Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018 (output data)
The datasets provided here are the output from the Seasonal Kendall Trend (SKT) test and Weighted Regressions on Time, Discharge, and Season (WRTDS) model that characterize changes in water quality in rivers and streams across the Delaware River Basin. SKT results are compiled in "skt_out.csv" for all combinations of site, water-quality parameter, and trend period. WRTDS results are compiled in four datasets. If unspecified, generalized flow normalization (GFN) results are reported. Stationary flow normalization (SFN) results are indicated in the datasets. "wrtds_out_annResults.csv" contains the annual estimates of mean concentration and load and GFN and SFN estimates by site and parameter for the entire calibration period. "wrtds_out_annResultsCIs.csv" gives confidence intervals for GFN annual estimates. "wrtds_out_bootOut.csv" gives the results of the bootstrap trend test by site, parameter, and trend period. "wrtds_out_pairsOut.csv" gives the trend component estimates (concentration-discharge trend component (CQCT, also referred to as the "management" trend component (MTC)) and discharge trend component (QTC)) and related information, by site, parameter, trend period, and estimate type (i.e. concentration or load). Finally, the "eList" for each WRTDS model (site-parameter combination) is available in the zipped folder.
References Cited:
Hirsch, R.M., and De Cicco, L.A., 2015, User guide to Exploration and Graphics for RivEr Trends (EGRET) and dataRetrieval: R packages for hydrologic data (version 2.0, February 2015): U.S. Geological Survey Techniques and Methods book 4, chap. A10, 93 p., https://doi.org/10.3133/tm4A10.
Complete Metadata
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| description | The datasets provided here are the output from the Seasonal Kendall Trend (SKT) test and Weighted Regressions on Time, Discharge, and Season (WRTDS) model that characterize changes in water quality in rivers and streams across the Delaware River Basin. SKT results are compiled in "skt_out.csv" for all combinations of site, water-quality parameter, and trend period. WRTDS results are compiled in four datasets. If unspecified, generalized flow normalization (GFN) results are reported. Stationary flow normalization (SFN) results are indicated in the datasets. "wrtds_out_annResults.csv" contains the annual estimates of mean concentration and load and GFN and SFN estimates by site and parameter for the entire calibration period. "wrtds_out_annResultsCIs.csv" gives confidence intervals for GFN annual estimates. "wrtds_out_bootOut.csv" gives the results of the bootstrap trend test by site, parameter, and trend period. "wrtds_out_pairsOut.csv" gives the trend component estimates (concentration-discharge trend component (CQCT, also referred to as the "management" trend component (MTC)) and discharge trend component (QTC)) and related information, by site, parameter, trend period, and estimate type (i.e. concentration or load). Finally, the "eList" for each WRTDS model (site-parameter combination) is available in the zipped folder. References Cited: Hirsch, R.M., and De Cicco, L.A., 2015, User guide to Exploration and Graphics for RivEr Trends (EGRET) and dataRetrieval: R packages for hydrologic data (version 2.0, February 2015): U.S. Geological Survey Techniques and Methods book 4, chap. A10, 93 p., https://doi.org/10.3133/tm4A10. |
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| identifier | http://datainventory.doi.gov/id/dataset/USGS_5eeca93382ce3bd58d8a27be |
| keyword |
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| modified | 2020-12-03T00:00:00Z |
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| spatial | -76.7285, 38.3589, -73.7183, 42.6663 |
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| title | Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018 (output data) |
