Paul M. Bradley
Celeste A. Journey
2018
Nutrient concentrations, streamflow, and geospatial data for 76 wadeable streams in the Piedmont Ecoregion of the Southeastern United States
data tables in tab-delimited txt format
Denver
U.S. Geological Survey
https://doi.org/10.5066/F79K4949
Water samples were collected by the USGS National Water Quality Program (NWQP) Southeastern Stream Quality Assessment (SESQA) from 76 perennial, wadeable (less than 10 m width and 1 m depth at base-flow) headwater stream sites in watersheds with varying degrees of urban land use in four states. Dataset includes sample site locations and information, water sample nutrient concentrations and statistics analyses, and corresponding watershed land-use-land-cover data and data dictionary.
Data were collected to address the current limited information on fluvial nutrient contamination in wadeable streams throughout the Piedmont USA ecoregion.
20140414
20140613
ground condition
Not planned
-87.3985
-76.9833
39.5404
32.4242
SESQA Study Area
none
wadeable stream
surface water
water quality
water contaminants
nutrient contaminants
wastewater
wastewater treatment facility
USGS Metadata Identifier
USGS:5980b1a3e4b0a38ca278a8a3
none
North America
United States of America
Georgia
South Carolina
North Carolina
Virginia
none
surface water
riparian
stream
channel
watershed
none
spring
summer
April
May
June
2014
none
none
Paul M. Bradley
U.S. Geological Survey (USGS)
mailing and physical
720 Gracern Rd, Suite 129
Columbia
SC
29210
USA
803-750-6100
pbradley@usgs.gov
USGS National Water Quality Assessment Regional Stream Quality Assessments
No formal attribute accuracy tests were conducted
No formal logical accuracy tests were conducted
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
No formal positional accuracy tests were conducted
No formal positional accuracy tests were conducted
Final Tables for data release
20180917
n/a
Complete method information are provided Journey and others, 2018. Water samples were collected by the USGS National Water Quality Program (NWQP) Southeastern Stream Quality Assessment (SESQA) from 76 perennial, wadeable (less than 10 m width and 1 m depth at base-flow) headwater stream sites in watersheds with varying degrees of urban land use in four states.
none
1.0E-5
1.0E-5
Decimal degrees
North American 1983
GRS 1980
6378137.0
298.257222101
TABLE 1 NUTRIENT BENCHMARKS.txt
Table 1. SESQA Study Area nutrient benchmarks
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 1.Nutrient Benchmarks columns 1-11
Column headers corresponding to Water Quality Standard/Benchmark/Guideline, TN, TP, NO2+NO3, Statistic, Reference
USGS National Water Information System (NWIS) and producer defined
Nutrient Benchmarks, method description, and reference
TABLE 2 SITE INFO.txt
Table 2. SESQA Study Area site information
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 2.Site information columns 1-8
Column headers corresponding to TSTAID, NWIS station name, Field ID, Site Group, Latitude, Longitude, Drainage area (square kilometers), Urban land use (percent)
USGS National Water Quality Laboratory; producer-defined
Site information corresponding to column headings
TABLE 3 NUTRIENT STATS BY SITE.txt
Table 3. SESQA nutrient summary statistics by individual site
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 3.SESQA nutrient statistics by individual site in columns 1-47
Column headers corresponding to TSTAID, Field ID, Site Group, Site type, Total Nitrogen N, Total Nitrogen Missing, Total Nitrogen Mean, Total Nitrogen Median, Total Nitrogen 25th, Total Nitrogen 75th, Total Organic Nitrogen N, Total Organic Nitrogen Missing, Total Organic Nitrogen Median, Total Organic Nitrogen 25th, Total Organic Nitrogen 75th, Dissolved Ammonia N, Dissolved Ammonia Missing, Dissolved Ammonia Median, Dissolved Ammonia 25th, Dissolved Ammonia 75th, Dissolved Nitrite N, Dissolved Nitrite Missing, Dissolved Nitrite Median, Dissolved Nitrite 25th, Dissolved Nitrite 75th, Dissolved Nitrate N, Dissolved Nitrate Missing, Dissolved Nitrate Median, Dissolved Nitrate 25th, Dissolved Nitrate 75th, Dissolved Nitrate plus Nitrite N, Dissolved Nitrate plus Nitrite Missing, Dissolved Nitrate plus Nitrite Mean, Dissolved Nitrate plus Nitrite Median, Dissolved Nitrate plus Nitrite 25th, Dissolved Nitrate plus Nitrite 75th, Total Phosphorus N, Total Phosphorus Missing, Total Phosphorus Mean, Total Phosphorus Median, Total Phosphorus 25th, Total Phosphorus 75th, Dissolved Orthophosphate N, Dissolved Orthophosphate Missing, Dissolved Orthophosphate Median, Dissolved Orthophosphate 25th, Dissolved Orthophosphate 75th
USGS National Water Quality Laboratory; producer-defined
Nutrient statistics corresponding to column headings.
TABLE 4 NUTRIENT STATS BY GROUP.txt
Table 4. SESQA nutrient summary statistics by site group
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 4. SESQA nutrient statistics by site group in columns 1-26
Column headers corresponding to Site Group, TN Minimum, TN 25th, TN Median, TN 75th, TN Maximum, Dissolved Ammonia Minimum, Dissolved Ammonia 25th, Dissolved Ammonia Median, Dissolved Ammonia 75th, Dissolved Ammonia Maximum, Dissolved Nitrate plus Nitrite Minimum, Dissolved Nitrate plus Nitrite 25th, Dissolved Nitrate plus Nitrite Median, Dissolved Nitrate plus Nitrite 75th, Dissolved Nitrate plus Nitrite Maximum, TP Minimum, TP 25th, TP Median, TP 75th, TP Maximum, Dissolved Orthophosphate Minimum, Dissolved Orthophosphate 25th, Dissolved Orthophosphate Median, Dissolved Orthophosphate 75th, Dissolved Orthophosphate Maximum
Method Data Dictionary (See table 2 Method information); USGS National Water Quality Laboratory
Nutrient statistics corresponding to column headings.
TABLE 5 GROUP COMPARISONS.txt
Table 5. Permutation-based site group comparison statistics for mean nutrient concentrations in mg/L
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 5. Permutation-based site group comparison statistics for mean nutrient concentrations in columns 1-11
Column headers corresponding to Variable, Permutation One-Factor Test F, Permutation One-Factor Test p-value, Ag-CAFO, Rural, Reference, Atlanta GA, Greenville SC, Charlotte NC, Raleigh NC, Washington DC
producer defined
Water sample site information and pharmaceutical summary concentration and detection data.
TABLE 6. GIS DATA DICTIONARY.txt
Table 6. GIS Data dictionary for LULC metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Table 6. Data dictionary for land-use-land-cover metrics in columns 1-10
LULC metric information corresponding to CATEGORY, VARIABLE NAME, DESCRIPTION, EXTENT, UNITS, TEMPORAL, SOURCE DATA (BRIEF), NOMINAL RESOLUTION/SCALE OF SOURCE DATA, REFERENCE FOR SOURCE DATA, WEBSITE OR CONTACT FOR SOURCE DATA
Authority as listed in columns REFERENCE and WEBSITE
LULC metric definition.
TABLE 7. PRIMER STATS.txt
Table 7. Nonparametric, permutation-based stastical analysis of relation between nutrient metrics and GIS metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Nonparametric, permutation-based stastical relations between nutrient metrics and GIS metrics in columns 1-15
Column headers corresponding to Nutrient Metrics, Urban Center ANOSIM Global R, Urban Center ANOSIM p-value, Site Group ANOSIM Global R, Site Group ANOSIM p-value, Land Use ANOSIM Global R, Land Use ANOSIM p-value, All GIS RELATE (N=190) Rho, All GIS RELATE (N=190) p-value, Individual Only GIS RELATE (N=179) Rho, Individual Only GIS RELATE (N=179) p-value, Combined Only GIS RELATE (N=11) Rho, Combined Only GIS RELATE (N=11) p-value, GIS Subset (N=58) Rho, GIS Subset (N=58) p-value
producer defined
permutation-based stastical analysis of relation between nutrient metrics and GIS metrics
TABLE 8. SPEARMAN WET DEP.txt
Table 8. Spearman Rho correlation of ammonium wet deposition against SESQA nutrient metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Spearman Rho correlation of ammonium wet deposition against SESQA nutrient metrics in columns 1-7
Column headers corresponding to Nutrient Variable, Reference/Rural only Rho, Reference/Rural only p-value, Reference/Rural only N, All Sites Rho, All Sites p-value, All Sites N
producer defined
Spearman Rho correlation statistics
TABLE 9. MLR MEDIAN TOTAL P.txt
Table 9. Best multipe logistic regression (MLR) models for the likelihood of median total phosphorus concentrations exceeding USEPA recommended nutrient guidelines
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Multiple logistic regression (MLR) models for the likelihood of median total phosphorus concentrations exceeding USEPA recommended nutrient guidelines in columns 1-10
Column headers corresponding to Classification Table, Predicted Reference, Predicted Positive, Totals, Diagnostic, Percent, -2*LOG (Likelihood), Hosmer-Lemshow (p-value), Pearson Chi-Squared (p-value), Likelihood Ratio Test (p-value)
producer defined
Multiple logistic regression statistics for median total phosphorus exceedance
TABLE 10. MLR MEDIAN TOTAL N.txt
Table 10. Best multipe logistic regression (MLR) models for the likelihood of median total nitrogen concentrations exceeding USEPA recommended nutrient guidelines
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Multiple logistic regression (MLR) models for the likelihood of median total nitrogen concentrations exceeding USEPA recommended nutrient guidelines in columns 1-10
Column headers corresponding to Classification Table, Predicted Reference, Predicted Positive, Totals, Diagnostic, Percent, -2*LOG (Likelihood), Hosmer-Lemshow (p-value), Pearson Chi-Squared (p-value), Likelihood Ratio Test (p-value)
producer defined
Multiple logistic regression statistics for median total nitrogen exceedance
TABLE 11. MLR STATS ALL.txt
Table 11. Diagnostics and coefficients for best multipe logistic regression (MLR) models for the likelihood of median total nitrogen and total phosphorus concentrations exceeding USEPA recommended nutrient guideline
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Diagnostics and coefficients for best multipe logistic regression (MLR) models for the likelihood of median total nitrogen and total phosphorus concentrations exceeding USEPA recommended nutrient guidelines in columns 1-16
Column headers corresponding to Analyzed Nutrient Metric Relative to Above or Below EPA Recommended Guideline, Specificity, Sensitivity, -2*LOG (Likelihood), Hosmer-Lemeshow Statistic, Hosmer-Lemeshow p-value, Pearson Chi-Squared Statistic, Pearson Chi-Squared p-value, Likelihood Ratio Test Statistic, Likelihood Ratio Test p-value, Constant, NLCD 2011 Developed Land (Open, Low, Med., High), 2002 Number of NPDES Permitted Major Facilities, STATSGO Soil Hydrologic Group CD, Depth To Water Table, Topographic Wetness Index
producer defined
Multiple logistic regression statistics for median total nitrogen and phophorus exceedances
TABLE 12. SPEARMAN GIS.txt
Table 12. Spearman Rho correlation of GIS metrics against SESQA nutrient metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Spearman Rho correlation of GIS metrics against SESQA nutrient metrics in columns 1-26
Column headers corresponding to Land and Hydrologic Characteristic, n, Total Nitrogen (Median) Rho, Total Nitrogen (Median) P-value, Total Nitrogen (25th percentile) Rho, Total Nitrogen (25th percentile) P-value, Total Nitrogen (75th percentile) Rho, Total Nitrogen (75th percentile) P-value, Dissolved Nitrite plus Nitrate (Median) Rho, Dissolved Nitrite plus Nitrate (Median) P-value, Dissolved Nitrite plus Nitrate (25th percentile) Rho, Dissolved Nitrite plus Nitrate (25th percentile) P-value, Dissolved Nitrite plus Nitrate (75th percentile) Rho, Dissolved Nitrite plus Nitrate (75th percentile) P-value, Total Phosphorus (Median) Rho, Total Phosphorus (Median) P-value, Total Phosphorus (25th percentile) Rho, Total Phosphorus (25th percentile) P-value, Total Phosphorus (25th percentile) Rho, Total Phosphorus (25th percentile) P-value, Dissolved Orthophosphate (Median) Rho, Dissolved Orthophosphate (Median) P-value, Dissolved Orthophosphate (25th percentile) Rho, Dissolved Orthophosphate (25th percentile) P-value, Dissolved Orthophosphate (75th percentile) Rho, Dissolved Orthophosphate (75th percentile) P-value
producer defined
Spearman Rho correlation statistics
TABLE 13. SPEARMAN DISCHARGE.txt
Table 13. Spearman Rho correlation of stream discharge in cubic meters per second against SESQA nutrient metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Spearman Rho correlation of stream discharge in cubic meters per second against SESQA nutrient metrics in columns 1-34
Column headers corresponding to Nutrient Variables, Reference Rho, Reference P-value, Reference Number, Washington DC (no WWTP) Rho, Washington DC (no WWTP) P-value, Washington DC (no WWTP) Number, Atlanta (no WWTP) Rho, Atlanta (no WWTP) P-value, Atlanta (no WWTP) Number, Atlanta (WWTP) Rho, Atlanta (WWTP) P-value, Atlanta (WWTP) Number, Ag-CAFO Rho, Ag-CAFO P-value, Ag-CAFO Number, Charlotte NC (no WWTP) Rho, Charlotte NC (no WWTP) P-value, Charlotte NC (no WWTP) Number, Charlotte NC (WWTP) Rho, Charlotte NC (WWTP) P-value, Charlotte NC (WWTP) Number, Greenville SC (no WWTP) Rho, Greenville SC (no WWTP) P-value, Greenville SC (no WWTP) Number, Greenville SC (WWTP) Rho, Greenville SC (WWTP) P-value, Greenville SC (WWTP) Number, Raleigh NC (no WWTP) Rho, Raleigh NC (no WWTP) P-value, Raleigh NC (no WWTP) Number, Raleigh NC (WWTP) Rho, Raleigh NC (WWTP) P-value, Raleigh NC (WWTP) Number
producer defined
Spearman Rho correlation statistics
TABLE 14. SPEARMAN UA DISCHARGE.txt
Table 14. Spearman Rho correlation of unit area stream discharge in cubic meters per second per squar kilometer against SESQA nutrient metrics
U.S. Geological Survey (USGS) National Water Quality Program (NWQP) Regional Stream Quality Assessment Study
Spearman Rho correlation of unit area stream discharge in cubic meters per second per squar kilometer against SESQA nutrient metrics in columns 1-34
Column headers corresponding to Nutrient Variables, Reference Rho, Reference P-value, Reference Number, Washington DC (no WWTP) Rho, Washington DC (no WWTP) P-value, Washington DC (no WWTP) Number, Atlanta (no WWTP) Rho, Atlanta (no WWTP) P-value, Atlanta (no WWTP) Number, Atlanta (WWTP) Rho, Atlanta (WWTP) P-value, Atlanta (WWTP) Number, Ag-CAFO Rho, Ag-CAFO P-value, Ag-CAFO Number, Charlotte NC (no WWTP) Rho, Charlotte NC (no WWTP) P-value, Charlotte NC (no WWTP) Number, Charlotte NC (WWTP) Rho, Charlotte NC (WWTP) P-value, Charlotte NC (WWTP) Number, Greenville SC (no WWTP) Rho, Greenville SC (no WWTP) P-value, Greenville SC (no WWTP) Number, Greenville SC (WWTP) Rho, Greenville SC (WWTP) P-value, Greenville SC (WWTP) Number, Raleigh NC (no WWTP) Rho, Raleigh NC (no WWTP) P-value, Raleigh NC (no WWTP) Number, Raleigh NC (WWTP) Rho, Raleigh NC (WWTP) P-value, Raleigh NC (WWTP) Number
producer defined
Spearman Rho correlation statistics
ScienceBase
U.S. Geological Survey - ScienceBase
mailing and physical
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
There is no guarantee concerning the accuracy of the data. No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to <http://www.usgs.gov/privacy.html> for the USGS disclaimer.
20200827
Paul M. Bradley
U.S. Geological Survey
mailing and physical
720 Gracern Rd, Suite 129
Columbia
South Carolina
29210
USA
803-750-6100
pbradley@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998