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and southern portions of the MVIC service area are provided water via the Rocky Ford Ditch <br />and the Highline Ditch, laterals operated by the Company. Totten Reservoir (WDID 713601) <br />provides regulating storage for deliveries into the Rocky Ford Ditch. <br />Main Canal No. 2 historically ran parallel to the Dolores River for about six miles and then <br />crossed the basin divide into the McElmo Creek drainage at a low saddle known as the Great <br />Cut. The water was then bifurcated and conveyed through the "U" Lateral and through the <br />Lone Pine Lateral for delivery to the northwestern portion of the MVIC service area. <br />The MVIC also owns and operates three reservoirs to regulate the delivery of water to its <br />water users. Groundhog Reservoir (WDID 713612) is located high in the Dolores River basin <br />and was historically used to supplement diversions through the Main Canals No. 1 and No. 2 <br />in the late summer months when the natural flow of the Dolores River declines. It has a <br />capacity of about 21,700 acre-feet. Narraguinnep Reservoir (WDID 713602) is an off- <br />channel reservoir which receives water via the Main Canal No. 2 and the Lone Pine Lateral. <br />This storage was historically used to regulate late season deliveries to the MVIC irrigated <br />lands. It has a capacity of about 19,000 acre-feet. The third MVIC reservoir is Totten <br />Reservoir (WDID 713601), with a capacity of about 3,400 acre-feet. This facility provides <br />regulation of irrigation deliveries to those portions of the MVIC system under the Rocky <br />Ford Ditch on the south side of McElmo Creek. <br />After completion of McPhee Dam and Reservoir in 1984, the MVIC operation was modified. <br />The water rights and diversions for Main Canal No. 1 (formerly WDID 714673) are now <br />delivered through the newly constructed Dolores Tunnel (WDID 714675). On the receiving <br />side of the tunnel, the division engineer has separately identified the imported water <br />according to the following uses: (1) Irrigation water deliveries to the MVIC (WDID 324675 <br />+ WDID 320697 (the Rocky Ford Inlet)); (2) Municipal deliveries to the city of Cortez <br />(WDID 320680); (3) Domestic water deliveries to the Montezuma Water Company (WDID <br />322001); and (4) Dolores Project irrigation deliveries to the Ute Mountain Ute Indians <br />through the Towaoc-Highline Canal (WDID 320884). The water rights for the city are <br />discussed below. The deliveries of the Indian project water did not begin until 1994. <br />The water rights for Main Canal No. 2 (formerly WDID 714674) are now delivered through <br />the outlet works of the Great Cut Dike (WDID 714676), the latter being a 65-foot high earth <br />dam constructed across the Great Cut. At most operating levels of McPhee Reservoir, <br />deliveries into the "U" Lateral and the Lone Pine Lateral can be made by gravity; however <br />provisions are available to pump the water into the "U" Lateral if the reservoir levels are too <br />low. For the period of record prior to 1986, the diversions from the Dolores River were <br />recorded under WDID 714674. <br />For purposes of keeping track of the imported water from the Dolores River, the division <br />engineer has operated a number of measuring gages. Prior to 1987, deliveries through the <br />Lone Pine Lateral were recorded as the sum of the Lone Pine Lateral at Big Drop (WDID <br />320701) and the Narraguinnep Inlet (WDID 320699). Deliveries to irrigation were reflected <br />as the sum of the Lone Pine Canal at Highway Bridge (WDID 320702) and the Narraguinnep <br />Reservoir Outlet (WDID 320700). After completion of the Dolores Project and installation of <br />the measuring flume at the Great Cut Dike, the diversions to storage in Narraguinnep <br />San Juan & Dolores River Basin Information 2-4 <br />