The Trinity Western University Ecosystem Study Area (ESA) is an area dedicated to the study, preservation, and proper management of the environment. It is a valuable area of diverse and sensitive habitat, containing part of the Salmon River and some tributaries. Because the Salmon River is a key salmon-producing river in the Lower Mainland, it is essential that we manage it appropriately for these pollution-sensitive fish. Additionally, numerous other species have been catalogued in the ESA and the surrounding area, several of which are rare or endangered.