The Problem What to do Rules Resources References Glossary

Your answer to Question 2 is correct.

Clicking on the Calculator button launches a pop-up data entry window. The upper part of the calculator is used to estimate the average groundwater flow velocity.  Enter values of hydraulic gradient, aquifer hydraulic conductivity and porosity to make the calculation. 

An initial estimate of aquifer hydraulic conductivity has been provided by the state geological survey and can be found under the Resources tab in the Data Repository. Enter this average value as a percent in the box provided.  

Complete the following example using the Calculator to estimate the minimum and maximum distances of plume travel. A values of 30% has been entered for aquifer prorosity. Shown below the map of the Buffalo River valley in Map View, best estimate of the hydraulic gradient is 0.0017 feet per foot.  From the Data Repository the estimated hydraulic conductivity is 250 feet/day. Consider these as average values that you will use to intially estimate the average ground-water flow velocity for the siting of your first monitoring well.  Enter the appropriate values from the Data Repository into the Calculator boxes and click on the Calculate button. The result is an average ground-water flow velocity of 1.417 feet per day.

 

 

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