ABSTRACT The temporal dynamics of groundwater–surface water interaction under the impacts of various water abstraction scenarios are presented for hydraulic fracturing in a shale gas and oil play area (23 984.9 km2), Alberta, Canada, using the MIKE-SHE and MIKE-11 models. Water-use data for hydraulic fracturing were obtained for 433 wells drilled in the study area in 2013 and 2014. Modelling results indicate that water abstraction for hydraulic fracturing has very small (<0.35%) negative impacts on mean monthly and annual river and groundwater levels and stream and groundwater flows in the study area, and small (1–4.17%) negative impacts on environmental flows near the water abstraction location during low-flow periods. The impacts on environmental flow depend on the amount of water abstraction and the daily flow over time at a specific river cross-section. The results also indicate a very small (<0.35%) positive impact on mean monthly and annual groundwater contributions to streamflow because of the large study area. The results provide useful information for planning long-term seasonal and annual water abstractions from the river and groundwater for hydraulic fracturing in a large study area.

中文翻译：

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水力压裂取水对地下水-地表水相互作用影响的数值模拟：加拿大艾伯塔省西北部的案例研究

摘要 使用 MIKE-SHE 和 MIKE-11 在加拿大艾伯塔省的页岩气和石油开采区（23 984.9 平方公里）进行水力压裂，展示了在各种取水情景影响下地下水-地表水相互作用的时间动态。楷模。2013 年和 2014 年在研究区钻探的 433 口井获得了水力压裂用水数据。建模结果表明，水力压裂取水对平均月和年河流和地下水位的负面影响非常小（<0.35%）以及研究区的河流和地下水流量，在低流量时期对取水地点附近环境流量的负面影响很小（1-4.17%）。对环境流量的影响取决于取水量和特定河流横截面随时间推移的日流量。结果还表明，由于研究面积大，对平均每月和每年地下水对河流流量的贡献的积极影响非常小（<0.35%）。结果为规划从河流和地下水中抽取用于大型研究区域的水力压裂的长期季节性和年度取水提供了有用的信息。