Established in 1999, the San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy's mission is to acquire and manage public lands to provide open space, low-impact recreational uses, educational uses, water conservation and watershed improvement, wildlife and habitat restoration and protection, and preserve the San Gabriel Mountains and the San Gabriel and Lower Los Angeles Rivers, and their tributaries, consistent with existing and adopted river and flood control projects for the protection of life and property.

Since department programs drive the need for infrastructure investment, each department has a related capital outlay program to support this need. For the specifics on the San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy's Capital Outlay Program, see "Infrastructure Overview."