An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Image Number K4012-17 |
Range scientist Patricia Bartling reviews land use data for the Sycamore Creek watershed in Michigan for inclusion in NLEAP - a computer program developed to predict potential leaching of nitrate nitrogen and its impact on underlying aquifers.
Photo by Keith Weller.
Please visit our Image Gallery
