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<br />by contacting the Colorado Water Conservation Board, Denver, Colo- <br />rado. <br /> <br />GLOSSARY OF TER.'lS <br /> <br />F\IrtherStudy <br />Continuing study and review of the floodways and other <br />areal designations which may be defined in connection with flood <br />plain zoning are particularly important in maintaining a long-range <br />land-usa planning program. Community authorities should periodically <br />review and adjust the provisions governing the use of flood plain <br />lands whenever new information indicates a change in their flood <br />potential. <br /> <br />Flood. An overflow Of lands not normally covered by water, that are <br />used.Or usable by man. Floods have two essential characteristics: <br />the inundation of land is temporary, and the land is adjacent to snd <br />inundated by overflow from a river or stro~, or an ocean, lake, or <br />other body of standing water. <br />Normally, a "flood" is considered as any te"'porary rise <br />in streamflow or stage, but not the ponding of surface water, that <br />results in significant adveree effects in the Vicinity. Adverse <br />effeots may include damages from overflow of land areas, temporary <br />baokwater effeots in sewers and local drainage channels, oreation <br />of unsanitary conditions or other unfavorable situations by deposi- <br />tion of materials in stream channels during flood recessions, rise <br />of ground water coinCident with increased streamflow, and other <br />problems. <br /> <br />Flood Crest. The maximum stage or elevation reaohed by the waters <br />of a flood at a given location. <br /> <br />Flood Peak. The maximum instantaneous discharge of a flood. at a <br />given location. It usually occurs at or near the time of thc <br />floodcr"st. <br /> <br />Flood Plain. The relatively flat area Or lowlands adjoining the <br />channel of a river, stream or watercourse, or ocean, lake, or <br />other body of standing water, which has been or may be covered by <br />floodwater. <br /> <br />Flood profile. A graph showinq the relationship of water surface <br /> <br />e!evaticn to lcc~ticn, t~e latter scncrally expreeecd ac dictanec <br /> <br />above !:IOuth for a stre",," of water flowing in an open char.nel. It <br />isgcnerallydrawntoshowsurf",ceelevationfortilecrestofa <br />specific flood, but :oay be prepared for conditions at a given time <br /> <br />or stag",. <br /> <br />55 56 <br />