US Army Corps of Engineers, at http://www.usace.army.mil/Pages/default.aspx : the Web Headquarters of the Army Corps of Engineers, with information about the Agency, its mission and work, and services to the public and the military.
United States Geological Survey, at http://www.usgs.gov/ : From the US Government’s Department of the Interior, this science organization focuses on biology, geography, geology, geospatial information, & water. USGS provides reliable scientific information to describe & understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, energy, & mineral resources; and enhance and protect our quality of life.
DOE Information Bridge: free public access to over 230,000 full-text documents and bibliographic citations of Department of Energy (DOE) research report literature from 1991 to present, covering physics, chemistry, materials, biology, environmental sciences, energy technologies, engineering, computer and information science, renewable energy, and other topics of interest related to DOE's mission.
The Ultimate Civil Engineering Directory, at http://www.tenlinks.com/engineering/civil/index.htm : Links to a multitude of Civil Engineering related websites and resources.
Selected Internet Resources - Engineering - A compilation of engineering resources from around the web, at http://www.loc.gov/rr/scitech/selected-internet/engineering.html