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I am not sure if I am asking it on a correct platform or not. A rainy river passes through my village. We suffer both in summer and in rainy seasons due to this. Could anyone explain how to recharge the ground water with river water. What would be the cost?

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    $\begingroup$ Divert the water into an artificial lake, which you empty in advance of rising waters, and from where you can take water in summer. Ground water however is practically only sourced from rain, and underground flows. Save it by keeping the ground covered by vegetation esp. in summer, and not pumping it up for agricultiural use. And yes, wrong platform here. $\endgroup$ – Karl Jul 29 at 21:36
  • $\begingroup$ So I want to ask the OP for clarification, but they don't actually have an account here as the question was migrated...... $\endgroup$ – Semidiurnal Simon Jul 30 at 19:41
  • $\begingroup$ @ThePowerHouse Hi. It looks like the chemistry mods migrated your question over here, where we talk about earth science. You say your village is in a climate with a rainy season (when the river floods) and a dry season (when the wells dry up). You can't really solve your problem by recharging the groundwater because a river is just where groundwater comes above the surface. But you can build a system to store groundwater during the rainy season to use in the dry season. Unfortunately, we don't have the expertise on this forum to recommend a solution or estimate a cost. $\endgroup$ – Spencer Jul 30 at 22:31
  • $\begingroup$ There is, however, a Sustainable Living Stack Exchange and a more general Engineering Stack Exchange where there might be people experienced in designing water storage solutions in a cost-effective way. $\endgroup$ – Spencer Jul 30 at 22:36
  • $\begingroup$ I have to disagree with Spencer, success of Managed Aquifer Recharge is far more about the hydrogeology that in the design of the water tub. In addition to the issues of sediment permeability, there are issues of insuring the water supply and minimising environmental effects of diverting water. And surely geological engineering shares earth science and engineering. $\endgroup$ – haresfur Jul 31 at 22:58
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What you are asking about is called "Managed Aquifer Recharge" It has been successfully employed in some situations but depends greatly on the geology of the area. The aquifer needs to be relatively shallow with permeable sediments between it and the surface. If the sediments are not permeable (e.g. clay rich or solid rock) The water won't flow down to the aquifer in a reasonable time.

As one comment pointed out the water can be diverted into an artificial lake to drain slowly into the sediments. It also may be possible to form a lake by placing a dam on the river.

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