Laserfiche WebLink
August 1994 -8- 933-2713.003 <br /> rather have significant fine-grained matrix material. The fine-grained matrix of the gravels <br /> significantly impedes the rate of groundwater flow within Cement Creek. <br /> The permeability contrast between the sandy gravel zone and the underlying clayey gravels is <br /> such that the clayey gravel is likely to act as an aquitard. The majority of groundwater flow is <br /> expected to be within the sandy gravel unit. <br /> 5.0 CONJUNCTIVE FLOW <br /> Conjunctive flow characterization involves determining the volume of surface water passing a <br /> given point during a specified period of time, as well as determining the concurrent volume of <br /> groundwater within the creek sediments passing the same point. Surface water flow <br /> determinations are relatively straight forward. Groundwater flows determinations are somewhat <br /> more complicated, as described below. <br /> 5.1 Groundwater flow <br /> Groundwater movement within the creek sediments was calculated by: <br /> ► Determining the thickness of the creek sediments which appreciably contribute to <br /> groundwater flow; <br /> ► Determining the groundwater table elevation at various points; <br /> ► Determining a representative hydraulic conductivity of the creek sediments; <br /> ► Determining a representative hydraulic gradient through the creek sediments; and, <br /> ► Utilizing the data obtained above to calculate groundwater flow using Darcy's <br /> Law: <br /> Golder Associates <br />