2025-07-21_HYDROLOGY - M2008082 (2)

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Morton Lakes Substitute Water Supply Plan Renewal (Amended) July 21, 2025 Page 10 of 17 Wastewater Treatment Plant (MWWTP)) (WDID 0200700) in the SW '/ of the SW '/ of Section 1, Township 3 South, Range 68 West of the 6th P.M. A transit loss of 0.5% per mile is currently assessed from April through October and a transit loss of 0.25% per mile is currently assessed during November through March for delivery of water down the South Platte River. Such transit losses are subject to modification by the Division Engineer. The MWWTP is located approximately 25 miles upstream of the confluence of the South Platte River and Big Dry Creek where the mining depletions will accrue to the river, therefore the total transit loss will be 12.5% during the irrigation season and 6.25% during the non-irrigation season. Replacement supplies from Aurora include transit loss, so all Morton Lakes and Holton Lakes depletions are fully replaced at the point of depletions through December 31, 2025. The Applicant shall ensure that the replacement water makes it to the point of depletion or to the location of the calling water right located below the Morton and Holton Lakes point(s) of depletion. The Division Engineer, or their designated representative, will administer all such water transported in the South Platte River or its tributaries, including water for replacement of depletions, past intervening headgates to ensure that such water is not intercepted or otherwise diminished in quantity by diversion, use or other interference by intervening water rights and to assure that such water remains available and suitable for Applicant's uses under this plan, except when any intervening headgate is diverting the entire flow of ("sweeping") the river. In the event that delivery past headgates which sweep the river requires the installation of a bypass structure or the use of an existing bypass structure by agreement with a third-party, Applicant is responsible for either installing a new bypass structure with a continuous recording measuring device(s) as approved by the Water Commissioner or securing an agreement with a third-party to use an existing bypass structure and providing such information and agreement to the Division Engineer. Conditions of Approval I hereby approve this proposed SWSP in accordance with section 37-90-137(11 ), C.R.S.