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<br /> <br />Preliminary Water-Management Plan <br />~ GEISERT GRAVEL OPERATION <br />' Greeley, Colorado <br />1. INTRODUCTION <br />The proposed gravel operation will take place on a parcel <br />of land of approximately 87.5 acres, located generally in the <br />' NE 4SW?.~ and the PPZSE?; of Section 31, T6N, R65W north of Greeley, <br />Colorado. Gravel will be extracted by both wet and dry pro- <br />' , cesses, over a period of time yet to be determined. <br />Associated with any gravel operation in the State of <br />' Colorado is a Water Resource tanagement Plan which provides <br />appropriate information regarding quantitative and qualitative <br />I effects that will result from the mining plan. The purpose of <br />this report is to provide preliminary comments on the required <br />scope and content of the Plan, to summarize information avail- <br />able to date, and to recommend tivhatever additional investiga- <br />tions may be required. <br />' 2. HYDROLOGIC CONSIDERATIONS <br />At the present time, the gross water supply to the 87.5 <br />acre parcel is provided by precipitation and by an irrigation <br />' well in the northwest corner of the property. As a result, <br />depletion of the water supplies available to the South Platte <br />River watershed due to the irrigation of corn has historically <br />been accounted for as a reduction in tributary ground~.aater <br />inflow to the Cache la Poudre River. <br />' !-lhen the gravel operation is completed several years hence, <br />the depletion resulting from the irrigation of corn will be <br />' replaced by a depletion resulting from a combination of non- <br />irrigated open space, developed areas, and open water surfaces. <br />' The gross extent of each has apparently not yet been precisely <br />(1) <br />t <br />