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I I I I I I I I I I I I I I I I I I I r:Jill.i77 4.5.1 Groundwater Profiles for Various Vertical Planes Figures 7a. b. and c below illustrate how the groundwater profile is changed after a 20 day recharge period at a constant recharge rate of 4 feet per day which corresponds to a value of 0.2314 cubic feet per second {CFSl The graphs correspond to vertical planes of O. 54, and 90 degrees. respectively. The positive distances are measured from the center of the basin towards the river. Groundwater Mound Vertical Plane at 0 degrees ~ 5 2.5 o ~ 2 . .. ~ 1.5 5 1 a "0 0.5 ~ 0 x .1500 -900 .300 300 900 1500 Distance from Center (ft) Figure 7a: Groundwater Mound at 0 deg. Groundwater Mound Vertical Plane at 54 degrees ~ 2.5 o o ~ 2 ~ ~ . ~ Figure 7b: Groundwater Mound at 54 deg. The groundwater profile for a vertical plane of 0 degrees reflects the influence of the recharge basin along its length. The mound stopped at approximately 900 feet from center which reflects the perpendicular distance to the Platte River. The groundwater profile for a vertical plane of 54 degrees resulted in a wider overall influence of the recharge water in both directions from the center of the basin. Additionally, the groundwater levels at a distance of 300 feet from the center of the basin showed an increase of 1 foot. For an initial depth-ta-water of 2.4 feet in the vicinity of the recharge basin, an increase of one foot would raise the groundwater level within the desired 1 to 1.5 feet of the ground surface. The groundwater profile for a vertical plane of 90 degrees showed similar results to the 54 degree profile and is illustrated in Figure 7c. t9