FLOODC00297 - Laserfiche WebLink

Home Browse Search

The plan contains no specific information about Chatfield and when Denver Water will ask the Board for a Drought Declaration and allow the pool to be drawn down. Denver Water has, however, provided some elevation information it would like us to consider in making a declaration decision: Elevation 5,421.41 5,414.63 5,401.23 Total Reservoir Stora e Reduction 1,600 AF 6,400 AF 14,400 AF We have been consulting with the Corps of Engineers, Denver Water, and State Parks regarding the operations below elevation 5432.0. The State Engineer Office in cooperation with the Corps set the release levels at for the conservation pool below elevation 5432.0. We agree as a result of this consultation that Denver's drought plan applies to all its reservoirs. Thus, if the average level of storage of all Denver's reservoirs is less than 40 percent, they are in a severe drought and Chatfield should be used for water supply regardless of the impacts to the recreational activities at Chatfield Reservoir. However, Denver has not yet declared that it is in a "severe" drought at all its reservoirs, but it is approaching a severe drought with respect to the current water level in Chatfield. The current water level is 5429.53 on July 15, 2002. When the elevation drops below 5417.0, the State will begin incurring additional operational costs for pumping irrigation water into the Last Chance Ditch. th Denver Water's Reservoir levels posted on web site as of Julv 14 South Inflow (cfs) Outflow Elevation Storage Full Elev. Capacity storage I capacity Platte (cfs) (feet) (acre feet) (feet) (acrefeet) (%full) System Antero -19 2 8941.13 18400 8942 20,015 92% ll-Mile 98 98 8597.61 99,864 8597 97,779 102% Cheesman 96 371 6760.49 25,921 6842 79,064 33% Strontia 706 225 5992.91 6,962 6002 7,863 88% Springs Marston 175 91 5534.65 17,685 5538 19,796 89% Sonth Plattesvstem avo. 75.19% Moffat Inflow (cfs) Outflow Elevation Storage Full Elev. Capacity storage I capacity System (cfs) (feet) (acre feet) (feel) (acrefeet) (%full) Gross 64 115 7215.98 20 065 7282 41,811 48% Ralston 0 0 6046.10 9,890 6046 10,749 92% Moffat svstem av.. 56.99% Western Inflow (cfs) Outflow Elevation Storage Full Elev. Capacity Storage / capacity slope (cfs) (feet) ( acrefeet) (feet) (acre feet) (%full) Dillon 98 50 8987.48 172,757 9017 254,036 68% Williams 8 100 7772.49 48,106 7811 96,822 50% Fork Western slone avo. 62.94% Denver Water's total system average Total stora e I total ca adt 66.83 % Action The decisions you must make are I) whether to make a Drought Declaration given current conditions? And 2) should a Drought Declaration be for 2002 only?