System Downtime Notification
On Saturday, November 1, 2014 from 11:00 PM EST to November 2, 2014 7:00 AM EST, will be offline for site maintenance.
Email us or call 1-800-795-1747 for assistance. Thanks for your patience.
Please upgrade your browser. This site requires a newer version to work correctly. Read more


area that has not been graded, compacted, cleared, or disturbed and that supports (or could support) open space, habitat, or natural hydrology.

See also: previously disturbed