{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Alissa L Coes", "hasEmail": "mailto:alcoes@usgs.gov"}, "description": "This data release contains six different datasets that were used in the report SIR 2018-5108. These datasets contain discharge data, discrete dissolved-solids data, quality-control discrete dissolved data, and computed mean dissolved solids data that were collected at various locations between the Hoover Dam and the Imperial Dam.\nStudy Sites:\nSite 1: Colorado River below Hoover Dam\nSite 2: Bill Williams River near Parker\nSite 3: Colorado River below Parker Dam\nSite 4: CRIR Main Canal\nSite 5: Palo Verde Canal\nSite 6: Colorado River at Palo Verde Dam\nSite 7: CRIR Lower Main Drain\nSite 8: CRIR Upper Levee Drain\nSite 9: PVID Outfall Drain\nSite 10: Colorado River above Imperial Dam\nDiscrete Dissolved-solids Dataset and Replicate Samples for Discrete Dissolved-solids Dataset:\nThe Bureau of Reclamation collected discrete water-quality samples for the parameter of dissolved-solids (sum of constituents). Dissolved-solids, measured in milligrams per liter, are the sum of the following constituents: bicarbonate, calcium, carbonate, chloride, fluoride, magnesium, nitrate, potassium, silicon dioxide, sodium, and sulfate.  These samples were collected on a monthly to bimonthly basis at various time periods between 1990 and 2016 at Sites 1-5 and Sites 7-10. No data were collected for Site 6: Colorado River at Palo Verde Dam.\nThe Bureau of Reclamation and the USGS collected discrete quality-control replicate samples for the parameter of dissolved-solids, sum of constituents measured in milligrams per liter. The USGS collected discrete quality-control replicate samples in 2002 and 2003 and the Bureau of Reclamation collected discrete quality-control replicate samples in 2016 and 2017. Listed below are the sites where these samples were collected at and which agency collected the samples.  \nSite 3: Colorado River below Parker Dam: USGS and Reclamation\nSite 4: CRIR Main Canal: Reclamation\nSite 5: Palo Verde Canal: Reclamation\nSite 7: CRIR Lower Main Drain: Reclamation\nSite 8: CRIR Upper Levee Drain: Reclamation\nSite 9: PVID Outfall Drain: Reclamation\nSite 10: Colorado River above Imperial Dam: USGS and Reclamation\nMonthly Mean Datasets and Mean Monthly Datasets:\nMonthly mean discharge data (cfs), flow weighted monthly mean dissolved-solids concentrations (mg/L) data and monthly mean dissolved-solids load data from 1990 to 2016 were computed using raw data from the USGS and the Bureau of Reclamation. This data were computed for all 10 sites. Flow weighted monthly mean dissolved-solids concentration and monthly mean dissolved-solids load were not computed for Site 2: Bill Williams River near Parker.\nThe monthly mean datasets that were calculated for each month for the period between 1990 and 2016 were used to compute the mean monthly discharge and the mean monthly dissolved-solids load for each of the 12 months within a year. Each monthly mean was weighted by how many days were in the month and then averaged for each of the twelve months. This was computed for all 10 sites except mean monthly dissolved-solids load were not computed at Site 2: Bill Williams River near Parker. Site 8a: Colorado River between Parker and Palo Verde Valleys was computed by summing the data from sites 6, 7 and 8.\nBill Williams Daily Mean Discharge, Instantaneous Dissolved-solids Concentration, and Daily Means Dissolved-solids Load Dataset:\nDaily mean discharge (cfs), instantaneous solids concentration (mg/L), and daily mean dissolved solids load were calculated using raw data collected by the USGS and the Bureau of Reclamation. This data were calculated for Site 2: Bill Williams River near Parker for the period of January 1990 to February 2016.\nPalo Verde Irrigation District Outfall Drain Mean Daily Discharge Dataset:\nThe Bureau of Reclamation collected mean daily discharge data for the period of 01/01/2005 to 09/30/2016 at the Palo Verde Irrigation District (PVID) outfall drain using a stage-discharge relationship.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/F7SQ8ZN4", "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.5aa042f2e4b0b1c392e6abff.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5aa042f2e4b0b1c392e6abff", "keyword": ["Arizona", "California", "Colorado River", "Dissolved Solids", "Hoover Dam", "Imperial Dam", "Model", "Nevada", "Parker Dam", "USGS:5aa042f2e4b0b1c392e6abff", "Water Quality", "stream discharge"], "modified": "2020-08-07T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-115.8453, 32.7731, -113.5162, 36.1952", "theme": ["geospatial"], "title": "Overview Metadata for the Data used in te Conceptual and Numerical Model of the Colorado River (1990-2016)"}