September 12, 2011 Sediment Plumes in the Hudson River
September 2, 2010 Sediment Plumes in the Hudson River
acquired September 12, 2011 download large image (4 MB, JPEG, 3600x5400 - left)
acquired September 12, 2011 download GeoTIFF file (32 MB, TIFF, 3600x5400)
acquired September 2, 2010 download large image (4 MB, JPEG, 3600x5400 - right)
acquired September 2, 2010 download GeoTIFF file (28 MB, TIFF, 3600x5400)
Sediment Plumes in the Hudson River
acquired September 12, 2011 download large image (4 MB, JPEG, 3600x5400)
acquired September 12, 2011 download GeoTIFF file (32 MB, TIFF, 3600x5400)
Sediment Plumes in the Hudson River
acquired September 2, 2010 download large image (4 MB, JPEG, 3600x5400)
acquired September 2, 2010 download GeoTIFF file (28 MB, TIFF, 3600x5400)

In the wake of Hurricane Irene and Tropical Storm Lee, sediment choked the Hudson River in New York City in early September 2011. The river’s unusual brown or reddish hue was likely driven by runoff occurring upstate.

The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured these natural-color images of the Hudson River and East River. Both images are rotated and north is at right. The top image shows the area on September 12, 2011. The bottom image shows the same place about a year earlier, on September 2, 2010. In September 2010, the water is navy blue. One year later, the water is muddy brown, and the brown hue appears more intense in the Hudson River than in the nearby East River.

Flooding not only raises river levels, but also increases the amount of sediment they carry. Torrential rain eats away at the ground, washing mud and debris into streams. After it is deposited into a river, sediment may sink to the bottom of the riverbed, or may flow with the water toward the sea. Multiple rivers feed the Hudson, and some of the sediment winding up in the river in early September 2011 included reddish clays from the Catskills region, The New York Times reported.

  1. References

  2. Kilgannon, C. (2011, September 7). The Hudson is red. The New York Times. Accessed September 13, 2011.
  3. Walsh, G.M., Associated Press. (2011, September 10). Mixed picture for paddlers, rafters as flooding from Irene, Lee ebbs in NY, Pa. The Republic. Accessed September 13, 2011.

NASA Earth Observatory image created by Jesse Allen and Robert Simmon, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Caption by Michon Scott.

Instrument(s): 
EO-1 - ALI

Sediment Plumes in the Hudson River

Image Location
Image Location
More in this Event (view all)
Left
Tropical Storm Lee Tropical Storm Lee Muddy Susquehanna in Harrisburg, Pennsylvania Sediment Plumes in the Hudson River
Right