WSPC03939

• File Number: 8460.500
• Description: Platte River Basin - Endangered Species Issues - South Platte Recovery Program
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 12/5/1995
• Author: Matthew J Cook
• Title: South Platte Agreement - Groundwater Recharge as Augmentation for Restoring Wetlands Along the Central Platte River Nebraska - Final Report
• Water Supply Pro - Doc Type: Report/Study

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As the degree of the vertical plane is reduced at a constant distance of 300 feet
from the center of the basin, the height of the resulting groundwater mound
increased.

After interpreting the previous graphs, the effective radius of influence for
the recharge basin was approximately 300 feet. The effective radius was
determined as that distance from the center of the basin where the groundwater
table showed an increase in 1 foot.
4,5.3 Longtenm Effects of Groundwater Recharge
The recharge operation was completed after 20 days at a constant
recharge rate. The recession of the groundwater mound was calculated for a 15
day period following the completion of recharge. The recession in the
groundwater mound was again plotted for vertical planes of 0, 54, and 90. Each
groundwater mound was calculated for periods of 5, 10, and 15 days after
recharge was stopped and correspond to Figures 9a, b, and c, respectfully.

Recession of Groundwater Mound
VeftJeal Plane of 0 degrees

Recession of Groundwater Mound
Verncal Plane of 54 degrees

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JOG 12 15 &:vs
Distance From Center (1'1)

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-600 T~'VS
300 12 '5~ysYS
Distance From Center (1'1)

Figure 9a:Mound Recession;O deg. Plane

Figure 9b:Mound Recession;54 deg. Plane

Rpc,",ssoon of Groundw~er Mound
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Figure 9c: Mound recession; 90 degree Plane

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