DWR_3459163 - Laserfiche WebLink

Home Search

Cristyn Radabaugh June 28, 2019 Page 6 of 10 19) Substitute supplies used for exchange must be delivered at a Catlin Canal augmentation station through a measuring device approved by the Division Engineer. The amount of substitute supply available for exchange between the augmentation station and Arkansas River shall be assessed a transit loss that is subject to modification as determined by the Division Engineer. 20) During any of the three operational years, any water attributable to the Subject Shares that would otherwise be available to the Applicants (after accounting for ditch loss) which the Applicants are not able to divert or use because of operation of any volumetric limit must be returned to the Arkansas River through one or more augmentation stations on the Catlin Canal following diversion at the Catlin Canal headgate and shall not be available for irrigation, augmentation or any other use until such time use of such water is again allowed in accordance with the volumetric limits of this approval. 21) Surface return flow obligations must be calculated daily and must be replaced by delivery of the IWSA Catlin Canal shares at the augmentation station(s). On a daily basis, Applicants must replace the calculated amount of tailwater return flow obligation. On a monthly basis, Applicants must demonstrate that all tailwater return flow obligations have been replaced. 22) Ground water return flow replacement requirements for the Thelin and Mayhoffer West farms must be calculated using the unit response functions included in Enclosure 4. (Thelin Table A-9; Mayhoffer West Table B-9). Mayhoffer South farm analysis indicated 96% of the return flow occurred during the first month and 4% in the second month and would therefore allow a "wrap" of the second month into the first month. The Mayhoffer East return flows were presumed to return to the river in the same month of delivery in the application and will be included with daily surface return flow delivery obligations, however, per Condition 8 above, an analysis of the lagged return flow is required to be updated by August 1, 2019 based on the information in Enclosure 3. 23) Applicants must deliver appropriate amounts to each of the three recharge ponds to attempt to produce a "pay as you go" operation based on unit response functions to be applied to deliveries of the shares to the ponds upon successful infiltration as computed below. The unit response functions for each pond are included in Table E-1 in Enclosure 5. 24) On a daily basis, Applicants must deliver the groundwater return flow portion of Mayhoffer West and Thelin farm Catlin Canal share deliveries, plus consumptive use water to replace evaporation, to the recharge ponds in a manner that will ensure correctly timed return flows. On a monthly basis, Applicants must demonstrate that the ground water portion of the Catlin Canal share deliveries were delivered to and infiltrate at the recharge ponds. 25) All recharge ponds must be surveyed and stage -area -capacity tables must be approved by the Division Engineer before use (unless previously authorized for use under a separate approval).