Hello every one, I wish if you could help with this problem :(adsbygoogle = window.adsbygoogle || []).push({});

b]1. The problem statement, all variables and given/known data[/b]

Given the following informaiton for a paritculart watershed, determine the amount of the annual precipitaion recieved

2. Relevant equations

water shed area : 4530 m^2

average flowrate : 39.6 m^3/second

Average infiltration 9.2 * 10 ^ -7 m/s

Evapo-transpirtaiton : 45 cm/year

change is storage -23.9 cm/year

3. The attempt at a solution

I am sure that the formula to solve this is : change in storage = input - output + prec. - Evaportaion .

However, I have some doubts :

First, I assumed that the Evapo-transpirtaiton is the same as : Evaportaion so I am going to substitute it in the formula .

Second, which is the major :

The units - do we need to convert the units ?

My idea is to convert all cm to m but then when prec.is found : how to know if m/year

or m/s ?

Hope hearing replying soon =)

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# Homework Help: Immedaite Help Is required

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