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2. San Juan and Dolores River Projects <br />and Special Operations <br />This section contains information that was gathered during initial data collection efforts for the <br />CDSS project. This section discusses the administration and operation of a number of special <br />water rights situations in the San Juan and Dolores River basins and is intended to provide a <br />general understanding of the operations necessary to incorporate those water rights situations in <br />the CRDSS Water Rights Planning Model (San Juan Model). <br />The following special water right operations have been identified in the San Juan and Dolores <br />River basins, based on a review of the key structures included in the San Juan Model as well as <br />W. W. Wheeler's interviews with the division engineer and his staff, and with a number of the <br />principal water users in the basin. <br />Subsection Description <br />2.1 San Juan Chama Project <br />2.2 Montezuma Valley Irrigation Company <br />2.3 Summit Reservoir System <br />2.4 Jackson Gulch Reservoir (Mancos Project) <br />2.5 Dolores Project (McPhee Reservoir) <br />2.6 Florida Project (Lemon Reservoir) <br />2.7 Pine River Project (Vallecito Reservoir) <br />2.8 Navajo Reservoir and New Mexico Water Rights Operations <br />2.9 La Plata River Compact <br />2.10 Miscellaneous Water Right Considerations for San Juan Model <br />2.1 San Juan Chama Project <br />The San Juan Chama Proj ect was developed by the U. S. Bureau of Reclamation (USBR) as a <br />participating project of the Colorado River Storage Project (CRSP). The project diverts water <br />from tributaries of the San Juan River in the Colorado River basin for delivery to the Rio <br />Grande basin. The water is used for municipal, domestic and industrial purposes in central <br />New Mexico and also provides a supplemental irrigation supply to approximately 92,500 <br />acres. The San Juan Chama Project was designed to yield an average of about 110,000 acre- <br />feetper year. <br />There are three principal diversion facilities on tributary streams in Colorado's Irrigation <br />Division 7. The Blanco Diversion Dam (WDID 294667) diverts from Rio Blanco and <br />delivers the water into the Blanco Tunnel. The Blanco Tunnel, with a design capacity of 520 <br />cfs, carries the water 8.64 miles from Rio Blanco to the Little Navajo River. The Little Oso <br />Siphon carries the water under the Little Navajo River and into the Oso Tunnel. Additional <br />water from the Little Navajo is diverted at the Little Oso Diversion Dam (WDID 774636) <br />and is added to the flow of the Oso Tunnel. <br />San Juan & Dolores River Basin Information 2-1 <br />