NASA: USA - Colorado - Floods - 09.27.13

Posted by Ricardo Marcenaro | Posted in | Posted on 17:27



Floods in Colorado
acquired September 17, 2013 download large image (4 MB, JPEG, 4000x4000)
acquired September 17, 2013 download GeoTIFF file (56 MB, TIFF)
Floods in Colorado
acquired June 29, 2013 download large image (3 MB, JPEG, 4000x4000)
acquired June 29, 2013 download GeoTIFF file (177 MB, TIFF)
acquired June 29 - September 17, 2013 download Google Earth file (KML)
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Though water levels on the South Platte River were receding, muddy brown waters were still out of the river’s banks near Greeley, Colorado, on September 17, 2013, when the Operational Land Imager (OLI) on the Landsat 8 satellite acquired this image. At the time, the river was more than six feet above flood stage, down from more than eight feet above flood stage.
The image shows that the flood has washed away roads, including sections of U.S. Highway 34. Farmland and a few developed areas are under water. Heavy rain caused flooding across the Front Range of the Rocky Mountains starting on September 11, and much of that water made its way into the South Platte River. The river reached a record 18.79 feet in the early morning hours of September 14. The previous record crest was 11.73 feet. Flood stage is 10 feet. As the water subsides in Colorado, it is expected to swell the river downstream in Nebraska.
As of September 18, floods had affected 17 counties in Colorado, leaving six people dead, 306 missing, and more than 18,000 evacuated, according to the Colorado Office of Emergency Management. Early estimates place the cost of the floods at two billion dollars.
Though destructive and costly, all of the excess water may help parts of Colorado recover from drought. The rain helped refill some depleted reservoirs and recharge dry soil. However, it also damaged irrigation infrastructure, so the impact on farmers is mixed.

  1. References

  2. CNN Money (2013, September 19) Colorado floods: Costly and often uninsured. Accessed September 19, 2013.
  3. Colorado Office of Emergency Management (2013, September 18) Statewide flood quick facts: September 18 at 2 pm. Accessed September 18, 2013.
  4. Denver Post (2013, September 18) Western Neb. River surging from trickle to flood. Accessed September 18, 2013.
  5. The Greeley Tribune (2013, September) Damaged roads pose biggest problem for many in Weld County. Accessed September 18, 2013.
  6. The Greeley Tribune (2013, September) Floods mean more water for Weld ag next year, but just as many problems. Accessed September 19, 2013.
  7. National Weather Service Advanced Hydrologic Prediction Service (2013, September 18) South Platte River near Kersey. Accessed September 18, 2013.
NASA Earth Observatory image by Jesse Allen and Robert Simmon, using Landsat data from the U.S. Geological Survey. Caption by Holli Riebeek.
Instrument: 
Landsat 8 - OLI




NASA: USA - Colorado - Floods - 09.27.13




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