Images

Allison is a Hydrologic Technician with the Colorado Water Science Center at the Lakewood Field Office specializing in streamflow and water quality data collection.

Caleb is a hydrologic technician with the USGS Colorado Water Science Center in Lakewood, CO.

Jessica Sanow is a Hydrologist with the USGS Colorado Water Science Center in Lakewood, CO.

Sam is a Hydrologic Technician with the Colorado Water Science Center (COWSC), Western Colorado Office, in Grand Junction, CO.

James is a Hydrologist with the Colorado Water Science Center (COWSC) in Lakewood, CO. 

USGS employee, Caleb Schraeder, standing in snow and ice covered South Clear Creek above Lower Cabin Creek Reservoir near Georgetown, CO.

Insights gained from stable isotopes and environmental tracers in this study allow a conceptual model to be built that provides information pertinent to groundwater mixing and transport, sulfide oxidation mechanisms, and timeframes of remediation. This conceptual model of the site (not to scale) is based on hydrologic and geochemical data.

Jonathan is a Hydrologic Technician in the USGS Colorado Water Science Center (COWSC) in Lakewood, CO.

Location of groundwater-level monitoring network wells and producing aquifer, Douglas County, Colorado.

Streamflow duration hydrograph for the South Platte River at Englewood, Co. Hydrographs and other information are available at the USGS WaterWatch website.

Photograph of the Elitch Gardens reach on the South Platte River in Denver, Colorado.

Photograph of the reference reach on the South Platte River in Denver, Colorado.

Photograph of USGS employees, Ethan Newman, Katherine Curran, and Lily Delmarsh, driving a boat on Grand Lake.

USGS 09013900 Grand Lake at Grand Lake, CO

Photograph of USGS employees, Lily Delmarsh and Katherine Curran, collecting a water chemistry sample with a Kemmerer sampler. 



USGS 4013311005501401 – Shadow Mountain Lake near Midlake near Grand Lake, Colorado

Photograph of USGS employees, Ethan Newman and Katherine Curran, collecting a depth-integrated, water sample from the photic zone (the layer of water that receives sunlight) using a modified pool hose. Lily Delmarsh (bottom right) is preparing to measure the transparency of the water using a secchi disk.​​​

Groundwater level elevations within the mine workings (indicated by the red dotted lines) and within crystalline bedrock outside the mine workings (indicated by the blue dotted lines) are substantially different from one another.

Will McDermott, a physical scientist with the USGS Colorado Water Science Center, working during site visit to Eagle Creek.

Will McDermott, a physical scientist with the USGS Colorado Water Science Center, working his way across the snow during a site visit at Eagle Creek.

Map showing study reaches and approximate extent of restoration efforts on the South Platte River in Denver, Colorado.

Photograph of Andrea Creighton, a hydrologist in the USGS Colorado Water Science Center.

Aerial photographs of study reaches on the South Platte River in Denver, Colorado.