Parallel to ongoing efforts to revise the U.S. Army Corps of Engineers wetland delineation manual for support of Section 404 under the Clean Water Act, the Corps has initiated an effort to develop an "Ordinary High Water" (OHW) delineation manual. The Arid West region is dominated by watersheds with intermittent and ephemeral dry washes. Consequently, many aquatic resources lack the three characteristic features of a wetland, but they still perform ...
Remote sensing techniques were employed to identify aquatic resources, including vernal pools and riparian areas, at Beale Air Force Base (AFB) in September 2005. Aquatic resources previously identified at Beale AFB were delineated in the field and precisely located with a global position system (GPS). Though precise, these GPS maps were not comprehensive enough to fully understand the distribution and character of the aquatic system. Using those field results, we ...
The U.S. Army Corps of Engineers (COE) is actively involved in flood plain management and regulation of dry wash flood plains in the western United States. The COE also regulates "Waters of the United States" (WoUS) under Sec. 404 of the Clean Water Act by determining the extent of surface indicators related to "ordinary" flood discharges known as Ordinary High Water Marks (OHWM). The return interval for inundation to the ...
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