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mid - April, for example, the Yampa flow at Maybell was 1830 cfs, less than 70% of the average. The one anomaly was the White River gage near Meeker, where flow was above average. In the Colorado basin, reservoir storage was generally near 90% of capacity in April. Some were even full. Streamflow, on the other hand was well below average. At several stations, the Colorado, Fryingpan, and Roaring Fork were all between 40% and 50% of the longterm mean. In the South Platte basin, reservoirs were all below normal and, with rare exceptions, received little additional water. Flow at the Kersey gage, downstream of Denver, was no more than 500 cfs, half the average for mid - April, and the river was already under an 1871 call (i.e., any water right junior to this was out of priority and could not divert). Some of the major reservoirs, like Cheesman and Carter Lake were at less than 50% of full volume. Horsetooth Reservoir was at less than 30 %. The North Platte was in slightly better shape, because its snowpack had been consistently above that of the rest of the state. In the Arkansas basin, the situation was similar. Storage in the basin averaged about 40% of normal and flows in both the upper and lower river were some of the lowest ever recorded. By April 1 the river was under an 1884 call, slightly better than the 1874 call in April 1978, another low water year. B. Reservoir and Streamflow Conditions in Mid - Summer 1. Streamflow Streamflow conditions in June reflected the combination of low snowpack linked with the dry spring. The worst situation was found throughout the San Juan and was typified by Navajo Reservoir inflow, which was only 9 % of normal. In the Dolores, Mancos, Rio Grande and lower Arkansas basins the situation was similar with flows measured as small percentages of normal. The state's "best" conditions, while still quite dismal, were found in the tributaries of the upper Colorado River and the northern tributaries of the South Platte River. Here, flow volumes were 40% to 47% of average. The streamflow conditions for the entire state are captured in Figure II.3 which traces the Streamflow Index from July 1999 to October 2002. The Colorado index (red line on the graph) is an average of the streamflow indices for all streamgages in the state with 30 or more years of data. The figure shows the low flows of both the summers of 2000 and 2001 and the extremely low flows of 2002. For a specific example of a typical stream, comparing average and low flow hydrographs, see Appendix B. r -�