resources and values of the areas described in sections 2(b) and 2(c) than existed as of the date of enactment of this Act. (4) Use of water resource facilities Subject to the provisions of this subsection and subsection (a)(4), the Secretary shall allow water resource facilities existing on the date of enactment of this Act within areas described in sections 2(b) and 2(c) to be used, operated, maintained, repaired, and replaced to the extent necessary for the continued exercise, in accordance with Colorado State law, of vested water rights adjudicated for use in connection with such facilities by a court of competent jurisdiction prior to the date of enactment of this Act. The impact of an existing facility on the water resources and values of the area shall not be increased as a result of changes in the adjudicated type of use of such facility as of the date of enactment of this Act. (5) Repair and maintenance Water resource facilities, and access routes serving such facilities, existing within the areas described in sections 2(b) and 2(c) on the date of enactment of this Act shall be maintained and repaired when and to the extent necessary to prevent increased adverse impacts on the resources and values of the areas described in sections 2(b) and 2(c).