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<br />1.5 UPDATING PROCEDURES <br /> <br />These Guidelines will be updated occasionally to revise the published infonnation when needed <br />and to make amendments as additional regression equations are completed. The updating process <br />will generally involve the CWCB staff, the Committee, and the CWCB Board of Directors (Board). <br />The CWCB staff will gather additional data, review the subregional boundaries and regression <br />equations, recommend revisions as needed, and create new regression equations for other basins in <br />Colorado. The Committee will review, discuss, and vote on any major changes that are proposed <br />for the Guidelines. Finally, The Board will be presented with major revisions or additions that are <br />proposed for approval. Comments and questions related to these Guidelines may be directed to: <br /> <br />Thomas W. Browning, P.E, <br />Colorado Water Conservation Board <br />Flood Control and Floodplain Management Section <br />1313 Shennan Street, Room 721 <br />Denver, Colorado 80203 <br />Fax # (303) 866-4474 <br /> <br />1.6 REVISIONS <br /> <br />Version 1.0 <br />Version 1.0 of the Guidelines was published in February 1996. Version 1.0 included two chapters: <br />Chapter 1 provided general background infonnation, and chapter 2 provided specific details <br />regarding the regression methodology for the Arkansas River Basin. <br /> <br />Version 2.0 <br />Version 2,0 was published in October 1996 and included revisions to chapters I and 2, and <br />included new information for the South Platte River basin in chapter 3, The revisions to chapter I <br />were editorial in nature, and did not include any substantial changes to the content or methodology. <br />Revisions to chapter 2 included a change in the subbasin boundaries between the foothills areas and <br />the mountains areas. The new boundary definition between the foothills and mountains is based on <br />an elevation limit of generally 7,500 feet, except for in the northern part of the Arkansas Basin <br />where the boundaries were essentially unchanged. In addition, the regression equation for <br />subregion ARK-4b (foothills area to the east of Monument/Fountain Creeks) was changed to a <br />power equation in lieu of a linear equation, <br /> <br />Version 3.0 <br />Version 3.0 was published in July 1997 and included revisions to chapters 2 and 3, and included <br />new information for the Republican River basin in chapter 4. The revisions to chapters 2 and 3 <br />were minor, and did not in~lude any substantial changes to the content or methodology. Revisions <br />to chapter 3 included minor changes in the subbasin boundaries between the foothills subregions <br />and the mountains subregion. <br /> <br />7 <br />