Las Tres Haciendas Waterworks

Sistema de riego de las tres haciendas
LocationSanta Isabel, Puerto Rico
Coordinates17°58′47″N 66°23′23″W / 17.97972°N 66.38972°W / 17.97972; -66.38972 (Sistema de riego de las tres haciendas)
Built1846
NRHP reference No.16000853
Added to NRHPDecember 13, 2016

Las Tres Haciendas Waterworks (Spanish: Sistema de riego de las tres haciendas) is an irrigation system located in Santa Isabel, Puerto Rico. It consists of a set of structures that were built between 1846 and 1886 by landowners to transport water from the Coamo River to the fields of their sugarcane plantations. Las Tres Haciendas (Spanish for 'the three homesteads') is named refers to the three sugarcane haciendas it serves: El Destino, Florida, and Hacienda Santa Isabel.

The waterworks historic district covers an area that spreads through the Santa Isabel barrios of Boca Velázquez, Jauca II, Felicia II, Felicia I, and Santa Isabel Pueblo.