitrogen | mg/L | 03/14/2017 | 04/09/2019 | 10 | . | . | 0.10 | 1.30 | 0.66 | 0.55 | . | 0.43 | 1.30 | . | . | |
| Total Phosphorus | mg/L | 03/14/2017 | 04/09/2019 | 10 | 4 | 40.0 | 0.03 | 2.25 | 0.74 | 0.50 | . | 0.80 | 2.05 | . | . | |
| Total Suspended Solids | mg/L | 03/14/2017 | 04/09/2019 | 10 | . | . | 8 | 64 | 29 | 23 | . | 18.8 | 57 | 0.00610 | 0.794 | |
| pH | Standard Units | 03/14/2017 | 04/09/2019 | 10 | . | . | 7.2 | 7.6 | 7.4 | 7.4 | . | 0.17 | 7.6 | 0.00069 | -.884 |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Ammonia-N | 00610 | 0.4 | Mg / L | 0.33 mg/L | |
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Chloride | 00940 | 48 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Days Since Last Rain | 72053 | 2 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Dissolved Oxygen (grab) | 00300 | 7.6 | Mg / L | 4.0 mg/L | |
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | E. Coli | 31699 | 2000 | MPN / 100 mL | 126 MPN/100 mL | |
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Flow Severity | 01351 | 3 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Instantaneous Flow | 00061 | 23 | CFS | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Nitrate+nitrite | 00630 | < | 0.04 | Mg / L | 1.95 Mg/L |
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Secchi Transparency | 00078 | 0.17 | Meters | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Specific Conductance | 00094 | 354 | Microsiemens / cm | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Sulfate | 00945 | 9 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Temperature | 00010 | 18.9 | Degrees C | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Total Kjeldahl Nitrogen | 00625 | 0.6 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Total Phosphorus | 00665 | < | 0.06 | Mg / L | 0.69 mg/L |
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | Total Suspended Solids | 00530 | 48 | Mg / L | ||
| 21957 | 0.15 | 04/09/2019 | 9:19 | Houston-Galveston Area Council | pH | 00400 | 7.3 | Standard Units |