Laserfiche WebLink
<br />Ol!il~~,~5 <br /> <br />RECEIVED FEB 0 a jSgS <br /> <br />[OJ. .c~,., .-..- <br />I : 1Yrl ;oil> <br />: Q,_U:U.t4JU'" U <br /> <br />.~ <br /> <br />INDEPENDENCE PASS TRANSMOUNTAIN DIVERSION SYSTEM <br /> <br />The Independence Pass Transmountain Diversion System is privately owned and operated <br />by the Twin lakes Reservoir and Canal Company (TlRCC) in the headwaters of the Roaring Fork <br />River basin. The project was initially developed in the 1930's for the purpose of collecting surplus <br />spring runoff from tributaries of the Roaring Fork and transporting the water through Tunnel No. <br />1 to the lake Fork drainage in the Arkansas River Basin (Irrigation Division 2). The transmountain <br />water was stored in the Company's Twin Lakes Reservoirs and subsequently released to provide <br />a supplemental irrigation water supply for lands under the Colorado Canal, east of Pueblo. In <br />1977, the water rights were changed in the Water Court to allow the water to be used for all <br />beneficial uses, including municipal and industrial. Today, the water is used predominantly for <br />these new uses ando.less water is used for irrigation...,' <br /> <br />Reference is made to the attached schematic map showing the location of the TlRCC <br />facilities. <br /> <br />DESCRIPTION OF PHYSICAL FACILITIES <br /> <br />Twin Lakes Tunnel No.1 (WOlD 3846171 - This tunnel is used to transport the waters <br />collected in the Roaring Fork River basin, under the Continental Divide to the Eastern slope. The <br />tunnel is approximately 3.8 miles long and has an estimated capacity of about 625 cfs. The <br />head works for the tunnel are located adjacent to Grizzly Reservoir on Lincoln Creek. Total <br />diversions through the tunnel are measured at its east portal. <br /> <br />Grizzly Reservoir (WOlD 3837791 - Grizzly Reservior is located on Lincoln Creek and serves <br />as the forebay for diversions into Tunnel No.1. It receives water from the Roaring Fork drainage <br />via Tunnel No. 2 and the Lincoln Gulch Connection Canal and from the New York Collection <br />System. It also commands a drainage area of about 16 square miles. It has an estimated capacity <br />of about 400 acre-feet, which is used for regulation of water into the Tunnel No.1. <br /> <br />Twin Lakes Tunnel No.2 (WOlD 3817631 - This tunnel is used to convey waters diverted <br />from lost Man Creek and the main stem of the Roaring Fork River to Grizzly Reservoir in the <br />Lincoln Creek drainage, where it can then be diverted through the transmountain Tunnel No.1. <br />The tributary drainage area above the diversion dam for the tunnel is approximately 9.9 square <br />miles, not includino the area tributary to the lost Man Diversion Dam. The tunnel currently has <br />a capacity estimated to be between 325 and 350 cfs. <br /> <br />Uncoln Gulch Connection Canal . This structure is used to convey water from the south <br />portal of the Tunnel No.2 to Grizzly Reservoir. A portion of this canal is an open-channel structure <br />and portions are closed conduit. The canal currently has a capacity estimated to be about 330 <br />cfs. The TlRCC has a decree to capture seepage and side-hill runoff which enters the canal. <br /> <br />lost Man Diversion Dam and Diversion Canal (WOlD 3817671- This diversion structure and <br />conveyance canal is used to divert surplus spring runoff from Lost Man Creek and delivery it to <br />a point on the Roaring Fork River above the diversion dam for Tunnel No.2. The drainage area <br />tributary to the lost Man Diversion Dam is approximately 9 square miles. <br /> <br />The New York Collection Canal. This structure is used to collect surplus spring runoff from <br />three tributaries of Lincoln Creek and transport that water by gravity to Grizzly Reservoir for <br />subsequent transmountain diversion through Tunnel No.1. Headgate No. 1 (WOlD 3817641 <br /> <br />z..-ol-9~ <br />