C.T. Jenkins
1968
<p>Electric<span>‐</span>analog<span> or </span>digital<span>‐</span>computer<span> models are used to compute the effect of ground‐water withdrawal or recharge on streamflow. The results can be generalized on a map showing lines of equal elapsed time. The lines indicate the time of recharging or discharging that is needed to affect the streamflow by a given fraction of the amount pumped or injected. The generalization is based on the similarity in shape of the relations between pumping time and </span>stream<span> </span>depletion<span> for (1) semi‐infinite homogeneous aquifers drained by a straight, fully penetrating </span>stream<span>, and (2) complex heterogeneous aquifers. Response curves from a </span>model<span> reflect the combined effect of </span>stream<span> sinuosity, irregular impermeable boundaries, areal variation in aquifer properties, and imperfect hydraulic connection between the </span>stream<span> and aquifer. The elapsed‐cime lines are identified by sdf (</span>stream<span> </span>depletion<span> factor) values. These values can be calculated from observations made on an </span>electric<span>‐</span>analog<span> </span>model<span> and then may be used in a </span>digital<span>‐</span>computer<span> program for determining the effects of ground‐water pumping or recharge on streamflow.</span></p>
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10.1111/j.1745-6584.1968.tb01258.x
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NGWA The Groundwater Association
Electric‐analog and digital‐computer model analysis of stream depletion by wells
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