Esenwein RCKoenig TNGorini RF Merritt DH2010-02-152010-02-151997 199http://hdl.handle.net/1969.3/22904567-569The purpose of the Demonstration Marsh was to identify environmental and design parameters and management requirements needed for the establishment, growth and survival of created marsh. Key operating requirements for the typical dredging equipment most likely to be utilized for the future placement of maintenance dredged material for the proposed widening and deepening of the Houston Ship Channel were employed in the construction of the site. The 89 ha (220 acre) Demonstration Marsh is similar in size to the individual cells of the proposed beneficial uses sites which range from 57 ha to 142 ha (140 acres to 350 acres) in size. Construction and management techniques developed for the Demonstration Marsh can be directly applied to marsh creation for the widening and deepening project. The Demonstration Marsh project required an individual Department of the Army Permit. The proposal required the filling of shallow bay bottom -- an activity which is not ordinarily preferred by the USACE, resource agencies, or environmental interests. The individual permit process required a full assessment of environmental impact and rigorous application of the EPA's 404(b)(1) guidelines. In addition, a permit amendment was required for the construction of levee protection which was installed one year after site constructionAQ 00001 Water Resources and SuppliesConstructionDredge spoilDredgingEcosystem managementEE 10 General Environmental EngineeringEnvironment managementEnvironmental impactEnvironmental issuesEnvironmental managementLeveesMarshesNavigational channelsPermitsQ5 01521 Mechanical and natural changesUSA,TexasUSA,Texas,HoustonWater policyWater resourcesCONF