Because of its untouched mountainous landscape, several rivers,springs,falls, and freshwater lakes can be found in San Fernando. These include:
- Cresta de Gallo: A five-hectare kidney-shaped islet with verdant terrain sloping down to the powdery white sand beach and surrounded by beautiful corral reefs. The beach is rich with different species of marine life and an ideal place for swimming and scuba diving.
- Busay Falls: A scenic spot with a natural pool located some 2.5 kilometers from Poblacion at Barangay Panangcalan. The upper portion is the water reservoir serving the Poblacion.
- Cantingas River: The pride of Barangay Taclobo is a natural swimming pool with a crystal water. The river is odorless, tasteless, and ever-flowing cold where one could quench his thirst while swimming. It has a cottage with a conference hall.It was also awarded as cleaniest and greeniest river in the Philippines for the year 2003 and 2005.
- Lamao Lake: A seven-hectare natural lake in Barangay Azagra.
- Lagting Falls: This scenic hideaway with a basin-like natural pool is located in Barangay Taclobo, some 3 kilometers away from Poblacion. This falls is a refreshing place to immerse during this hot summer. It has two natural swimming pools with clean water and has several cottages available around the area
- Dagubdob Falls: A falls in Sitio Olango in Barangay Espana that is near in the mountain.
- Bila Bila Falls :A Beautiful Falls in Canjalon Named Bila Bila meaning Butterflies.