Filters: Tags: Boulder County (X) > Types: Shapefile (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (2) Types Downloadable (2) Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) Contacts Connor P Newman U.S. Geological Survey - CERSC Data Management Services Project Colorado Water Science Center Central Energy Resources Science Center U.S. Geological Survey More... Categories Data (2) pre-SM502.8 (1) Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (1) Harvest Set (2) Tag Schemes None (2) USGS Thesaurus (1) ArcIMS Metadata Server Theme Codes (1) EnergyResourceActivities (1) Common geographic areas (1) View Results as: JSON ATOM CSV

Hydrologic and Geochemical Data and Models Supporting Integrated Evaluation of the Captain Jack Superfund Site, Boulder County, Colorado The Captain Jack Superfund site near Ward, Colorado hosts extensive interconnected underground mine workings, which drain via the Big Five Adit. Drainage from the adit has historically been acidic with elevated concentrations of metals. In 2018 the U.S. Environmental Protection Agency (EPA) utilized a subsurface remediation strategy consisting of the installation of a hydraulic bulkhead within the workings to preclude drainage out of the mine. To understand the processes occurring during water impoundment within the mine workings, the U.S. Geological Survey (USGS), in cooperation with EPA, completed water-quality sampling and analysis during 2020 as water was impounded within the mine workings. The USGS sampling... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Boulder County, Colorado, Geochemistry, Hydrology, USGS Science Data Catalog (SDC), All tags... Ward, Water Quality, Water Resources, abandoned mines and quarries, geochemistry, groundwater age, groundwater quality, hydrology, mine drainage, mineral deposits, noble gas elements, oxygen isotope analysis, rare earth elements, tracer study, water-level measurements, Fewer tags Denver Coal Basin boundary from 1999 National Coal Resource Assessment This ArcView shapefile contains a polygon representing the extent of the Denver coal basin boundary. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adams County, Arapahoe County, Boulder County, Colorado, Denver County, All tags... Denver coal basin, Denver coal basin, Douglas County, El Paso County, Elbert County, Geology, Jefferson County, Morgan County, Northern Rocky Mountain and Great Plains Coal Resources Assessment, Northern Rocky Mountain and Great Plains Coal Resources Assessment, USGS Science Data Catalog (SDC), Weld County, coal, economy, environment, geoscientificInformation, nca2000, nrockiescoal, Fewer tags