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date or dates of determination or determinations of right to ground water <br /> by the water court, whichever comes first, times. the allowed average <br /> annual amount of withdrawal . <br /> B. The total amount of water recoverable from a specific aquifer <br /> from a well or wells shall be determined by multiplying the number of <br /> acres of overlying land as adjusted by Rule 8.C. , if necessary, by the <br /> average number of feet of saturated aquifer materials in the aquifer <br /> underlying those lands by the average specific yield of those saturated <br /> aquifer materials. The allowed average annual amount of withdrawal shall <br /> be 1% of the total recoverable water. In the case of aquifers to which <br /> the above formula does not apply, * e.g., fractured formations, the total <br /> amount of water recoverable shall be determined in accordance with an <br /> appropriate methodology, as determined by the State Engineer. <br /> C. If the cylinder or cylinders of appropriation of a well or wells <br /> meeting the requirements of Section 37-90-137(5) , C.R.S. overlap the <br /> overlying land claimed in the application, the number of acres of <br /> overlying land claimed in the application shall be reduced by the number <br /> of acres of the cylinder or cylinders of appropriation which overlap the <br /> land, unless the water court has determined some other acreage to <br /> represent the cylinder or cylinders of appropriation which overlap the <br /> land. The area of the cylinder of appropriation of a well meeting the <br /> requirements of Section 37-90-137(5), C.R.S. shall be computed as defined <br /> in Rule 4.A.7), making the following assumptions, if necessary: <br /> 1 ) In the event that the well meeting the requirements of <br /> Section 37,-90-137(5), C.R.S. does not fully penetrate the aquifer, the <br /> radius of the cylinder of appropriation for that well shall be calculated <br /> assuming that it does fully penetrate that aquifer. <br /> 2) In the event that a well meeting the requirements of Section <br /> 37-90-137(5), C.R.S. is constructed so as to produce water from more than <br /> one aquifer, cylinders of appropriation shall be calculated for each <br /> aquifer. The production of the well from each aquifer shall be allocated <br /> in proportion to the historical production of the well from each aquifer. <br /> If no data are available to show what the production from each aquifer <br /> was, the production shall be divided Equally between the aquifers. <br /> 3) In the event that the Specific yield for a well meeting the <br /> requirements of Section 37-90-137(5), C.R.S has not been specified by <br /> decree, it shall be assumed to be the same as for the well for which an <br /> application for a permit is being evaluated, absent Site specific data for <br /> the existing well . <br /> 4) In the event that the thickness of saturated aquifer <br /> materials for a well meeting the requirements of Section 37-90-137(5) , <br /> C.R.S. has not been specified by decree, the thickness of saturated <br />