2013-01-10_HYDROLOGY - M1999098 - Laserfiche WebLink

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Jared Dains South Platte Combined Replacement Plan January 9, 2013 Page 8 the 13.5 Whitney Ditch shares has been estimated from a dry -up farm headgate delivery of 24.75 acre -feet per share (which include the 15% ditch loss) or approximately 334 acre -feet for the 13.5 Whitney Ditch shares. After accounting for the return flow obligations the total consumptive use credit for 2013 is projected to be approximately 184.38 acre -feet. During the 2011 and 2012 irrigation season Aggregate utilized the return structure owned by the Whitney Irrigation Company located in the SE1 /4 of Section 30, Township 6 North, Range 66 West. Aggregate anticipates that this return structure will be utilized again in 2013. A copy of the agreement with Whitney Irrigation Company needs to be submitted to the State Engineer's Office if the return structure will be utilized in 2013. The dry -up locations for these shares were originally identified through an April 12, 2011 letter to the Division 1 Engineer. That letter stated the northern portion of Orr Farm #1 may continue to be irrigated using 1 of the 13.5 Whitney Ditch shares owned by the Applicant. In 2011 the entire Orr Ditch Farm #1 was removed from irrigation due to damage to the lateral serving the property. Therefore the entire farm is now included as a dry-up location for all 13.5 shares dedicated to the plan in 2013. The share dedication dated February 29, 2012 remains valid and is attached. The revised 2013 dry -up maps are to be provided by April 1, 2013 in accordance with our dry up protocol. Boyd & Freeman Ditch The 240 Boyd and Freeman Ditch shares were historically used to irrigate 85 acres of pasture grass. Using a Blaney- Criddle analysis the potential crop consumptive use for the 85 acres was determined to be 142 acre -feet. Assuming a 10% ditch loss and 55% farm efficiency the dry year consumptive use was determined to be 99.28 acre -feet. The applicant will utilize all 240 shares in this plan. The Boyd and Freeman Ditch shares were sold to the City of Greeley ( "Greeley ") in 2011. Greeley, in a letter dated September 12, 2011 confirmed that Aggregate may continue to utilize these shares for this plan. Prior to the 2012 irrigation season, Greeley installed an augmentation station that can measure these shares back to the river. In order for credit to be taken for these shares, they must continue to be measured, recorded, and accounted for to the satisfaction of the District 3 Water Commissioner and Division Engineer. The expected consumptive use credit for the 240 shares of the Boyd and Freeman has been estimated from a dry -up farm headgate delivery of 0.77 acre -feet per share (which include the 10% ditch loss) or approximately 184 acre -feet for all 240 shares. After accounting for the return flow obligations the total consumptive use credit for 2013 is projected to be approximately 135 acre -feet. This value is greater that the estimated dry -year yield because smaller deliveries were made in 2012, thus Aggregate owe Tess subsurface return flows for 2013. City of Greeley Lease The Applicant has leased 36.2 acre -feet of fully consumable replacement water from the City of Greeley ( "Greeley "). A copy of the Greeley letter dated November 30, 2012 confirming their lease was provided to this office with the SWSP request and is attached to this letter. Platte River Power Authority Past SWSPs approved the use of fully consumable water provided by the Platte River Power Authority( "PRPA "). PRPA has an Agreement dated August 10, 1978 for Reuse of Water for Energy Generation with the City of Fort Collins ( "Fort Collins ") and Water Supply and Storage Company ( "WSSC "). PRPA, Fort Collins, and WSSC also obtain approval of a plan for augmentation including reuse of water in case no. W- 9322 -78. This water right was decreed in case no. W- 9322 -78 as developed water, not tributary to the South Platte River. The Court found that 4,200 acre -feet, or