2015-11-03_HYDROLOGY - M1982131 - Laserfiche WebLink

Home Browse Search

Bucklen Pit SWSP Page 4 of 8 October 27, 2015 accordance with paragraph 19 of case no. 1996CW658 the lands historically irrigated by the "floating shares" are reported to have already been dried up and are no longer irrigated. In paragraph 6.7.4 of the decree in case no. 1996CW658, future farm headgate deliveries of Poudre Prairie's 67.75 shares were limited to 1,712 acre-feet per year (25.26 acre-feet per share), and 12,631 acre-feet (186.43 acre-feet per share) in any consecutive 10 -year period. Deliveries of the Applicant's six shares of GIC water under this plan must comply with these per-share limits. The historical return flows shall be maintained in accordance with the return flow factors identified in case no. 1996CW658. The return flows associated with the delivery of Fossil Creek Reservoir water that is attributable to the Applicant's six GIC shares shall also be maintained in accordance with the surface and subsurface factors decreed in case nos. 1996CW658. For the purposes of this SWSP, the Applicant used a projected yield of 20.31 acre-feet of GIC direct flow water per share and L19 acre-feet of Fossil Creek Reservoir deliveries per share. These amounts are consistent with projected deliveries per share for Year One as described in paragraph 28 of the decree entered in case no. 2003CW348. Projected deliveries for Year One were calculated in accordance with paragraph 20.3.3 of the decree entered in case no. 2003CW99, and are based on 2002-2006 recorded deliveries. As specified in case no. 1996CW658, all GIC direct flow deliveries incur an immediate surface return flow obligation of 23.7%, and all Fossil Creek deliveries incur an immediate surface return flow obligation of 20.1%. The estimated consumptive use credit is therefore 15.50 acre-feet per share for GIC direct flow water, and 0.95 acre-feet per share for Fossil Creek Reservoir water. In total, the six GIC shares are expected to have a net credit to the river of 96.68 acre-feet (not including subsurface return flow obligations, which are separately accounted for as a depletion as discussed above). The use of the Year One projected deliveries is acceptable for this plan period and appears reasonable based on current conditions. Should actual GIC deliveries be less than projected deliveries, the Applicant is obligated to obtain additional or alternate replacement supplies to replace all depletions at the Bucklen Pit. City of Aurora Lease A lease of 18.8 acre-feet of fully consumable water provided by the City of Aurora ("Aurora") will be used to make replacements during the period of November 2015 through March 2016. The releases will be made from the Metro Waste Water Reclamation Facility (WDID 0200700) located in Denver on the South Platte River approximately 66 mites upstream from the Cache la Poudre confluence. Therefore a 16.5% (0.25% per mile) river transit loss will be assessed on all deliveries, unless otherwise determined by the Water Commissioner for District 2. During the months of November through March, it is possible for a call to be placed at the Evans Number 2 Ditch headgate for Milton Reservoir, or a call at the Western Ditch, or the Union Ditch to fill Lower Latham Reservoir, any of which could potentially sweep the river. It is the Applicants responsibility to track the daily call and make arrangements as necessary to ensure this water is bypassed or otherwise delivered to the Cache la Poudre and South Platte River confluence. The District 3 Water Commissioner has confirmed there is no call in the winter for the stretch of the Cache la Poudre River between the Bucklen Pit and the confluence with the South Platte River. Therefore, as long as a diversion structure is not sweeping the South Platte River, the Aurora lease is able to provide replacement water on behalf of the Bucklen Pit. Additional Sources Supplemental leases will be obtained in the event that the above-described sources are insufficient to replace all depletions from the Bucklen Pit. Such supplemental leases may be obtained from any authorized augmentation source contained in a gravel pit approved pursuant to §