Filter Total Items: 137
Date published: June 22, 2007

River Input Monitoring

The objective of this study is to provide concentrations and estimates of loads and trends of suspended solids, nitrogen, phosphorus, and other selected constituents at the James, Rappahannock, Appomattox, Pamunkey, and Mattaponi Rivers.

Contacts: Douglas L Moyer
Date published: September 30, 2006

The Chesapeke Bay Impact Crater

The International Continental Scientific Drilling Program and the U.S. Geological Survey drilled a 1,766-m-deep test hole near the center of the Chesapeake Bay impact structure in 2005 and 2006. Learn more here:

Date published: September 30, 2006

USGS-Chesapeake Bay Program Watershed Model

The USGS is collaborating with the Chesapeake Bay Program (CBP) to incorporate the USGS Potomac Watershed and Chesapeake Bay Virginia Watershed models into Phase 5 of the Chesapeake Bay Watershed Model (CBWM)

Date published: February 22, 2006

Frederick County Carbonate Aquifer Appraisal

The objective of this study is to better characterize the carbonate aquifer system in the Northern Shenandoah Valley and provide relevant hydrogeologic information that can be used to guide the development and management of this important water resource.

Date published: November 15, 2001
Status: Archived


A GIS Database for Sage-grouse and Shrubsteppe Management in the Intermountain West

Contacts: Steven E Hanser