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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />.... 7':1 ~ <br />J _v <br /> <br />MEMORANDUM <br /> <br />COLORADO WATER CONSERVATION BOARD <br />J. William McDonald <br />Direclor <br /> <br />TO: <br /> <br />Dan Law <br />Dean SUndt piS <br /> <br />FROM: <br /> <br />DATE: March 10, 1982 <br /> <br />SUBJECT: Organization of Colorado Salt Loading <br />Source Inventory for Colorado River Basin <br /> <br />The objective of the subject inventory is to identify those <br />sources of salt loading to the Colorado River system that originate <br />on lands within the State of Colorado. In order to allow for a <br />more detailed analysis, the Colorado River Basin within the State <br />will be divided into seven subbasins. The subbasins are as <br />follows: <br /> <br />Yampa <br />White <br />Mainstem above Cameo Station <br />Mainstem Cameo to state line <br />Gunnison <br />Dolores <br />San Juan tributaries <br /> <br />All available documentation of salinity studies will be identified <br />and considered for areas within each of the subbasins. The various <br />technical reports, water resource investigations, and water quality <br />management plans prepared by or for the federal, state, and local <br />governments will be used to account ~or as much of total subbasin <br />annual salt yield as possible. <br /> <br />The average annual salt yields from lands within Colorado will <br />be determined using U.S.G.S. water quality and streamflow data from <br />1966-80. Portions of subbasin salt yields not accounted for in <br />existing literature will be identified. <br /> <br />Sources of salt loading will be identified as natural point, <br />natural diffuse, or manmade whenever the information is available. <br /> <br />DS:cs <br /> <br />-4- <br />