USGS - science for a changing world

Environmental Health - Toxic Substances

Photo Gallery

Watershed- and Regional Scale Contamination

Graph of daily variation in stream flow at the Santa Cruz River at Trico Road, near Maranna, AZ.
The USGS and its partners conducted a study to determine the temporal occurrence and persistence of emerging contaminants in an effluent-dependent stream (Santa Cruz River at Trico Road, near Maranna, AZ). Sampling were collected at different points during the daily fluctuations for the stream -- from the Emerging Contaminants in the Environment Investigation

Complete Photo Gallery Index

USGS Home Water Climate Change Science Systems Ecosystems Energy and Minerals Environmental Health Hazards

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:
Page Last Modified: Wednesday, 05-Aug-2015 11:15:59 EDT