The site navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.
The Common Risk Model for Dams: A Portfolio Approach to Security Risk Assessments
Systems and Analyses Center
Strategy, Forces and Resources Division
The Common Risk Model for Dams (CRM-D) is a consistent, mathematically rigorous, and easy to implement method for security risk assessment of dams, navigation locks, hydropower projects, and similar infrastructures.