2012-08-01_HYDROLOGY - M1980149 - Laserfiche WebLink

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Ms. Michelle L. Hatcher Hokestra SWSP July 30, 2012 below: Page 4 of 7 The 3.75 shares of the Rural Ditch Company will be used directly to replace depletions between May and September. In order to claim credit for the delivery of the 3.75 shares of the Rural Ditch to the river, the shares must be measured to the satisfaction of the water commissioner. You have indicated that the County's Rural Ditch farm headgate has been improved and that construction plans are being developed to pipe the return ditch and install appropriate measuring devices. The Applicant anticipates that construction will commence this spring or summer. Until the pipeline and measuring devices are installed, the applicant proposes to run the 3.75 shares of the Rural Ditch through the Tined Varra Pit No. 112, which lies directly to the south of the Hokestra Property and across the Rural Ditch, use the measuring device already installed in the 112 Pit, and return the shares back to the river for replacement. This proposal is accepted for this SWSP; however for any subsequent renewal request the applicant must demonstrate to the satisfaction of the water commissioner that a turn -out structure on the existing farm diversion point on the ditch used to divert water to the historically irrigated lands has been installed or is diligently being pursued by Weld County. Excess river credits attributable to the 3.75 shares of Rural Ditch are proposed to be stored in the Varra Pit No. 112. The excess river credits which accrue to the stream system will be stored in the Varra Pit No. 112 in June through September 2012. It is estimated that 81.89 acre -feet of excess credits will be available for storage during this plan period. According to the reservoir operations model for the 112 Pit, the water placed in the 112 pit will incur an evaporative loss of 5 %, or 4.09 acre -feet. The 112 Pit has access to a ditch headgate, which will be used to deliver the excess river credits to the lined reservoir for storage. The stored water will be released from the pit to cover depletions from the site as shown in attached Table 5. The 3.75 shares of the Rural Ditch were historically used to irrigate the four farms listed Adler Farm — The Adler farm was historically irrigated using 5 shares of the Rural Ditch of which Weld County owns 1 share. The 5 shares were historically used to irrigate 168 acres of corn and 63 acres of Pasture grass, all of which has been taken out of production. The historic consumptive use of the 5 shares was determined to be 209.6 acre -feet. The pro -rata historic consumptive use for 1 share is 41.9 acre -feet. Gould Farm — The Gould farm was historically irrigated using 2 shares of the Rural Ditch of which Weld County owns 1 share. The 2 shares were historically used to irrigate 55 acres of corn, all of which has been taken out of production. The historic consumptive use of the 2 shares was determined to be 66.4 acre -feet. The pro -rata historic consumptive use for 1 share is 33.2 acre -feet. The Villa Property — The Villa Property was historically irrigated using 1.5 shares of the Rural Ditch owned by Weld County. The 1.5 shares were historically used to irrigate 27 acres of corn and 27 acres of Pasture grass, all of which has been taken out of production. The historic consumptive use of the 1.5 shares was determined to be 61.7 acre -feet. Slovek Property — The Slovek Property was historically irrigated using 1 share of the Rural Ditch of which Weld County owns 0.25 shares. The 1 share was historically used to irrigate 30 acres of corn and 30 acres of pasture grass, all of which has been taken out of production. The historic consumptive use of the 1 share was determined to be 50.5 acre -feet. The pro -rata historic consumptive use for 0.25 shares is 12.6 acre -feet.