Baseline Water Quality Data Inventory and Analysis: Niobrara National Scenic211 Riverway

摘要

This document presents the results of surface-water-quality data retrievals for211u001eNiobrara National Scenic Riverway from six of the United States Environmental 211u001eProtection Agency (EPA) national databases: (1) Storage and Retrieval (STORET) 211u001ewater quality database management system; (2) River Reach File (RF3); (3) 211u001eIndustrial Facilities Discharge (IFD); (4) Drinking Water Supplies (DRINKS); (5) 211u001eFlow Gages (GAGES); and (6) Water Impoundments (DAMS). The document provides: (1) 211u001ea complete inventory of all retrieved water quality data, water quality stations, 211u001eand the entities responsible for data collection; (2) descriptive statistics and 211u001eappropriate graphical plots of water quality data characterizing annual and 211u001eseasonal central tendencies and trends; (3) a comparison of the park's water 211u001equality data to relevant EPA and Water Resources Division water quality screening 211u001ecriteria; and (4) an Inventory Data Evaluation and Analysis to determine what NPS-211u001e75 'Level I' water quality parameters have been collected in the park. The 211u001eresults of the retrievals for the study area from the IFD, DRINKS, GAGES, and 211u001eDAMS databases located one industrial discharger, no drinking water intakes, nine 211u001egaging stations, and five water impoundments. The results of the STORET retrieval 211u001efor the study area yielded 40,781 observations for 281 separate parameters 211u001ecollected by the EPA, U.S. Geological Survey, and Nebraska Department of 211u001eEnvironmental Control at 50 monitoring stations.