Quantification and Regionalization of the Interaction between the Doumen Reservoir and Regional Groundwater in the Urban Plains of Northwest China

Abstract

Groundwater and artificial reservoirs are in a continuous dynamic interaction that can affect not only water quantity but the quality. In this paper, taking the DR (Doumen Reservoir) as an example, the level dynamic changes between the DRTS (Doumen Reservoir Test Section) and groundwater were discussed, and the water quality used by SFE (single-factor evaluation) and WQI (water quality index) method were analyzed. A coupling model is presented to quantify the leakage impact range and groundwater budget and regionalize the impact of surface water on regional groundwater quality. The results show that the level dynamics of the reservoir and groundwater are highly consistent, with a cross-correlation coefficient of 0.85 and a lag time of about 7 days. The reservoir recharges the groundwater with an increase-decrease-stationary wave dynamic potential. After 3 years of operation of the DR, the groundwater still is recharged, the groundwater level will rise obviously, with a maximum of 8.5 m. The amount of surface water recharged is always 0. NH3-N, and COD will have varying degrees of impact, both of which are mainly the pollution halo around North Lake. The results can provide support for water resources management and environmental protection of urban plain reservoirs.

Impounding Reservoirs, Benefits and Risks: A Review of Environmental and Technical Aspects of Construction and Operation

“…The main conclusion of this review is that priority should be given to implementing sustainable planning and technological solutions to build facilities whose social benefits will largely outweigh any environmental losses. These should be subject to the most effective possible compensation [69][70][71][72][73][74][75][76][77][78][79][80][81][82][83]. The need for ex ante impact assessments is emphasised, but also for studies to be repeated after a longer period of reservoir operation [69].…”

“…The provision of a fish ladder with optimal parameters may allow for the sustainability and diversity of the ichthyological fauna, which, however, requires studies carried out on the native fish species of the region [80]. Due to the different geological characteristics of the various dam reservoir locations, each project requires an individual approach to the issue of groundwater impact [81][82][83]. Due to the nature of lowland urban areas, the damming of water in the reservoir results in a general and long-term increase in local groundwater levels and its significant correlation with fluctuations in the level of dammed water [81].…”

Spatio‐temporal patterns and quantification of lake–groundwater interaction determined in a large water transfer lake

“…The water transfer lakes are important parts of the water transfer projects (Chen et al, 2020; Everard et al, 2018). The water transfer projects restructure the natural lake for water storage and transfer, causing certain changes in lake and groundwater (Wang et al, 2021; Wang & Ma, 1999; Wine et al, 2019; Yang et al, 2017b; Yuan et al, 2020; Zhang et al, 2018). It is estimated that approximately 25% of global water withdrawal is provided through water transfer projects by 2025 (Gohari et al, 2013), and a number of water transfer lakes will be constructed (NSBD, n.d.).…”

“…Previous study on lake–groundwater exchange involved various types of lakes, including desert lakes (Cao et al, 2022; Yang et al, 2017a), salt water lakes (Luo et al, 2016), thermokarst lake (Wan et al, 2019), tundra lakes (Dabrowski et al, 2020), small shallow lakes (Yang et al, 2020), large lakes (Sun et al, 2022) and reservoirs (Wang et al, 2021). However, there have been few studies about the groundwater of water transfer lakes.…”

“…The water transfer lakes are important parts of the water transfer projects (Chen et al, 2020;Everard et al, 2018). The water transfer projects restructure the natural lake for water storage and transfer, causing certain changes in lake and groundwater (Wang et al, 2021;Wang & Ma, 1999;Wine et al, 2019;Yang et al, 2017b;Yuan et al, 2020;Zhang et al, 2018).…”