Absolutely. However, UPSC asks conceptual questions (e.g., "Which river forms an estuary?"). Use the PDF for location – but supplement with a standard textbook like GC Leong for processes.
If you want a for study:
If you want a ready-to-use, error-checked version, consider creating a by downloading a blank outline map from NATMO and annotating with Khan Sir’s popular mnemonics – that will be both legal and effective.