AGET $220$ NRCS Method Homework

$1.$ For Weakley County, determine the peak runoff rate for a $25-$year return period storm for a $50$ acre watershed in permanent woodland, with good soil $($group C$).$ The slope is $6\backslash \%$ and the maximum length of flow is $5000$ ft $.$

$2.$ Calculate the peak runoff rate for a $125-$acre watershed which has a maximum length of flow of $3,000$ feet and an average slope of $\backslash (2\backslash \%\backslash ).$ The watershed is comprised of $50$ acres of pasture and $75$ acres of woodland. The soil type for the pasture is a fair condition, open sandy loam $($group B$),$ and for the woodland it is a poor condition, clay and silt loam $($group C$).$ The return period for the design is $10$ years. The field is located in Martin, Tennessee. Be sure to use a weighted CN $.$

$3.$ A $25$ acre watershed has a group $\backslash ($ B $\backslash )$ soil and is all in pasture with good soil condition. For a $5$ year return period in Mobile, Alabama, determine the runoff volume in ac$-$ft$.$

$4.$ What is the runoff volume in the previous problem in cubic feet?

$5.$ Given the attached figure, determine the peak runoff rate at point $\backslash ($ B $\backslash )$ of the watershed. The elevation of B is $91\mathrm{.}0$ feet and the distance from B to C is $1200$ feet. The watershed contains $30$ acres of pasture, poor condition, group C and $40$ acres of rough land covered in brush, poor condition, group B soil. The field is located in Mobile, AL$.$ Assume a return period of $10$ years. $($Hint: you will have to find the slope using the information given.$)$