The reservoir was created by damming the original Peirce Reservoir to increase Singapore's water storage capacity.
It is part of a chain of four reservoirs located within the Central Catchment area.
The park is home to long-tailed macaques that are frequently observed along the roadside and perimeter fences.
The area serves as a critical buffer zone for the biodiversity-rich forests of the Central Catchment Nature Reserve.
The reservoir water level is strictly managed by the Public Utilities Board for municipal water supply.
Upper Peirce Reservoir Park is a tranquil reservoir-side park that serves as the secondary catchment area for Singapore's water supply. The park offers panoramic views of the water body and is surrounded by secondary rainforests that connect to the Central Catchment Nature Reserve. It features a prominent dam and a spillway that functions during periods of heavy rainfall. The terrain is characterized by rolling hills and provides a habitat for diverse wildlife, including macaques and various bird species. Visitors primarily utilize the park for walking, cycling along the quiet adjacent roads, and picnicking. The site is known for its relatively remote and undisturbed atmosphere compared to other major urban parks in the city. The infrastructure is minimal, focusing on grass lawns and viewing points rather than built amenities.
The crest of the dam overlooking the reservoir during golden hour.
Bring sufficient water and insect repellent, as there are no food or drink kiosks on-site.
Keep all food items hidden in bags to avoid attracting macaques.
Use the grass areas for picnics, but ensure all trash is carried out to maintain the park's cleanliness.
Feeding the monkeys, which is illegal and encourages aggressive behavior; walking off-path into the dense forest.
Maintain a respectful distance from wildlife; do not feed macaques; keep noise levels low to avoid disturbing local fauna.
