Several studies are ongoing at sites and scales beyond that of individual mines. These studies are detailed below.
Uranium and Arsenic in Groundwater in the Grand Canyon Region
Since 2014, the USGS has planned and conducted scientific investigations to address the uncertainties of potential uranium-mining effects. USGS collects groundwater samples in the Grand Canyon region to understand the current state of groundwater chemistry in the region, to monitor for changes in groundwater chemistry that may be the result of mining activities, and to identify "hot spots" with elevated concentrations and investigate the causes.
The data on uranium and arsenic concentrations in groundwater samples in the Grand Canyon region is presented in an interactive web map. The map allows users to navigate to different parts of the Grand Canyon region and see for themselves the uranium and arsenic concentrations in wells and springs that have been sampled in the area.
Uranium in Spring Water North of Grand Canyon Likely Not Related to Nearby Mining Activity
Uranium levels in Pigeon Spring, just north of the Grand Canyon, are likely due to a natural source of uranium and not related to the nearby former Pigeon Mine
Activities listed below are scientific research studies occurring at this site. Studies within the Grand Canyon region are grouped by theme and each theme has specific tasks (referenced by task number).
The View Activity button below each task will open a separate window with detailed activity information.