Watershed area = 11.1 acres Average N concentration of inflow = 1.9 mg/L Total Rainfall = 44.75 inches Average N concentration of outflow = 1.4 mg/LTotal pond inflow = 330,441 ft3 Average P concentration of inflow = 0.42 mg/LTotal pond outflow = 288,492 ft3 Average P concentration of outflow = 0.23 mg/LTotal pond volume = 46,893 ft3 (this is the volume to the top of the riser before overflow occurs) Answer the following questions:a) What percentage of the total rainflow flowed into the pond?b) If the pond were completely empty, how much rainfall in inches would be required to fill it to the total pond volume? Use your answer to question A to help answer this.c) What is the total Nitrogen load flowing into the pond in lbs/Acre/Year?d) How many lbs of Nitrogen did the pond remove over the year?e) What percentage of Phosphorous was removed by the pond?

Answered: Image /qna-images/answer/a7d2bf4d-6d40-45b1-a93c-2478e21f0bf8.jpg

Answered: Watershed area = 11.1 acres…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Watershed area = 11.1 acres Average N concentration of inflow = 1.9 mg/L

Total Rainfall = 44.75 inches Average N concentration of outflow = 1.4 mg/L

Total pond inflow = 330,441 ft³ Average P concentration of inflow = 0.42 mg/L

Total pond outflow = 288,492 ft³ Average P concentration of outflow = 0.23 mg/L

Total pond volume = 46,893 ft³(this is the volume to the top of the riser before overflow occurs)

Answer the following questions:

a) What percentage of the total rainflow flowed into the pond?
b) If the pond were completely empty, how much rainfall in inches would be required to fill it to the total pond volume? Use your answer to question A to help answer this.
c) What is the total Nitrogen load flowing into the pond in lbs/Acre/Year?
d) How many lbs of Nitrogen did the pond remove over the year?
e) What percentage of Phosphorous was removed by the pond?

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