; and (B) the water resources of area streams, based on seasonally available flows, that are necessary to support aquatic, riparian, and terrestrial species and communities. (2) Wilderness water rights (A) In general The Secretary shall ensure that any water rights within the wilderness designated by section 2(b) required to fulfill the purposes of such wilderness are secured in accordance with subparagraphs (B) through (G). (B) State law (i) Procedural requirements Any water rights for which the Secretary pursues adjudication shall be appropriated, adjudicated, changed, and administered in accordance with the procedural requirements and priority system of State law. (ii) Establishment of water rights (I) In general Except as provided in subclause (II), the purposes and other substantive characteristics of the water rights pursued under this paragraph shall be established in accordance with State law. (II) Exception Not­with­stand­ing subclause (I) and in accordance with this Act, the Secretary may appropriate and seek adjudication of water rights to maintain surface water levels and stream flows on and across the wilderness designated by section 2(b) to fulfill the purposes of such wilderness. (C) Deadline The Secretary shall promptly, but not earlier than January 1, 2021, appropriate the water rights required to fulfill the purposes of the wilderness designated by section 2(b). (D) Required determination The Secretary shall not pursue adjudication for any instream flow water rights unless the Secretary makes a determination pursuant to subparagraph (E)(ii) or (F). (E) Cooperative enforcement (i) In general The Secretary shall not pursue adjudication of any Federal instream flow water rights established under this paragraph if— (I) the Secretary determines, upon adjudication of the water rights by the Colorado Water Conservation Board, that the Board holds water rights sufficient in priority, amount, and timing to fulfill the purposes of this subsection