Hi!

Yes, pursuing PhD itself makes you eligible to become an assistant professor and as your research is in water resource engineering and management which comes under environmental science, so you can appear for the interview. There are some guidelines to follow:

• Guidelines-for-screening-and-shortlisting.pdf at http:/jdm.du.ac.in
• 1507201_Qualifications.pdf at http:/du.ac.in

I hope you find it helpful