Rangat is shaped by its coastal and tidal geography.
* **Andaman Sea:** The town lies on the eastern coast of Middle Andaman Island, directly facing the Andaman Sea, providing the primary source of fishing and coastal trade. * **Tidal Creeks:** The region is heavily intersected by brackish tidal creeks, which support dense mangrove ecosystems like those at Yerrata and Dhani Nallah. * **Freshwater:** Small freshwater streams originate in the hilly interior of the island, including the cascade found at Panchavati.
