Laserfiche WebLink
<br />performed the translation and run function to complete modeling with the new <br />reservoir in the model. The model converged and our output data was analyzed. The <br />estimated groundwater elevation contours after construction of the new reservoir are <br />presented on Figure 4. <br />The groundwater elevation data from the model before reservoir construction <br />was compared with the groundwater elevation data from the model after reservoir <br />construction to determine the estimated change in groundwater elevation after <br />reservoir construction. This comparison is presented on Figure 5 and shows <br />"mounding" of ground water south of the Reservoir complex up to about 8 feet and <br />very little "depressing" of ground water north of the Reservoir complex. <br />PRESENTATION OF EFFECT OF RESERVOIR NO.2 ON GROUNDWATER <br />This study shows no effect on the ground water further south of the complex <br />than about 800 feet (Figure 5). The estimated rise in the groundwater elevation below <br />• the Swartz Residence located about 300 feet south of the reservoir complex is about 8 <br />feet at the groundwater conditions prevailing at the time of the field work for this <br />study. This rise in groundwater elevation would result in a decrease in the depth to <br />ground water from the ground surface at the Swartz Residence from about 22 feet to <br />16 feet or an estimated rise to about 6 feet below the basement floor. The estimated <br />depth to ground water before construction of the new reservoir is shown on Figure 7. <br />CTl- I T imported the output data from the model into AutoCAD to compare <br />with input data and existing groundwater conditions. CTL I T overlaid the contours of <br />groundwater elevations before construction of the new reservoir onto the contours of <br />groundwater elevations after construction of the new reservoir. This imposition of <br />groundwater contours is shown on Figure 5. <br />RECOMMENDATIONS <br />CTIL T recommends the City place a drain (see Figure A-1 and Appendix A) <br />along the south side of the new reservoir to reduce the groundwater rise resulting <br />• from the construction of the Reservoir No. 2 to little or nothing. The drain would <br />McLAUGHLIN WATER ENGINEERS, LTD. 12 <br />GOOSE HAVEN RESERVOIR COMPLEX EXPANSION <br />CTL I T PROJECT NO. FC04797.002-145