Substitute Water Supply Plan Forum September 1 2004

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21. For plans that propose short-term leases as a replacement source, assurance will be required to guarantee that a replacement source will be available in the event that the lease is not renewed. This assurance gay be in the form of a bond, dedication of a back -up water source or other method that the State Engineer feels is adequate to assure that unr laced depletions will not occur. 22.44. Nontributarv, transbasin, or other fully consumable sources may be used for replacement purposes in the substitute water supply plan provided adequate engineering and documentation are supplied. Use of nontribg!M water must comply with the Colorado Revised Statutes the pertinent decrees and if applicable the Statewide Nontributary Ground Water Rules. All relinquishment required by decrees, permit, or the Statewide Nontributary Ground Water Rules must be met before using nontributary ground water. Nontributary ground water used as replacement water must be permitted for augmentation purposes. Lawn irrigation return flow credits will not be accepted unless established by the water court. Irrigation return flows from the Colorado -Big Thompson Project water cannot be used for replacement purposes. All replacement water must be made appurtenant to the site by dedicating it t solely for the purposes of replacement at the site for the duration of the substitute water supply plan and recording that with the county. , 23.15- Many plans utilize the historical consumptive use associated with irrigation water rights as part of their replacement sources. All or a portion of the land irrigated by the surface water right is dried up to provide historical consumptive use replacement credits. This source of consumptive use replacement water will only--not be available to replace irrigation season depletions unless sufficient water is placed in an acceptable storage vessel for release during the non - irrigation season, or as provided by change of use decree. 24.4 Since only the water court has the authority to approve changes in water rights, those substitute water supply plans approved by this office that involve a change of use may not be able to claim the period of time while operating under the approved substitute water supply plan for historical consumptive use credit. 25.4 Analysis of historical consumptive use shall be based upon the modified Blaney - Criddle method or other acceptable methods or determination from previous court decrees for the subject water right, if applicable. The historical use analysis shall be based on firm yield ,_ N - - - - ! _ I CST= 23.15- Many plans utilize the historical consumptive use associated with irrigation water rights as part of their replacement sources. All or a portion of the land irrigated by the surface water right is dried up to provide historical consumptive use replacement credits. This source of consumptive use replacement water will only--not be available to replace irrigation season depletions unless sufficient water is placed in an acceptable storage vessel for release during the non - irrigation season, or as provided by change of use decree. 24.4 Since only the water court has the authority to approve changes in water rights, those substitute water supply plans approved by this office that involve a change of use may not be able to claim the period of time while operating under the approved substitute water supply plan for historical consumptive use credit. 25.4 Analysis of historical consumptive use shall be based upon the modified Blaney - Criddle method or other acceptable methods or determination from previous court decrees for the subject water right, if applicable. The historical use analysis shall be based on firm yield