WSP04812 - Laserfiche WebLink

Home Browse Search

i2GS (Water'resources) -.-- correlation with Arkansas River [\t Granite. IJltimate diversions vrere obtained from modified altitude-runoff Graphs and varied as the flow of the Roaring Fork at Aspen. The increased dive'rsion column would then ~ bo the difference betTIeen the historical and ultimate diversion col'~s. Increased diversions, by providing adequ[\te storage in tho ,Arkansas River Basih, uould amount to about' 30,000 ~cre-feet'per year of which part would be lost to additionr.l reservoi'r cvtlporation ,and tr[\nsporta- tion (evaporation [\nd transpiration from stre~ 'channel) losses before dolivery could be made to irrigated land below Pueblo. This water weuld flow through the power system to be storod'in the potential Pueblo Reservoir for use by the Twin Lakes Reservoir, and Canal Comp- any on demand. Fryingpan Rivor Diversion 1-. I~ 1=. '. .Jnter weuld be diverted from the headwaters of Fryingpan Ri v~r, Nerth Fork of Fryin~pc.n River and H~ntcr Creek 'to the Lake Fork of the Arkanstls River as sh01'm on exhibit 3. Diversion would be made at 10,000 feet elevtltion from Fryingpnn River and North Fork of Frying- pan River. Hunter Creek would be diverted into the Fryingpan water- shed at about 10,750 feet elevati6n'. Tho total area cornman"ed by the diversion is 72.2 squnre miles fr"m the F'ryingpan River and North Fork of Fryingpan River and 5.0 squaro miles on Hunter Crock for a total of 77..2 square miles. I.." . '" Estimates of unit runoff from the area commanded by the diversion works are based on records and estimates ebtained by correlation of the" gages on tho Fryingpan River at Nerrie and on the North Fork of Fry- ingpan River near Norrie. Records of past diversions of tho Busk- Iv[\nhoe Tunnel were also utilized in preparing estimates of unit run- off from the higher altitudes on the Fryingpan River~ Of the 69.0 square miles commtlndeu by the gage on the Fryingpan River at Norrie, 57.3 square miles would be intercepted by the diversion and of 42.3 square miles commanded by the gage on the North Fork of Fryingpan River near Norrie, 14.9 square miles would be intercepted by the Diversion. The 5.0 square miles of drainage which contribute to the Frying- pan Diversion, but which lie in the Hunter Creek draina~e~ nre esti- mated to contribute water at the same rate as the watershed of the Fryingpnn River above the diversion structures; This is thought to be the c[\se since the drainage basins of Fryingpan River and Hunter Creek are contiguous to the srumo general exposure for a similar tor- rnin, nnd the very short records that are available for the two drain. age areas indicate that runoff rates are approxim~taiy equal. --.,------- --~- --- -~-- . . 6