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# CE-235 EH Lec 1

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• assalamualaikum
i am Thailand
Thak u Brother

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• I think that change in storage will be 200ha-cm.

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• wa alikum salam dear brother.
The sequence of the solution is as follows.
but I think that you should verify the data again.

Area=600*1000 %1hec=1000 sq m
Time=24*30*24*60*60 %in seconds taking 30 days per month
Rain_fall=100 %cm or hec-cm
I_O=5-4.5 %cubic meter per second
I_O=0.5*Time %in cubic meter
I_O=(0.5*Time)*100/(600*10000) %in hec-cm
deltaS=200 %in hec-cm
Loss=(I_O)+Rain_fall-deltaS %in hec-cm

for hec-m
divide the loss by 100

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• Hello Salaam Alaykum
Could you help me solving this calculation,I am a bit confused because I have little back ground o hydrology:
A 600 ha reservoir receives 100 cm of rainfall during 24 months. During this time, the mean inflow to the reservoir is 5 cumec and mean outflow from reservoir is 4.5 cumec, and an increase in storage is 200 ha-m. Compute Evapotraspiration loss in ha-m as well in cm.

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### CE-235 EH Lec 1

2. 2. Engineering Hydrology(CE- 235)<br />CHAPTER - I<br />2<br />INTRODUCTION<br /><ul><li>NUST Institute of Civil Engineering/Engr Sajjad Ahmad</li></li></ul><li>HYDROLOGY<br /> Hydrology is the science of the waters of the earth and atmosphere.<br /> It deals with <br /><ul><li>Occurrence
3. 3. Circulation
4. 4. Distribution and
5. 5. Movements of these waters over the globe</li></ul>3<br />Engineering Hydrology(CE- 235)<br /><ul><li>NUST Institute of Civil Engineering/Engr Sajjad Ahmad</li></li></ul><li>ENGINEERING HYDROLOGY<br /> Engineering Hydrology deals with:-<br /><ul><li>Estimation and analysis of water resources
6. 6. The study of processes such as precipitation, runoff, evapotranspiration