Comparing Flood Stage-Discharge Data—Be Careful!by Gary R. Dyhouse, US Army Corps of Engineers, Hydrologic Engineering Section, St., Louis, MO, USA,
Abstract: A long term stage-discharge record is extremely valuable data. However, simplified applications of long term records to draw sweeping conclusions about man's effects should be avoided, particularly for a major alluvial river like the Mississippi. Upward shifts of flood ratings are caused by man's works, yet many other factors affect the stages at which a given discharge passes. Different measurement techniques, man's modifications over the period of record, and the natural dynamics of the river all must be included in analyzing stage and discharge variations for different floods.
Subject Headings: Floods | Water discharge | Rivers and streams | Alluvial channels | Water discharge measurement | Dynamic analysis | Ratings | High-rise buildings | Mississippi
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