Analysis of Human Interferences to Hydrologic Alterations on the Illinois River
The Illinois River is a tributary of the Mississippi River that connects Lake Michigan and the Mississippi River.Starting in 1848 when the Dlinois and Michigan Canal began to openthe Illinois River has experienced some major human interferences such as the Lake Michigan flow diversioncreation of levee and drainage districts on floodplainsand construction of locks and dams on the river. Observed stage data from 12 U.S. Army Corps of Engineers gages and observed flows from 3 U.S. Geological Survey gages were used to analyze the effects of human interferences on alterations of hydrologic conditions on the illinois River.Based on the Pettitt-Mann-Whitney change-point statistics analysis 1938 and 1972 were identified as the change points for low and high flow and stage conditions, respectively. The low and stage condition changes were due to a combination of flow diversionlevee and drainage district construction and construction of locks and dams, whereas the high flow and stage condition changes were due to hydroclimatic change within the Illinois River basin. The Indicators of Hydrologic Alterations (IHA) program was used to quantify hydrologic alterations before and after change points in 1972,respectively. Parameters that have significance to the ecological conditions on the river were analyzed.
Human Activity Illinois River Hydrologic Alteration Change Point Analysis
Yanqing Lian Jiing-Yun You Misganaw Demissie
Professional Scientist,Illinois State Water Survey,Institute of Natural Resource Sustainability,Univ Dept.of Civil Engineering National Taiwan University,No.1,Sec.4,Roosevelt Road,Taipei,Taiwan Illinois State Water Survey Institute of Natural Resource Sustainability University of Illinois at U
国际会议
International Forum on Water Resources and Sustainable Development(2009水资源与可持续发展高层论坛)
武汉
英文
148-160
2009-09-22（万方平台首次上网日期，不代表论文的发表时间）