2012-05-21_HYDROLOGY - M1982155 - Laserfiche WebLink

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Jared Dains Page 2 May 21, 2012 the local drainage back to the stream. This is the last plan approval that will allow the assumption of instantaneous depletions. Please see condition of approval no. 5 of this plan for further details regarding future renewal requests. Since depletions occur to the stream immediately for withdrawals from the sump, all pumping under Well Permit No. 59834 -F must be replaced to the stream in an equal quantity. Any lagged accretions to the stream from unused water percolating via the storage pond are not considered in this SWSP. REPLACEMENTS Replacement water will be supplied by historic consumptive use credits from 20 shares of the Fountain Mutual Irrigation Company (FMIC) to Fountain Creek at FMIC's augmentation station located on Spring Creek in Colorado Springs. Replacement credits for the Fountain Mutual shares have averaged 0.7 acre -feet per share per year, representing a portion of farm headgate delivery. These share percentages have been confirmed in previous court cases, most recently Case No. 07CW51. You have estimated that the 20 shares would yield 14 acre -feet per year of replacement water, which is sufficient to cover the estimated depletions from the consumptive uses mentioned above. Transit losses will occur down Fountain Creek to the delivery point distance an estimated distance of 18 miles. An average transit loss of 0.25% per mile (total transit loss of 4.5 %) was estimated and assessed against the 20 shares of FMIC replacement credits, as shown in the attached Table 4. Please note that the 0.25% per mile transit loss is only an estimate and the actual transit loss shall be determined by the Fountain Creek Transit Loss Model, as outlined in condition of approval no. 7 of this plan. In the event that accounting shows that the FMIC shares are not yielding adequate amounts for replacements, you will seek supplemental augmentation water from the City of Fountain, the Security Water District, or the Widefield Water & Sanitation District. Actual water use and depletions during the operation will be submitted to the Division Engineer and Water Commissioner on a monthly basis. CONDITIONS OF APPROVAL This substitute water supply plan is hereby approved pursuant to Section 37 -90- 137(11), C.R.S., subject to the following conditions: This plan shall be valid through November 30, 2012 unless otherwise revoked or modified. Any request for renewal of this plan must be submitted with the statutory fee then in effect at least 90 days prior to the date of expiration (September 1, 2012). Should this substitute water supply plan expire without renewal or be revoked prior to its expiration date, all uses must cease immediately. 2. Water pumped from well permit no. 59834 -F must be measured in accordance with the "Amended Rules Governing the Measurement of Tributary Ground Water Diversions Located in the Arkansas River Basin ". 3. The surface area of groundwater exposed within the pit shall not exceed 0.2 acre. Documentation of water surface area may be required by the Division Engineer in the form of