2014-02-28_HYDROLOGY - M1977522 - Laserfiche WebLink

Home Browse Search

Mr. Rick Parsons, P.E. L.G. Everist Combined SWSP Page 5 of 10 February 27, 2014 Rinn Valley Pit 125,000 715 4,173 0.2 Firestone Pit 72,300 2,210 2,262 0.2 Fort Lupton Pit 90,000 1,200 7,996 0.2 Lupton Meadows Pit 90,000 300 4,500 0.2 Star Water Resources 120,000 558 4,300 0.2 Replacements Saint Vrain Creek L. G. Everist owns 7.4 shares of the Rural Ditch Company. Of the 7.4 shares of the Rural Ditch water, 1 share will be dedicated for this plan for 2014 and 2015. The 7.4 shares of the Rural Ditch were historically used to irrigate 215 acres of pasture grass, corn and alfalfa. The land historically irrigated by the 7.4 shares is the same land that is currently being mined at the Rinn Valley Pit. Assuming a 10% ditch loss and a 55% irrigation efficiency, the dry-year consumptive use of the 7.4 shares was determined to be 337 acre -feet. The prorated consumptive use for the 1 share is 45.5 acre -feet. The historical return flow obligation of the 1 Rural Ditch shares will be maintained by the plan. The Rural Ditch share is delivered to Saint Vrain Creek through Central's Rural Ditch augmentation station (WDID 0502303) located at 40 010'31.18 "N, 104 057'5.06 "W near the end of the ditch. The delivery location is below the Last Chance Ditch headgate and above downstream calling water rights located on the South Platte River. L.G. Everist has fully reusable supplies stored in the Meadow West Reservoir. The entire capacity of 1,078 acre -feet in the Meadow West Reservoir was filled pursuant to a free river in September 2013. The water commissioner approved the entire capacity of the water as fully consumable. All releases of replacement water will be made at or above the point of downstream calling right. Releases from this reservoir to cover the Saint Vrain Creek Pits will account for the transit losses to Saint Vrain Creek of approximately 3.7 percent based on about 15 river miles from the reservoir releases to Saint Vrain River down to the confluence with the South Platte River times 0.25 percent winter transit loss per mile. The transit loss percentage is subject to change by the water commissioner. The applicant shall obtain prior permission from the District 2 Water Commissioner when making releases from this reservoir. Credit will not be given to any releases not measured and recorded to the satisfaction of the District 2 or District 5 Water Commissioners or Division Engineer. South Platte River L. G. Everist owns 2.25 shares of the Lupton Bottom Ditch. Of the 2.25 shares of the Lupton Bottom Ditch water, 1 share will be dedicated to this plan in 2014 and 2015. The 2.25 shares were historically used to irrigate 95 acres of corn and small vegetables. The land historically irrigated by the 2.25 shares is the same land that is currently being mined at the Ft. Lupton Pit. Assuming a 10% ditch loss and a 55% irrigation efficiency, the dry-year consumptive use of the 2.25 shares was determined to be 138 acre -feet. The prorated consumptive use and return flows for the 1 share is 61.33 acre -feet. The Lupton Bottom shares will be delivered back to the South Platte River at either the augmentation station located just north of WCR 14.5 (WDID 0202917) or the East Lateral Ditch into Little Dry Creek (WDID 0202307). The East Lateral Ditch into Little Dry Creek augmentation station is preferred for all releases, and if the WCR 14.5 augmentation station is used, the Applicant is required to first contact the District 2 Water Commissioner. Due to the distance from the augmentation station to the river, the Water Commissioner may assess transit losses on the amount released from the WCR 14.5 augmentation station.