[lemma=□]
[lemma=floodplain]
" We're disappointed , " says Rosenberg , " but NRDC will continue to fight for full floodplain protection for wetlands to preserve critical environmental resources and prevent flooding . What should be visible along the floodplains of Rock Creek in Washington , D.C ., is a mix of native spring plants , not this intruder from Western Europe . This ancient floodplain laid down great quantities of sand and gravel , and these deposits were mined for several decades until the early 1970s . The largest includes floodplains and terrace landforms in the Ohio and Wabash Valleys and their tributaries , the Little Wabash River , Skillet Fork , and the Saline River . According to the checklist , the Project as proposed would have effects on , among other things , traffic , water and sewer systems , recreational facilities , slopes , erosion , floodplains , wildlife , and vegetation . In small floodplain depressions that are artificially flooded in summer , methane emission starts on the first day of flooding . A number of sand and gravel pits are active in the floodplains of the streams and rivers along the Front Range . There are no longitudinal encroachments of the base floodplain ; the hydraulic risks are minimal as the major waterways will be mitigated in such a manner as to allow discharges to remain relatively unchanged ; the proposed action will have no effect on future floodplain development ; there are no significant hydraulic adverse impacts on natural and beneficial floodplain values ; there are no special hydraulic mitigation measures necessary ; and the proposed action does not constitute a significant floodplain encroachment . Gren ( 1994 ) conducted a total valuation study of the Danube River floodplains to assist with determining the potential benefits from improving the water quality and overall management of the Danube . The WWF-Zambia Wetlands Project 's activities in the Kafue Flats Project Area represent an important case study of current initiatives in Zambia which firmly link floodplain wetlands management with human socioeconomic development at the local and supra-local community levels .