 The national park is bounded to the south by the Hawkesbury River; to the west by part of the Pacific Highway, part of the M1 Pacific Motorway, and the Peats Ridge Road; with the latter also forming the northern boundary; and to the east by the Brisbane Water, the Central Coast railway line, and urban areas.The Hawkesbury River Railway Bridge, part of the Central Coast Highway, part of the Pacific Highway and part of the M1 Motorway bisect various sections of the national park.Brisbane Water National Park is described as a ‘living space’ for plant and animal communities in the National Parks Plan of Management.