During this 2012 drought season, USACE has published guidance to coordinate a collective Common Operating Picture to monitor ongoing impacts on navigation, identified critical river gages as key monitors for navigation, and implemented Waterway Action Plans. In addition, USACE employs designated assets, such as dredges and survey boats, to prevent and mitigate impacts to navigation and critical works infrastructure. USACE is currently dredging in locations along the Upper Mississippi River, Lower Mississippi River, and the Ohio and Missouri Rivers. Additional locations will be dredged as river stages continue to fall.