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<br /> <br />. <br /> <br />. <br /> <br /> <br />. <br /> <br />()'"'2236 <br /> <br />Moore and' Wood - <br />Oral - GSA <br /> <br />CONSTRUCTION OF ANALOG MODEL <br /> <br />Figure 7.--Transmissibility map of part of the valley. <br /> <br />On this map is shown the basic framework of the model <br /> <br />for the l2-mile reach--the transmissibility and boundaries <br /> <br />of the hydrologic system (the Arkansas River, and the <br /> <br />'bedrock and valley-fill contact). The transmissibility is <br /> <br />estimated from pumping tests, well logs, saturated-thickness <br /> <br />map and water-table-contour map. In this part of the valley, <br /> <br />transmissibility ranges from less than 50,000 to about 200,000 <br /> <br />gallons per day per foot. The variation is caused by <br /> <br />differences in saturated thickness or in permeability. The <br /> <br />specific yield, determined from pumping tests and neutron- <br /> <br />mois'ture data, is about 0.2. <br /> <br />Figure B.--Photograph of analog model. <br /> <br />The model, simulating the l50-mile reach of the <br /> <br />Arkansas Valley, has a resistor spacing of 8 per mile and <br /> <br />has about 100,000 resistors. <br /> <br /> <br />F <br />, <br />