Encroachment Construction : Placement of fill, or similar alteration of topography in the floodplain that hinders the passage of water or otherwise affects the flood flow
New Hampshire Floodplain Management Handbook (Appendix B), Glossary, New Hampshire Office of Energy and Planning, NH, USA 2006. http://www.nh.gov/oep/programs/floodplainmanagemen t/documents/NHFloodplainHandbook2006.pdf, (ND/ Flood - Amer) {169}