The North Etiwanda Preserve was established as a habitat preservation area on February 10, 1998, when the San Bernardino County Board of Supervisors accepted mitigation land from San Bernardino Associated Governments (SANBAG) for impacts related to construction of the 210 Freeway. The initial 762 acres acquired for the North Etiwanda Preserve consisted primarily of a unique Riversidean Alluvial Fan Sage Scrub plant community and was purchased by SANBAG to be preserved as natural habitat for impacts to the Costal California Gnatcatcher and similar habitat consumed by the development of the freeway. Ongoing conservation efforts have enabled expansion of the Preserve to over 1200 acres.
