Reducing Groundwater Pumping Cost Using Alternate Pulsed Pumping

Area of Science:

• Hydrogeology
• Water Resource Management

Background:

• Confined aquifers are crucial water sources, often managed by multiple users.
• Simultaneous pumping from nearby wells can lead to increased hydraulic drawdowns and operational costs.

Purpose of the Study:

• To propose and evaluate an alternate pulsed pumping schedule for water wells.
• To minimize water pumping costs and reduce hydraulic drawdowns in confined aquifers.

Main Methods:

• Analytical comparison of simultaneous versus alternate pumping schedules for two wells.
• Transient flow analysis using the Theis equation.
• Development of simplified equations for drawdown differences and economic benefits.

Main Results:

• Alternate pumping acts as a stabilizer, significantly reducing hydraulic drawdowns.
• Pumping alternately is more cost-effective than simultaneous pumping, with benefits decreasing as well distance increases.
• Developed equations accurately predict drawdown differences and economic benefits.

Conclusions:

• An alternate pulsed pumping schedule is an effective strategy for water pumping cost minimization.
• Cooperative pumping strategies can yield substantial economic benefits for well users.
• Findings are applicable to irrigation scheduling and farmer cooperation systems.