MScR in Water Resource Engineering - admission essay for Oxford

I am writing to you from Pakistan.I am applying for the Rhodes scholarship program.I have done my bachelors in Civil Engineering and want to pursue my Masters in it from Oxford.In the application form it is indicated that while drafting the Admission Essay ,one has to mention about the course to follow and the character of work which i intend to pursue.I want to go for my MScR in Water Resource Engineering.But the problem is that i don't know how should i start it.Can anybody please help me in this regard,the deadline for applications is nearing.I have drafted the rest of the letter but i am stuck on this part!

Start by deciding what course you plan on following, and what sort of work you intend to do during and after your degree. What do you plan to research during your degree? Why? What you do you plan to do with your degree? Why? Then write up your answers concisely and interestingly, and post them here for more detailed feedback.

Thanks Sean,it really helped me drafting the last part.

Regards

Hyat