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o South Platte River Basin - . The upper South Platte has snowpacks in the 130-105% range. The basin wide snowpack is 108% of average. Reservoir storage is 92% of average, 100% of last year, and 78% of total capacity. o Gunnison River basin - The Upper Gunnison has high snowpack in the 130-149% range. Basin wide snowpack is 133% of average. Reservoir storage is 107% of average and 88% oflast year and 60% of total capacity. The forecasted streamflows on Tomichi Creek and Gunnison River at Grand Junction are near 150% of average o Southwest River Basins - Snowpack in the San Juan Basin is the best in this area but it also pretty good in the Mancos, Dolores, Animas, San Miguel and La Plata basins. The basin wide snowpack average is 126% of average. Reservoir storage is 10 I % of average, 83% oflast year, and 66% of capacity. o Rio Grande River Basin - the snowpack is 140% of average and I identical to 2005. Reservoir storage is 103% of average and 121% oflast year and 31 % of total capacity. The Rio Grande at Del Norte is forecasted for 140% of average, South Fork Rio Grande at South Fork 148%. o Arkansas River Basin - The Purgatorie, Apishipa, and Cucharas-Herfano have the best snowpack in this basin. The basin wide snowpack is 141 % of average. Reservoir storage is 94% of average, 107% oflast year, and 33% of capacity. Division of Water Resources SWSI Reoort . Don West explained that the NRCS calculates the Statewide Water Supply Index in the winter and the DWR does it in the summer. The DWR report can is at http://water.state.co.us/pubs/swsi.asp . The range is +4 abundnant water supply to -4 severe drought. The highest is the Gunnison Basin at 3.9 and the lowest is the South Platte at +0.2. o South Platte Basin - 1.1, 112% of normal, plains reservoirs are 100% of capacity. Jim Hall Division I states the primary diversions are for storage by end of the month. All major reservoir filled. Recharge will help well augmentation groups. The dry conditions on the plains might see more irrigation calls unless we get rainfall. Municipal reservoirs are near full - 3 - Colorado SNOTEL Snowpack Update Map Percent of Average _>=150 D1300149 D110-129 090-109 D70-89 [ii]SO-69 -<'" ~NRCS ProvisionaJDafa SubjeCt to ReVIsIon Current as of Apr 15, 2008 'Data may nol provide avalid measure of conditions Colorado Streamflow Forecast Map Percent of Average _>=150 _13]-149 _!Ofj-109 _7D-89 _50-69 .,m Current as of April 1 , 2008 Flood Protection. Water Project Planning and Finance. Stream and Lake Protection Water Supply Protection. Conservation Planning