(A) Formula. Average ground slope is calculated using the formula:
S = l x L (100)
A
A
where:
S = Average slope (in percent)
l = Contour interval (in feet)
L = Total length of all contour lines on the parcel (in feet)
A = Lot area (in square feet)
Figure 112-7: Average Slope Calculation
![](https://export.amlegal.com/media/ba423118872f23a599948cf3b39d28a8431f06c6/IMAGES/0-0-0-7742.png)
(B) Contour intervals. Measurements along contours shall be made at contour intervals not to exceed ten feet, and a horizontal map scale of one-inch equals 200 feet or larger.
(Ord. 885-C.S., passed 5-21-19)