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Basic Hydrology - Water Resources Board

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Introduction to <strong>Hydrology</strong><br />

OKLAHOMA STATE UNIVERSITY<br />

Biosystems and Agricultural Engineering Department<br />

<strong>Water</strong> Balance Equations<br />

• Primary conservation law in hydrology is mass<br />

balance:<br />

P + G<br />

in<br />

− ( Q + ET<br />

I<br />

+ G<br />

− Q<br />

out<br />

= ΔS<br />

) = ΔS

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