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National Geodetic Survey

NOAA's Office of Marine and Aviation Operations

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Aerial Photography of Flooded Red River Valley

April 20, 2011
Top: Google Earth image of Red River Valley prior to flood conditions; Bottom: NOAA image of same area after flooding.

"Before and after" photos of the Red River Valley along the Minnesota-North Dakota border. This image is over Halstad, Minn.

Top: Google Earth image of Red River Valley prior to flood conditions; Bottom: NOAA image of same area after flooding.

Roll over the image with your mouse to see what the same section of land looked like after the Red River Valley flood. This image is over Halstad, Minn.

Top: Google Earth image of Red River Valley prior to flood conditions; Bottom: NOAA image of same area after flooding.

Roll over the image with your mouse to see what the same section of land looked like after the Red River Valley flood. This image is over Hendrum, Minn.

Last week, the National Geodetic Survey dispatched NOAA's King Air aircraft, equipped with specialized remote sensing equipment, on a mission to collect aerial photography at 10,000 feet (3 km) across areas of the upper Midwest in midst of another spring with severe river flooding caused by melting snow atop already saturated ground.

These "before and after" photos of the Red River Valley along the Minnesota-North Dakota border compare images taken in 2009/2010 by Google® Earth with photos taken from the NOAA aircraft.  Photos were used to assist NOAA's National Weather Service to verify and validate flood models, and also assist local officials in planning their response and recovery efforts.