The jurisdiction of the conservancy consists of land and water areas acquired for parkway use within the parkway whether by purchase or lease; other public lands operated by the conservancy on behalf of another public agency; and private lands which are in a land mitigation bank or which are adjacent to the parkway and downstream from the Highway 99 crossing and for which the owner desires the conservancy’s management and protection services or which are subject to a voluntary resource management agreement entered into with the conservancy.