$3-8)$ Draw a swale with a $3\text{'}$ deep retention pond.

a$)$ Swale should have a minimum slope of $4\%$ and a maximum slope of $5xkx,10\%$ slope

b$)$ Bottom of the retention pond should be $323$ and the sides should have a maximum slope of $$1\mathrm{.}10\%$ slope

c$)$ Label all parts of the pond and swale.