Missouri
Cities Water Company CRA [31783kb]
The shape of the simulated CRA for the Missouri Cities Water Company well field is roughly triangular for all river stage - pumping scenarios and was affected by the well field's proximity to both the Missouri River and the alluvial valley walls. Recharge to the well field was partially induced from the Missouri River by well pumping and is shown by the location of the 1- and 5-year CRAs below and next to the river. The Missouri River formed the eastern boundary of the CRA which extends west along the alluvial valley wall and away from the river for approximately 4 kilometers for all river stage - pumping scenarios. The capture of ground-water by the pumping wells as it moved down-gradient toward the Missouri River caused the long up-valley extent of the CRA. The 1-year CRA is located between the Missouri River and the south of the well field because of the short distance ground-water travelled from the bottom of the river bed in layer 2 of the model to the screened interval of the wells in layer 3 of the model. The 5- and 10-year CRAs are centered around the well field but are skewed toward the west away from the river.
Simulated pumping rates for the Missouri Cities Water Company well field ranged from 5,180 m3/day for the QUASI scenario to 9,228 m3/day for the high pumping rate scenarios. The size of the total CRA ranged from 2.611 km2 for the HPHR scenario to 5.469 km2 for the LPHR scenario.
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Contact address:
Brian P. Kelly, Hydrologist
U.S. Geological Survey
401 NW Capital Drive
Lee's Summit, MO 64086
PHONE: 816-554-2414
FAX: 816-554-9273
EMAIL: bkelly@usgs.gov
U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Rita Choate, Webmaster
Updated: September 4, 2003
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URL: http://missouri.usgs.gov/indep/kelly/mo-alluvial-gw/cra/mocty.htm