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This data release supports the following publication: Senior, Lisa A., 2017, Estimated Fecal Coliform Bacteria Concentrations Using Near Real-Time Water-Quality and Streamflow Data From Five Stream Sites in Chester County, Pennsylvania, 2007–16: U.S. Geological Survey Scientific-Investigations Report 2017–5075 (https://doi.org/10.3133/sir20175075). The U.S. Geological Survey (USGS), in cooperation with the Chester County Health Department (CCHD) and the Chester County Water Resources Authority (CCWRA), has collected discrete stream samples for analysis of fecal coliform concentrations during March–October annually at or near five gaging stations where near real-time continuous data on stream discharge, turbidity,...
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These data are supplemental rip-rap gradation data (Wolman Pebble Count) in text (.txt) format, collected during 2014-2018 field seasons for select bridges in the United States. These data were collected using a measuring tape to determine riprap gradation (D15, D50, D85, and D100) on in-place riprap at bridge piers and/or abutments at various locations in each study reach. They supplement the Geospatial Data for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016–18. For high-resolution sites, traditional multibeam surveys were conducted using methods described in Huizinga (2015).
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These data are supplemental site information in portable document format (.pdf) collected during 2016-2018 field seasons for select bridges in the United States (Dudunake and others, 2018). These files describe building plans for countermeasures, a field from to describe conditions during site assessment, and a photo summary of the study area.
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Scouring of streambed material surrounding bridge structures is a leading cause of bridge failure in the United States. Damages resulting from bridge failure oftentimes lead to financial burdens and loss of life. To date, there has been no comprehensive evaluation of the current (2016) effectiveness of the guidance or overall long-term performance of bridge-scour countermeasures provided in the Federal Highway Administration, Hydraulic Engineering Circular No. 23, Bridge Scour and Stream Instability Countermeasures. To that end, the U.S. Geological Survey, in cooperation with the Federal Highway Administration, obtained bathymetric, topographical, and other data at 20 of the surveyed sites across the United States...


    map background search result map search result map Geospatial Data for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016–18 SiteID-012 Brandywine Creek at SR-3062, near Coatesville, PA Archival data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017) Particle Size Analysis for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2014-18 Site Information for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016-18 SiteID-012 Brandywine Creek at SR-3062, near Coatesville, PA Archival data for regression models developed to estimate fecal coliform concentrations at five stream sites, Chester County, Pennsylvania (2017) Geospatial Data for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016–18 Particle Size Analysis for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2014-18 Site Information for Bridge Scour Countermeasure Assessments at Select Bridges in the United States, 2016-18