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<br />system net benefits subject to accomplishment of performance targets. The
<br />system is described by hydrologic data, component performance, and cost
<br />functions and flow damage information for damage centers. The system compo-
<br />nents that may be sized include detention storage reservoirs, pumping, and
<br />diversion facilitieS. Initial applications suggest that the technique has considerable
<br />value in urban flood-control plan formulation and evaluation studies.
<br />
<br />ACKNOWLEDGMENTS
<br />
<br />,
<br />
<br />The technique described herein was developed at the Hydrologic Engineering
<br />Center, United States Army Corps of Engineers, Davis, Calif., by the writer
<br />at the request of the United States Army Engineer District, St. Louis, Mo.
<br />The sponsorship, encouragement, and support of James Dexter of the Urban
<br />Studies Section, St. Louis District, was instrumental in the development of
<br />the technique.
<br />
<br />ApPENDIX I.-REFERENCES
<br />
<br />I. Arvanitidis, N. V.. et aI., "A Computer Simulation Model for Rood Plain Development,
<br />Part I: Land Use Planning and Benefit Evaluation," IWR Report 72-1, Institute for
<br />Water Resources, United States Army Corps of Engineers, Alexandria, Va., Feb.,
<br />1972.
<br />2. Beard, L. R., "Optimization Techniques for Hydrologic Engineering," Hydrologic
<br />Engineering Center Technical Paper No.2, Davis, Calif., Apr., 1%6.
<br />3. Cline, J. N., "Planning Rood Control Measures by Digital Computers," University
<br />of Kentucky Water Resources Institute, Lexington, Ky., 1%8.
<br />4. Davis, D. W., "Rood Control System Component Optimization-HEC-I Capability,"
<br />Training Document (Draft), The Hydrologic Engineering Center, Davis, Calif., Oct.,
<br />1974.
<br />5. Day, J. c., and Weisz, R. N., "A Methodology for Planning Land Use and Engineering
<br />Alternatives for Rood Plain Management," IWR Paper 74-P2, Institute for Water
<br />Resources, United States Army Corps of Engineers, Alexandria, Va., Apr., 1974.
<br />6. HEC-I Flood Hydrograph Users Manual, The Hydrologic Engineering Center, Davis,
<br />Calif., Jan., ]973.
<br />7. Jacoby and Loucks, "Combined Use of Optimization and Simulation Models in River
<br />Basin Planning," Water Resources Research, Vol. 8, 1972, pp. 140]-]413.
<br />8. James, L. D., "Nonstructural Measures for Rood Control," Water Resources Research,
<br />Vol. I, 1%5, pp. 9-24.
<br />9. James, L. D., "Economic Analysis of Alternative Rood Control Measures," Water
<br />Resources Research, Vol. 3, ]%7, pp. 333-343.
<br />
<br />APPENDIX II,-NOTATION
<br />
<br />The following symbols are used in this paper:
<br />
<br />,
<br />p
<br />
<br />A
<br />AD.
<br />J
<br />a
<br />C
<br />,
<br />CNST
<br />DEV
<br />EXP
<br />f(X) =
<br />
<br />= normalizing constant;
<br />= location expected annual damage;
<br />= outlet flow area;
<br />= component equivalent annual cost;
<br />= weighting constant;
<br />= difference between target and simulated flow;
<br />= exponent for tailwater conditions;
<br />magnitude of objective function;
<br />
<br />"
<br />
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