Comparison and Assessment of Zero-Rise Floodplain Ordinances
Publication: Journal of Water Resources Planning and Management
Volume 123, Issue 4
Abstract
This paper compares and evaluates the implications of some zero-risk regulations, particularly zero-rise floodplain ordinances. An ordinance for King County, Wash., is used to illustrate the challenges of implementing such restrictions and their resulting implications for bridge design. The evaluation is performed by comparing the King County floodplain regulation to similarly restrictive regulations in other states and counties and to other zero tolerance regulations. The bridge design and construction costs associated with the ordinance since 1990 are also reviewed, as are procedures for obtaining variances from the zero-rise criterion. It was found that in King County the zero-rise criterion compounds the already existing complexities of bridge design requirements. Important differences between the King County regulations and zero-rise requirements in other locales were found to include: freedom from substantial clearance requirements, pier-in-channel prohibitions (unrelated to backwater considerations), exemptions for replacement in-kind, lenient permitting processes for rises where no damage is anticipated, and the ability of approach roads to cause flood. The zero-rise ordinance was found to increase bridge design and construction costs by about 40% on the bridges for which backwater was a constraint. Variance procedures were as impractical in other locales as in King County, but mitigation options, such as the purchase of flooding easements, were more frequently pursued.
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References
1.
Association of State Floodplain Managers, Inc. (ASFPM). (1992). Floodplain management, 1992: state and local programs. Rep.
2.
Besadny, C. B., and Jackson, L. B., (1983). “Cooperative agreement between Wisconsin Department of Transportation and Department of Natural Resources.”Rep., Madison, Wis.
3.
Cross, F. B. (1989). Environmentally induced cancer and the law. Quorum Books, New York, N.Y.
4.
Federal Emergency Mgmt. Agency (FEMA). (1990). “National flood insurance program: regulations for floodplain management and flood hazard identification.”Rep. FEMA, Washington, D.C.
5.
Harvard School of Public Health (HSPH). (1995). “Reform of risk regulation: achieving more protection at less cost.”Rep., Ctr. for Risk Anal., Boston, Mass.
6.
Katsaros, A., (1992). “The politics of developing the King County sensitive areas ordinance,” M. Arch. thesis, Dept. of Arch. and Urban Plng., Univ. of Washington.
7.
King County surface water design manual (1990). King County Dept. of Public Works, Seattle, Wash.
8.
King County. (1992). Proposed capital improvement program—resource book, King County Printshop, Seattle, Wash.
9.
King County. (1993). Proposed capital improvement program—resource book, King County Printshop, Seattle, Wash.
10.
King County. (1994). Proposed capital improvement program—resource book, King County Printshop, Seattle, Wash.
11.
Maryland Department of Natural Resources (MDDNR). (1989). “Construction on non-tidal waters and floodplains.”Annotated Code of Maryland—Subtitle 05 Water Resources Administration, Annapolis, Md.
12.
Robertson, P. D., and Vanderver T. A. Jr. (1992). “Title III—air toxics.”Clean Air Law and Regulation, BNA Books, Washington, D.C.
13.
Transportation Needs Report (TNR). (1993). King County Dept. of Public Works Roads Division Transp. Plng., Seattle, Wash.
14.
U.S. Army Corps of Engineers (USACE). (1986). “Accuracy of computed water surface profiles.”Tech. Paper No. 114, Hydrologic Engrg. Ctr.
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Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jul 1, 1997
Published in print: Jul 1997
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