Modeling

Groundwater monitoring in the Deschutes Basin shows water-level declines are larger than might be expected from climate variations alone, raising questions regarding the influence of groundwater pumping, canal lining, and other human influences.

Henry Hagg Lake is a reservoir located in the foothills of the eastern slope of the Coast Range Mountains of northwestern Oregon. The lake is used for recreation in the summer and flood control in the winter.

The U.S. Geological Survey, U.S. Bureau of Reclamation, and Watercourse Engineering, Inc. are collaborating to develop knowledge and tools to better manage water quality in the Link-Keno reach of the Klamath River and the Lost River.

The U.S. Army Corps of Engineers operates 12 dams in the Willamette River Basin. The dams alter natural temperature and hydrologic regimes. Unnatural water temperatures can negatively impact all life stages of salmonid fish species. Water temperature in the mainstem Willamette River regularly exceeds the standard of 18.0 °C (64.4 °F) designated for salmon and trout rearing and migration for mid...

From 1986 to 2009, the USGS studied various aspects of watershed health in the Yakima River Basin. The results from these studies have been published and are available online .

The USGS has worked since 1998 to monitor and study sediment and turbidity throughout the North Santiam River watershed. As part of that assessment, a focused effort was undertaken to examine the effect that Detroit Lake has on temperature issues and sediment transport. In particular, developing a model that simulates the transport and fate of suspended sediment and the dynamics of water...

The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work.