{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Kristen L Bouska", "hasEmail": "mailto:kbouska@usgs.gov"}, "description": "U.S. Army Corps of Engineers river stage and discharge data (www.rivergages.com) were used to calculate longitudinal connectivity, which is represented by the number of days each lock and dam is in \u201copen river\u201d conditions. During high water conditions, dam gates are generally lifted out of the water or lowered to the river bottom, removing physical barriers to passage (\u201copen river condition\u201d). Each lock and dam in the Upper Impounded and Lower Impounded Reaches has a specific discharge or stage that when reached, results in open river conditions. For each lock and dam, we calculated the average annual number of days in which daily discharge or stage would have resulted in open river conditions between 1985 and 2015. The lock and dams on the Illinois River Reach do not have specific capacities, but records of when the dams are opened and closed were used to estimate criteria for open-river conditions (T. Knox, U.S Army Corps of Engineers, personal communication, 2017) and calculate the percent time in which the dam was in open river conditions over the same period.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9J8BBQ3", "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.60465ef1d34eb120311a41f1.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_60465ef1d34eb120311a41f1", "keyword": ["Illinois River", "Mississippi River", "USGS-CC Upper Mississippi River", "USGS:60465ef1d34eb120311a41f1", "connectivity", "environment", "inlandWaters", "river systems"], "modified": "2021-11-15T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-93.5376, 38.5224, -87.5830, 45.1975", "theme": ["geospatial"], "title": "Percentage of annual days that river stage exceeds 'open river' conditions for lock and dams on the Upper Mississippi River, 1985-2015"}