North Kansas City, Missouri Well Field CRA [43.2 kb]
The shape of the total CRA for the North Kansas City, Missouri well field is roughly circular and extends from the well field northwest towards the Missouri River. The length of the total CRA ranges from approximately 1 kilometer for the LPLR scenario to almost 1.5 kilometers in the two high river stage scenarios. The length of the total CRA is limited by the flow boundary of the Missouri River to the west and interference from an industrial well field to the southeast. Unlike the Missouri Cities Water Company and the Gladstone, Missouri well field CRAs that intersect ground water as it flows toward the Missouri River, the total CRA for the North Kansas City, Missouri well field is bounded on the upgradient edge by the Missouri River. Induced recharge from the Missouri River is shown by the location of the 1- and 5-year CRAs. The 1-year CRA is located next to and beneath the Missouri River for all pumping, river stage scenarios. However, during high pumping, the 1-year CRA is composed of two areas; one next to and beneath the river and another centered around the well field.
Simulated pumping rates for the North Kansas City, Missouri well field range from 9,884 m3/day for the low pumping scenarios to 16,476 m3/day for the high pumping scenarios. The total CRA ranged from 0.563 km2 for the LPLR scenario to 1.058 km2 for the QUASI scenario.
The total CRA for the North Kansas City, Missouri well field increased with higher pumping, decreased with lower pumping, increased during high river stage and decreased during low river stage. The 1-year CRA decreased with high river stage but increased with increased pumping. The 5-, 10-, and 100-year CRAs increased with high pumping and increased with high river stage. The behavior of the CRAs for this well field with respect to pumping is normal in that increased pumping increased the size of the CRA. As discussed earlier, well fields located close to a major river obtain a large part of their water from induced infiltration.The North Kansas City, Missouri well field is located far enough from the river so that increased pumping required a larger area of the aquifer for water supply rather than an increased rate of induced recharge from the Missouri River. As pumping rate increased, the rate of induced recharge from the river probably also increased but that alone was not enough to supply the well field.
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Updated: September 5, 2003
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