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RHJV/DWR-FESSRO FLOODPLAIN MANAGEMENT COURSE

10 min. RHJV/DWR-FESSRO FLOODPLAIN MANAGEMENT COURSE. Module 5 Flood Hydrology And Floodplain Types. The Fluvial System. Chang (1988). Federal Stream Corridor Restoration Handbook(1998). Floodplain Classification . Class A: high-energy, Non-cohesive floodplains

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RHJV/DWR-FESSRO FLOODPLAIN MANAGEMENT COURSE

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  1. 10 min RHJV/DWR-FESSRO FLOODPLAIN MANAGEMENT COURSE Module 5 Flood Hydrology And Floodplain Types

  2. The Fluvial System Chang (1988) Federal Stream Corridor Restoration Handbook(1998)

  3. Floodplain Classification • Class A: high-energy, Non-cohesive floodplains • Class B: Medium-energy, Non-cohesive floodplains • Class C: Low-energy, Cohesive floodplains Nanson and Croke (1992)

  4. Floodplain Statistics “…flood plains contribute 25% of all terrestrial ecosystem services, although they cover only 1.4% of the land surface area…” Decreasing gradient Tockner and Stanford (2002)

  5. Floodplain and Food Web Linkages Power et al (2002)

  6. Basin Influences on Flood Hydrology Ward (1978)

  7. Climate Influences on Flood Hydrology Ward (1978)

  8. Urbanization Impacts on Floods • Includes runoff data from Sacramento CA (James, 1965). • From graph, mean annual discharge increases about 2.1 times from rural to urban conditions with 40% impervious area and 20% area served by sewers. Leopold (1968)

  9. References • Chang, H.H., 1988. Fluvial Processes in River Engineering, John Wiley & Sons, New York, NY, 432 p. • Federal Stream Corridor Restoration Handbook (NEH-653), 1998. Stream Corridor Restoration: Principles, Processes, and Practices. By the Federal Interagency Stream Restoration Working Group (FISRWG)(15 Federal agencies of the US gov't). GPO Item No. 0120-A; SuDocs No. A 57.6/2:EN 3/PT.653, October http://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/national/water/?cid=stelprdb1043244 • Leopold, L.B., 1968. Hydrology for Urban Land Planning – A Guidebook on the Hydrologic Effects of Urban Land Use, Geological Survey Circular 554, Washington, D.C., 18 p. • Nanson, G.C. and J.C. Croke, 1992. A genetic classification of floodplains, Geomorphology, 4 (1992) 459-486. • Power, M.E., G. Parker, W.E. Dietrich, and A. Sun, 1995. How does floodplain width affect floodplain river ecology? A preliminary exploration using simulations, Geomorphology 13, pp 301-317. • Tockner, Klement and Jack A. Stanford, 2002. Riverine flood plains: present state and future trends. Environmental Conservation. 29(3): 308-330. • Tockner, K., S. E. Bunn, C. Gordon, R. J.Naiman, G. P. Quinn, and J.A. Stanford, 2008. Flood plains: critically threatened ecosystems, Pages 45–61 in N. Polunin (editor). Aquatic ecosystems: trends and global prospects. Cambridge University Press, Cambridge, UK. • Ward, R., 1978. Floods: A Geographical Perspective, John Wiley & Sons, New York NT, 244 p.

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