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Exhibit 3 (cont'd). COLORADO RIVER DECISION SUPPORT SYSTEM (CRDSS) <br />Historic Data Extensiou Feasibility. <br />Streamflow and climate gages used in the Water Resources Planning and CU Models. <br />Summary <br />Streamflow <br />No. of ~a~es <br />Data Extension Date With data to ext. date' % <br />1960 106 58 <br />1950 88 48 <br />1940 76 42 <br />1930 41 22 <br />1920 33 18 <br />1910 23 13 <br /> Total gages in model: 183 <br />Precipitation <br />No. of ~a~es <br />Data Extension Date With data to ext. date' % <br />1960 46 81 <br />1950 43 75 <br />1940 13 23 <br />1930 13 23 <br />1920 12 21 <br />1910 12 21 <br /> Total gages in model: 57 <br />Temperature <br />No. of ~aaes <br />Data Extension Date With data to ext. date' <br />1960 38 75 <br />1950 30 59 <br />1940 13 25 <br />1930 13 25 <br />1920 12 24 <br />1910 12 24 <br />Total gages in model: 51 <br />~ The sage record may not be complete from the cun•ent calibration period (197 - 1991) to the <br />extension date. Gages were chosen based on whether they had data (iom the extension date <br />before,, to, or beyond the calibration pc~iod. <br />Appendix E E-40 <br />