Colorado Water Science Center
Multimedia
Illinois Gulch near Breckenridge, Colorado
Two synoptic sampling campaigns were conducted near Breckenridge, Colorado, to quantify metal loading to Illinois Gulch, a tributary of the Blue River.
NAAMDRC - A microscopic picture of a Dytiscus insect from the AXL lab
A microscopic picture of a Dytiscus insect from the AXL lab at the Fort Collins Science Center.
CWSC Bathymetry at Clear Creek Reservoir
USGS research vessel collecting bathymetry data at Clear Creek Reservoir.
USGS personnel collecting bathymetry data.
USGS research vessel with Teledyne Odom Hydrographic ES3PT–M integrated multibeam echo sounder and motion sensor submerged on the port side, and Trimble SPS461 GPS receivers mounted on each side of vessel.
Sediment Sampling at A72
Animas River downstream from Silverton, Colorado, showing right and left bank areas where streambed sediment sample was collected near USGS stream gage at site A72 (USGS site ID 09359020). Latitude 37.789964, Longitude -107.667394.
USGS Gage 09358000
USGS stream Gage (USGS site ID 09358000) on Animas River upstream from Silverton and Cement Creek. Latitude 37.811131, Longitude -107.659213.
Animas River Downstream
Animas River downstream from Silverton Colorado, looking upstream toward town of Silverton. Confluence of Animas River and Mineral Creek near center of photograph. Confluence of Cement Creek and Animas River near upstream area of the town of Silverton. Photo taken from Highway 550 heading to Durango.
Animas River at A72
Animas River downstream from Silverton, Colorado showing cableway for USGS stream gage at site A72 (USGS site ID 09359020). Latitude 37.789964, Longitude -107.667394.
Animas River Sample
Animas River downstream from Silverton, Colorado, showing streambed sediment collected from right bank backwater area in scoop, and from left bank cobble area (in jar) near USGS stream gage at site A72 (USGS site ID 09359020). Latitude 37.789964, Longitude -107.667394.
Baker's Bridge Sediment Sample
Animas River samples at Baker's Bridge/Tall Timber Resort (USGS site ID 09359500). Closeup view showing location of streambed sediment sample collection from right side of left channel where river splits into two channels upstream from the Riverside Resort. Latitude 37.457297, Longitude -107.799803.
Cement Creek Close Up
North Fork Cement Creek showing visual results of sodium hydroxide (NaOH) addition which increases the pH causing precipitation of ferric (orange) and ferrous (green) iron hydroxides. Latitude 37.89517, Longitude -107.64656.
Measuring pH
Measuring pH at the outlet of the fourth settling pond downstream from the North Fork Cement Creek. Latitude 37.894451, Longitude -107.64763.