In response to dangerous flood levels near the confluence of the Ohio and Mississippi Rivers, the US Army Corps of Engineers (USACE) activated the Birds Point-New Madrid floodway at 10:03 pm on May 2, 2011 by detonating explosives along a stretch of the Mississippi River levee just downstream of Cairo, Illinois. The resulting inflow of water into the 130,000 acre floodway caused the Ohio river level near Cairo to drop nearly 1/2 foot during the first hour of operation. Two outflow breaches were initiated at 12:40 pm on May 3 and at 14:39 on May 5, 2011. On-site USGS crews are providing vital floodway data to the USACE and other agencies.
Link in Google Maps with KMZ file:
Link in TNM Viewer with same KMZ file:
Data Collection Map:
Click the map image to open a KMZ file showing recent USGS measurement activities in the Birds Point-New Madrid floodway area. Users lacking a KMZ viewer such as Google Earth may click here to view the map in a separate browser window but will have reduced control over the map.
(Though The National Map Viewer IT is not scaled to be used for burst large event response - i.e. an earthquake occurs - for general scientific and other services such as this, it is a very good mashup use)
USGS Office of Surface Water (OSW), Waters Resources Division (WRD)
Ray Fox USGS Geospatial Liaison for MO
Bob Bewley USGS Geospatial Liaison - Emer. Ops
Regional Executive, South Central States
U.S. Geological Survey