Report of findings : wetland delineation investigation : Rocky Mountain Arsenal
Dataset Identification:
Resource Abstract:
ESCO Associates Inc. was subcontracted by Gannett Fleming, Inc., a contractor to the United States Environmental Protection
Agency (EPA), to conduct a survey of wetlands within the Rocky Mountain Arsenal National Wildlife Refuge (RMA). The product
of this project is a wetland vegetation map. RMA is a CERCLA site in Commerce City in southwestern Adams County, Colorado,
encompassing approximately 26 square miles. Surface waters entering the site are chiefly in First Creek and the Highline Lateral
in the site's southeast corner. Some surface water also enters the site's southern boundary (56th Street) via several smaller
ditches. Ground water daylights at seeps at various locations on the site. The site includes large areas formerly cropped
for small grains and a few areas of remnant natural prairie grassland. Natural drainages have largely been straightened ("channelized")
in historic time and the extent of well-wetted floodplain has been substantially reduced. Reservoirs for the original purpose
of irrigation water storage in the southern part of the area have developed extensive wetted zones in their peripheries. Supply
and distribution ditches associated with this irrigation system are scattered through the southern part of the AMA site. This
project involved mapping wetland plant communities in the field from 25 August through 20 October 1998, on digital orthophotos
provided by the Remediation Venture Office Geographical Information Systems (GIS) Department. Photo points of sampling location
are included in this report.
Citation
Title Report of findings : wetland delineation investigation : Rocky Mountain Arsenal