Role of Multiple High-Capacity Irrigation Wells on a Surficial Sand and Gravel Aquifer
Role of Multiple High-Capacity Irrigation Wells on a Surficial Sand and Gravel Aquifer作者机构：Braun Intertec Corporation Minneapolis MN USA Department Geography-Geology Illinois State University Normal IL USA Illinois State Geological Survey Champaign IL USA
出 版 物：《Journal of Geoscience and Environment Protection》 (地球科学和环境保护期刊（英文）)
年 卷 期：2016年第4卷第5期
页 面：43-53页
学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
主 题：Bedrock Valley Glacial Sediments Numerical Modeling Agriculture Groundwater Management
摘 要：Within McHenry County, IL, the fastest growing county in Illinois, groundwater is used for 100% of the water needs. Concerns over water resources have prompted the investigation of the surficial sand and gravel aquifers of the county. While the eastern portion of the county is urbanizing, the western portion remains devoted to agriculture. High-capacity irrigation wells screened within the surficial sand and gravel aquifer are used for crop production. To assess the impacts of the irrigation wells on the aquifer, a groundwater flow model was developed to examine five different scenarios reflecting drought conditions and increased pumping. Results show that the surficial sand and gravel aquifer is capable of meeting current water demands even if recharge is decreased 20% and pumping is increased 20%. The additional loss of discharge and increases in pumping result in head differences throughout the aquifer.
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