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BOARD00690
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Last modified
8/16/2009 2:53:18 PM
Creation date
10/4/2006 6:43:04 AM
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Board Meetings
Board Meeting Date
1/24/2001
Description
WSP Section - Power Converstion Coefficient Study - aka Groundwater Pumping Measurement Study
Board Meetings - Doc Type
Memo
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<br />. <br /> <br />. <br /> <br />. <br /> <br />.. " ."'~:'I <br /> <br />381 <br /> <br />STATE OF COLORt\DO <br /> <br />Q <br /> <br />Colorado Water Conservation Board <br />Department of Natural Resources <br />1313 Sherman Street, Room 721 <br />Denver, Colorado 80203 <br />Phone: 13031 666.3441 <br />FAX: ()031 666-4474 <br />www.cwcb.state.co.us <br /> <br />Bill Owens <br />Governor <br />Greg E. Walcher <br />Executive Director <br /> <br />MEMORANDUM <br /> <br />TO: <br /> <br />\J)~ Rod K,h.dch <br />Colorado Water ConseNation Board Members. , eweB D;,o<:'or <br />('~ , Dan McAuliffe <br />O\.\......, Deputy Dire(.tor <br />Steve Miller, Interstate Streams Investigations Section <br /> <br />FROM: <br /> <br />DATE: <br /> <br />January 22, 2001 <br /> <br />SUBJECT: <br /> <br />January24-25, 2001 Board Meeting, Arkansas River Basin Issues <br />Agenda Item 21d: Power Conversion Coefficient (PC e) Study, <br />(aka Groundwater Pumping Measurement Study) <br /> <br />INTRODUCTION <br /> <br />The Board has been assisting the State Engineer in funding a study of well pumping <br />measurement methods being used in the Arkansas River Basin. To date the Board has <br />contributed approximately $175,000 to this effort. This agenda item is a request for <br />approval of an additional $50,000 expenditure from the Construction Fund for completion <br />of a second phase of the study. <br /> <br />BACKGROUND <br /> <br />Since 1997 the U. S. Geological SUNey (USGS) and the State Engineer have been <br />conducting a cooperative study of the power conversion coefficient ("PCC") method to <br />measure groundwater pumping volumes as currently allowed by the State Engineer's <br />Arkansas River Basin groundwater regulations. The State of Kansas continues to <br />challenge this method in testimony during the ongoing Kansas v. Colorado litigation. The <br />study shouid help the Special Master resolve this aspect of the controversy surrounding <br />Colorado's compact compliance efforts. The study has evaluated the accuracy of the PCC <br />method by comparing pumping volumes calculated using the PCC method to volumes <br />directly measured with totalizing flow meters on a randomly selected sample of wells. <br /> <br />A major cost of the initial study was the installation of meters on upwards of 100 irrigation <br />wells in the Basin, S8 97-008 authorized $100,000 from the CWeB Construction Fund for <br />Colorado's share of the study costs. HB 98-1189 authorized a $75,000 increase to allow <br />the study to continue. The State Engineer has contributed considerable staff time <br /> <br />Flood Pr?tectkm . Water Project PI{\nning and Financing" Stream und lake Pmte-ctiofl <br />Water Supply Protection. Conservation Planning <br />
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