SEAINT Structural Engineers Association - International
Topics are generally related to engineering, business practice, and information sources. Currently the list has over thousand subscribers and you can expect 20 to 30 email's per day. There is also an Email archive you may use to review previous correspondence.
Geo Discussion Forum
Design, analysis, construction and investigations in geotechnical engineering.
Water Resources Discussion List
From The Water Quality Information Center at the National Agricultural Library Agricultural Research Service, U. S. Department of Agriculture.