Any coastal engineering or hydraulics phd graduate student here?

<p>Hi,</p>

<p>I'm studying masters degree in coastal science and engineering. After I complete my masters degree, I want to get Phd. Could anyone help me to choose the best school in hydraulics or coastal engineering?
And What are the requirements to get into these schools?
Meanwhile, Im thinking of Oregon State, University of Texas A&M, University of California Davis</p>