2013-03-28_HYDROLOGY - M1977151 - Laserfiche WebLink

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Water Year Total Annual De ivery (acre -feet) GIC Direct Flow Fossil Creek Reservoir 2011 13.68 0 2012 39.56 0 Average 26.62 0 Mr. Jared Dains, E.I. Page 4 of 8 March 27, 2013 decreed in case nos. 1996CW658. Pursuant to paragraph 6.7.6 of case no. 1996CW658, the subsurface component of the return flow obligation will be calculated based on the 5 year running average annual farm headgate deliveries of GIC direct flow water and Fossil Creek Reservoir water. 2011 was the first year that these shares were used for augmentation use and so for the purposes of determining the subsurface return flow obligations, the actual deliveries for 2 years (2011 and 2012) will be used.The average annual deliveries for the last 2 years are shown in the table below: As specified in case no. 96CW658, all deliveries of GIC water incur a return flow obligation to the stream system made up of a surface and subsurface component. The surface component of the return flow obligation of GIC direct flow water will be calculated by multiplying deliveries by 0.237 (23.7 %). The surface component of the return flow obligation associated with the Applicant's use of Fossil Creek Reservoir water will be calculated by multiplying those deliveries by 0.201 (20.1%). The subsurface component of the return flow obligation will be calculated by multiplying the average annual deliveries of GIC water, shown above, by the monthly subsurface return flow factors given in Appendix A -2 of the decree entered in case no. 96CW658 (see Table 4). The quantity of GIC water remaining after the Applicant has satisfied its return flow obligations is equivalent to the historical consumptive use attributable to the shares. You have projected GIC direct and Fossil Creek Reservoir deliveries for this plan period based on a dry year yield per case no. 03CW348 of 17.75 acre -feet per share and 0.54 acre -feet per share respectively. As shown in Table 5, total credit for the Applicant's 3.0 GIC shares was estimated to be 42.24 acre -feet for the irrigation season (April through October). The Applicant has obtained a lease from the Graham Drainage Ditch Company for 35.4 acre -feet of replacement water from the Graham Seepage & Drainage Canal water right (WDID 0301321) for the period of April 2013 to October 2013. This water right was decreed in case no. W -7818 as developed water, not tributary to the South Platte River. The Court found that 2,800 acre -feet of water was developed by the construction, development, and operation of the Graham Seepage & Drainage Canal; however, historically, only 1,330 acre -feet were consumptively used, with 1,470 acre -feet discharged as waste water to the Cache La Poudre River and its tributaries. In the decree entered in case no. W -7818, the Court indicated that it considered the Supreme Court decisions in the cases of Southeastern Colorado Water Conservancy District et al. v. Shelton Farms and Southeastern Colorado Water Conservancy District v. Colorado -New Mexico Land Co., Inc. 187 Colo. 181, 529 P.2d 13212 (1974). Based on the above, this SWSP will only recognize 1,330 acre -feet per year of consumable water. Deliveries of replacement water will be measured at a flume located approximately 380 feet from the mouth of the Graham Seep Ditch (WDID 0302906). The mouth of the Graham Seep Ditch is located approximately 1,030 feet from the north section line and 1,350 feet from the east section line of said Section 36, adjacent to the estimated point of depletion from the Greeley Pit; therefore no transit losses were assessed. A non - irrigation season lease in the amount of 22.5 acre -feet plus any applicable transit losses is required to offset depletions occurring November 2013 through March 2014. As of the approval date of this SWSP, the Applicant has not secured or finalized their non - irrigation season lease water. Therefore this plan will expire at the end of October 31, 2013 but will be