{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Jennifer Murphy", "hasEmail": "mailto:jmurphy@usgs.gov"}, "description": "Trends in nutrient fluxes and streamflow for selected tributaries in the Lake Erie watershed were calculated using monitoring data at 10 locations. Trends in flow-normalized nutrient fluxes were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season).  Site information and streamflow and water-quality records are contained in 3 zipped files named as follows: INFO (site information), Daily (daily streamflow records), and Sample (water-quality records).  The INFO, Daily (flow), and Sample files contain the input data, by water-quality parameter and by site as .csv files, used to run trend analyses.  These files were generated by the R (version 3.1.2) software package called EGRET - Exploration and Graphics for River Trends (version 2.5.1) (Hirsch and DeCicco, 2015), and can be used directly as input to run graphical procedures and WRTDS trend analyses using EGRET R software.  The .csv files are identified according to water-quality parameter (TP, SRP, TN, NO23, and TKN) and site reference number (e.g. TPfiles.1.INFO.csv, SRPfiles.1.INFO.csv, TPfiles.2.INFO.csv, etc.).  Water-quality parameter abbreviations and site reference numbers are defined in the file \"Site-summary_table.csv\" on the landing page, where there is also a site-location map (\"Site_map.pdf\").  Parameter information details, including abbreviation definitions, appear in the abstract on the Landing Page. \nSRP data records were available at only 6 of the 10 trend sites, which are identified in the file \"site-summary_table.csv\" (see landing page) as monitored by the organization NCWQR (National Center for Water Quality Research). The SRP sites are: RAIS, MAUW, SAND, HONE, ROCK, and CUYA.   \nThe model-input dataset is presented in 3 parts:\n1.\tINFO.zip (site information)\n2.\tDaily.zip (daily streamflow records)\n3.\tSample.zip (water-quality records)\nReference:\nHirsch, R.M., and De Cicco, L.A., 2015 (revised). User Guide to Exploration and Graphics for RivEr Trends (EGRET) and dataRetrieval: R Packages for Hydrologic Data, Version 2.0, U.S. Geological Survey Techniques Methods, 4-A10. U.S. Geological Survey, Reston, VA., 93 p. (at: http://dx.doi.org/10.3133/tm4A10).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9FFOORH", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.5bd1e08be4b0b3fc5ce3188e.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5bd1e08be4b0b3fc5ce3188e", "keyword": ["Great Lakes", "Indiana", "Lake Erie", "Michigan", "Ohio", "USGS:5bd1e08be4b0b3fc5ce3188e", "Weighted regression on time, discharge, and season (WRTDS)", "Western Lake Erie", "environment", "geoscientificInformation", "nitrate", "nitrogen", "nutrient", "phosphorus", "streamflow", "trend", "water quality"], "modified": "2020-08-21T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-85.5833, 40.4333, -80.7833, 42.3333", "theme": ["geospatial"], "title": "Child 1: Nutrient and streamflow model-input data"}