Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022707 |
Groundwater Pumping Impacts on Real Stream Networks: Testing the Performance of Simple Management Tools | |
Zipper, Samuel C.1,2; Dallemagne, Tom1; Gleeson, Tom1; Boerman, Thomas C.1; Hartmann, Andreas3,4 | |
2018-08-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:8页码:5471-5486 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Germany; England |
英文摘要 | Quantifying reductions in streamflow due to groundwater pumping (streamflow depletion) is essential for conjunctive management of groundwater and surface water resources. Analytical models are widely used to estimate streamflow depletion but include potentially problematic assumptions such as simplified stream-aquifer geometry and rely on largely untested depletion apportionment equations to distribute depletion from a well among different stream reaches. Here, we use archetypal numerical models to evaluate the sensitivity of five depletion apportionment equations to stream networks with varying drainage densities, topographic relief, and groundwater recharge rates; and statistically evaluate the sources of error for each equation. We introduce a new depletion apportionment equation called web squared which considers stream network geometry, and find that it performs the best under most conditions tested. For all depletion apportionment equations, performance decreases with increases in drainage density, relief, or recharge rates, and all equations struggle to estimate depletion in short stream reaches. Poorly performing apportionment equations tend to underestimate streamflow depletion relative to numerical model results, leading to a negative bias and underpredicted variability, while error in the best performing apportionment equations tends to be due to imperfect correlation. From a management perspective, apportionment equations with error due to bias and variability are preferable as they correctly identify which reaches will be affected and can be statistically corrected. Overall, these results indicate that the web squared method introduced here, which explicitly considers stream geometry, performs the best over a range of real-world conditions, and will be most accurate in flatter and drier environments. Plain Language Summary Pumping groundwater for human uses such as irrigation can reduce flow in streams by intercepting water which otherwise would have eventually flowed into the river channel or causing water to flow out of the stream into the subsurface. This streamflow depletion reduces the water available to downstream users and ecosystems. Due to a lack of data and resources, relatively simple (analytical) groundwater models are often used to estimate pumping impacts, but they are based on unrealistic assumptions, such as straight streams. In this study, we introduce a new depletion apportionment equation used to estimate pumping impacts that considers the spatial configuration of real stream networks. By comparing it to more complex (numerical) groundwater models, we find that our new equation works better than existing equations under a variety of conditions. All of the depletion apportionment equations we test perform best in flatter, drier settings where streams are spaced further apart. Finally, we compare the causes of error among equations, which have different implications for water management decisions. Overall, our results show that stream geometry is an important factor to consider when making groundwater pumping decisions, and the new depletion apportionment equation introduced here is a useful tool for water managers. |
英文关键词 | groundwater-surface water interactions streamflow depletion groundwater pumping groundwater models depletion apportionment environmental flows |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445451800017 |
WOS关键词 | DEPENDENT ECOSYSTEMS ; CLIMATE-CHANGE ; SURFACE-WATER ; ENVIRONMENTAL FLOWS ; NEARBY STREAM ; DEPLETION ; MODEL ; WELLS ; ALLOCATION ; IRRIGATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20391 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Victoria, Dept Civil Engn, Victoria, BC, Canada; 2.McGill Univ, Dept Earth & Planetary Sci, Montreal, PQ, Canada; 3.Univ Freiburg, Inst Earth & Environm Sci, Freiburg, Germany; 4.Univ Bristol, Dept Civil Engn, Bristol, Avon, England |
推荐引用方式 GB/T 7714 | Zipper, Samuel C.,Dallemagne, Tom,Gleeson, Tom,et al. Groundwater Pumping Impacts on Real Stream Networks: Testing the Performance of Simple Management Tools[J]. WATER RESOURCES RESEARCH,2018,54(8):5471-5486. |
APA | Zipper, Samuel C.,Dallemagne, Tom,Gleeson, Tom,Boerman, Thomas C.,&Hartmann, Andreas.(2018).Groundwater Pumping Impacts on Real Stream Networks: Testing the Performance of Simple Management Tools.WATER RESOURCES RESEARCH,54(8),5471-5486. |
MLA | Zipper, Samuel C.,et al."Groundwater Pumping Impacts on Real Stream Networks: Testing the Performance of Simple Management Tools".WATER RESOURCES RESEARCH 54.8(2018):5471-5486. |
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