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<br />-23-
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<br />
<br />Another approach would be to redefine what constitutes
<br />severe weather according to land usage and human acti,rities with-
<br />in the operations area. If the severe weather threat is from
<br />flood plains, proj ect operators should be aware of thE~ locations
<br />of population centers relative to streams. Slopes of drainage
<br />surfaces, vegetation and soil types help determine runoff rates.
<br />In some areas there can be virtually no threat from excessive
<br />rainfall whereas, in other areas, potential heavy rain condi-
<br />tions should be viewed with caution.
<br />
<br />REFERENCES
<br />
<br />Achtemeier, G., P. Hildebrand, P. Schickendanz, B. Ackerman,
<br />S. Changnon, Jr., and R. Semonin, 1978: Illinois Precipi-
<br />tation Enhancement Program (Phase 1) and design and eval-
<br />uation techniques for High Plains cooperative program.
<br />Illinois State Water Survey, Final Rep., Contract 14-06-
<br />D-7197 , 313 pp.
<br />
<br />Ackerman, B., G. Achtemeier, H. Appleman, S. Changnon, Jr.,
<br />F. Huff, G. Morgan, Jr., P. Schickendanz and R. Semonin,
<br />1976: Design of the High Plains Experiment with specific
<br />focus on Phase 2, Single-cloud experimentation. Illinois
<br />State Water Survey, Final Report, Contract l4-06-D-79l97,
<br />231 pp.
<br />
<br />Bureau of Reclamation, D~NRM, 1973:
<br />High Plains cooperativ,e program.
<br />
<br />Conceptual plan for a
<br />Denver, 52 pp.
<br />
<br />Changnon, S. A., Jr., 197.2: Examples of economic losses from
<br />hail in the United States. J. Appl. Meteor., 11, 1128-1137.
<br />
<br />Dennis, A. S., R. A. Schl,=usener, J. H. Hirsch and A. Koscielski,
<br />1973: Meteorology of the Black Hills Flood of 1972. Rep. 73-
<br />4, Inst. Atmos. ScL, South Dakota School of Mines and Tech-
<br />nology, 41 pp.
<br />
<br />St. Arnand, P., R. J. Davi:~ andR. D. Elliott, 1972: Report on
<br />Rapid City flood of 9 June 1972. S. Dakota Weather Control
<br />Commission, Peirre, 37 pp.
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