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Groundwater Availability as Constrained by Hydrogeology and Environmental Flows

机译：受水文地质和环境流量限制的地下水可用性

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摘要

Groundwater pumping from aquifers in hydraulic connection with nearby streams has the potential to cause adverse impacts by decreasing flows to levels below those necessary to maintain aquatic ecosystems. The recent passage of the Great Lakes-St. Lawrence River Basin Water Resources Compact has brought attention to this issue in the Great Lakes region. In particular, the legislation requires the Great Lakes states to enact measures for limiting water withdrawals that can cause adverse ecosystem impacts. This study explores how both hydrogeologic and environmental flow limitations may constrain groundwater availability in the Great Lakes Basin. A methodology for calculating maximum allowable pumping rates is presented. Groundwater availability across the basin may be constrained by a combination of hydrogeologic yield and environmental flow limitations varying over both local and regional scales. The results are sensitive to factors such as pumping time, regional and local hydrogeology, streambed conductance, and streamflow depletion limits. Understanding how these restrictions constrain groundwater usage and which hydrogeologic characteristics and spatial variables have the most influence on potential streamflow depletions has important water resources policy and management implications.
机译：与附近溪流水力连接的含水层中抽取的地下水有可能通过将水流降至维持水生生态系统所需的水位以下而造成不利影响。大湖区-圣劳伦斯河流域水资源契约在大湖区引起了人们的关注。尤其是，该立法要求五大湖州制定措施以限制可能对生态系统造成不利影响的取水量。这项研究探索了水文地质和环境流量限制如何限制大湖盆地的地下水可利用性。提出了一种计算最大允许抽速的方法。流域内地下水的可利用性可能受到水文地质产量和环境流量限制的组合的制约，而局部和区域范围内的变化都很大。该结果对诸如抽水时间，区域和当地水文地质，河床电导和河水流耗极限等因素敏感。了解这些限制如何约束地下水的使用以及哪些水文地质特征和空间变量对潜在的水流枯竭有最大的影响，对水资源政策和管理具有重要意义。

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  • 来源
    《Ground water》 |2014年第2期|225-238|共14页
  • 作者

    Katelyn A. Watson; Alex S. Mayer; Howard W. Reeves;

  • 作者单位

    Department of Geosciences, Boise State University, Boise, ID 83725;

    Department of Civil Et Environmental Engineering, Michigan Technological University, Houghton, MI 49931;

    USGS Michigan Water Science Center, Lansing, MI 48911;

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