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EFFECTS OF DECREASING WATER DEPTHS ON THE SEDIMENTATION RATE OF ILLINOIS RIVER BOTTOMLAND LAKES 1
Author(s) -
Steffeck Donald W.,
Paveglio Fred L.,
Bellrose Frank C.,
Sparks Richard E.
Publication year - 1980
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1980.tb03912.x
Subject(s) - sedimentation , hydrology (agriculture) , sediment , linear regression , environmental science , regression analysis , linear relationship , standing crop , geology , mathematics , geomorphology , oceanography , statistics , geotechnical engineering , biomass (ecology)
The annual sedimentation rate of lakes and reservoirs is usually not evaluated for changes in depth relative to time. By using a linear regression with depth as the independent variable and annual rate of fill as the dependent variable the effect of changing depths is negated. According to both profile and linear regression analyses, Peoria Lake is filling faster in the more recent of two time spans but Lake Meredosia's increasing sedimentation rate is shown only by a linear regression. The probable cause for increasing sediment loads in the Illinois River is an almost twofold increase in row crop production in Illinois.