13 May '11, 9pm

Morganza Floodway, 1973 [image] #NASA

As flood waters continued to surge through the Mississippi River watershed in May 2011, the U.S. Army Corps of Engineers weighed whether to open spill gates onto the Morganza Floodway. The floodway, designed to reduce water levels in the Mississippi during emergencies, was last open from April 19 to June 13, 1973, the only time it has ever been opened. The top image shows water flowing through the floodway on May 5, 1973, as observed by Landsat 1. The bottom image from Landsat 2 shows the same area in 1977 without flooding. The images include near-infrared, red, and green wavelengths of light. Vegetation appears red, muddy water is greenish brown, clear water is blue-black, and bare soil is gray to tan. In the 1973 image, red areas within the floodway may include vegetation (red) tall enough to stand above the flood water. The floodway lies on the west side of the Mississi...

Full article: http://earthobservatory.nasa.gov/NaturalHazards/view.php?...

Tweets

Morganza Floodway, 1973: Observations by Landsa...

earthobservatory.nasa.gov 13 May '11, 10pm

As flood waters continued to surge through the Mississippi River watershed in May 2011, the U.S. Army Corps of Engineers w...

Morganza Floodway, 1973: Observations by Landsa...

earthobservatory.nasa.gov 13 May '11, 10pm

As flood waters continued to surge through the Mississippi River watershed in May 2011, the U.S. Army Corps of Engineers w...

Mississippi Floods: Here's a view from space of...

earthobservatory.nasa.gov 13 May '11, 10pm

As flood waters continued to surge through the Mississippi River watershed in May 2011, the U.S. Army Corps of Engineers w...

Corps to open Morganza Spillway. Choice of New Orleans under 25' water or flood other towns. #flooding

Corps to open Morganza Spillway. Choice of New ...

americanrivers.org 13 May '11, 12pm

As we grapple with the severity of the Mississippi River flooding, many are asking how we can better protect communities f...

View today of the Morganza Spillway slowly filling with water from the Mississippi, from NASA's Terra satellite.

View today of the Morganza Spillway slowly fill...

earthobservatory.nasa.gov 18 May '11, 9pm

On May 18, 2011, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite observed water in the...

Morganza Floodway after Five Days of Flow [imag...

earthobservatory.nasa.gov 19 May '11, 6pm

Five days after the U.S. Army Corps of Engineers opened a flood control structure, or spillway, onto the Morganza Floodway...

Flood waters flow into the Morganza Spillway on...

earthobservatory.nasa.gov 17 May '11, 2am

On May 14, 2011, the U.S. Army Corps of Engineers opened the Morganza Spillway in an attempt to ease flooding along the Mi...

Morganza Spillway Opens in Louisiana [image] #NASA

earthobservatory.nasa.gov 16 May '11, 9pm

On May 14, 2011, the U.S. Army Corps of Engineers opened the Morganza Spillway in an attempt to ease flooding along the Mi...

Satellite view of Morganza floodway 5 days afte...

earthobservatory.nasa.gov 20 May '11, 4pm

Five days after the U.S. Army Corps of Engineers opened a flood control structure, or spillway, onto the Morganza Floodway...

Army Corps announced that for 1st time in 38 yr...

americanrivers.org 14 May '11, 10pm

Army Corps to open Morganza Spillway Posted on May 14, 2011 | Filed Under: Floods & Floodplains , Restoring Rivers , Small...

The Morganza Spillway with 5 days of Mississipp...

earthobservatory.nasa.gov 20 May '11, 2am

Five days after the U.S. Army Corps of Engineers opened a flood control structure, or spillway, onto the Morganza Floodway...