Patent ID: 7107151

Claim:
A method of determining a depth to the saturated soil in the ground at a selected site comprising: a. identifying a first instance and a second instance wherein a depth of the water table equals a depth to the saturated soil at the selected site and the second instance occurs after the first instance; b. determining the depth of the water table at the first and second instances at the selected site; c. determining a total precipitation that occurred between the first and second instances at the selected site; d. calculating a rate of change of the depth to the saturated soil as a function of i. a specific yield value for the selected site, ii. an amount of time between the first and second instances, iii. the total precipitation that occurred between the first and second instances, and iv. the depth of the water table at the first and second instances; e. formulating an initial equation that models the depth to the saturated soils between the time period of the first and second instance; f. using the initial equation to calculate the depth to the saturated soil for a third instance; g. measuring the depth to the saturated soil for a third instance; h. determining the difference between the calculated and measured depth to saturated soil for the third instance; i. if the difference between the calculated and measured depth to saturated soil for the third instance exceeds a predetermined amount, formulating a new equation that models the measured depth to saturated soil for the third instance.