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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library


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Image Number K8721-3

Technician Jeff Nichols collects a water sample from the Walnut Creek watershed in Ames, Iowa. Samples are collected weekly form this area and surrounding watersheds to study the effects farming practices have on water quality.

Photo by Keith Weller.



640 pixels wide: (k8721-3.jpg)




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Last Modified: 5/23/2006
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