Laserfiche WebLink
Upon future development in the basin, the workgroup estimated that the future <br />consumption would be in the range of 350,600 to 484,813 acre -feet. The recent Bureau <br />of Reclamation figures indicate that the lower range of estimated future values has now <br />been reached. Such consumptive development would leave an average of 1,453,388 to <br />1,587,600 acre -feet of surplus water. The workgroup concluded that the CWCB could <br />potentially appropriate instream flow rights in the San Juan River basin that would <br />command all of such surplus water without adversely affecting Colorado's ability to fully <br />utilize its compact apportionment. <br />Drainage Basin <br />The drainage basin upstream of the Boating Park is approximately 758 square <br />miles. The drainage basin upstream of the Cedar Hill gaging station is 1,090 square <br />miles. Therefore, the drainage basin upstream of the Boating Park is 70 percent of the <br />total drainage basin upstream of the Cedar Hill gage. <br />The streamflow at the Cedar Hill gage averaged approximately 664,000 acre -feet <br />per year during its period of record, 1935 through 2004. During this same period, the <br />drainage basin above the Boating Park produced an average of 587,000 acre -feet per <br />year, which is 88 percent of the Cedar Hill gage streamflow. For the 1928 through 2004 <br />study period that was used herein for the RICD analysis, the average annual streamflow <br />at the Boating Park was 581,000 acre -feet per year. <br />Present Water Supply <br />According to the Division of Water Resources call records, there has never been <br />an enforced call on the Animas River mainstem. We therefore conclude the Animas <br />River is presently under - appropriated. <br />Upstream Water Rights <br />As described later in this report, approximately 422,000 acre -feet per year will be <br />potentially available for development by upstream water rights junior to the RICD during <br />A <br />