Dear Akshay ,

As per your GATE score and based on the past year GATE cut off database , you have good chances to get the following colleges with the following specializations :

• National Institute of Technology Warangal- Waste Management(396)
• Malaviya National Institute of Technology Jaipur- Water Resource Engineering(386)
• Sardar Vallabhbhai National Institute of Technology Surat- Water Resource Engineering(357)
• National Institute of Technology Rourkela-Water Resource Engineering(382) and others

Well, you have to remember , every year the cut off can change due to the following categories :

• Seat matrix
• Difficulty level of exam
• No of students appeared for the exam

You can check the GATE  cut off from here too :

https://engineering.careers360.com/articles/gate-cutoff

To know your chances to get colleges through your score, use this  GATE college predictor  :

https://engineering.careers360.com/gate-college-predictor?icn=QnA&ici=qna_answer

Hope this helps !