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• Arroyo Springs Ditch <br />• Morgan Seepage Ditch <br />• Leigh F. Peterson Seepage WD <br />• La Jara Seepage Diversion Ditch <br />• Norton Seepage Ditch <br />• McDaniel Drain <br />19.5 cfs <br />19.0 cfs <br />15.0 cfs <br />10.0 cfs (diverted from SLV Drain No.l) <br />10.0 cfs <br />2.2 cfs <br />In addition to the decreed drain and seepage rights previously described, there are two substantial <br />drain systems that originate in District 22 and return water to La Jara Creek from lands irrigated <br />to the South. These include the San Luis Valley Drain and the tailwater system of the Richfield <br />Canal (which diverts from the Conejos River). Flows through both of these systems are measured <br />and the flows are apportioned to specific ditches on La Jara Creek with ownership in the drainage <br />right decrees. The San Luis Valley Drain and the Richfield Canal enter La Jara Creek just west <br />of the Town of La Jara. Owners in the Richfield Canal include the Keystone Ditch, L.E. <br />Shawcroft and Sons Ditch, and the Shawcroft Ditch. <br />A final drain system, the Morgan Drain, enters La Jara Creek just upstream of the Reed No. l and <br />No. 2 Ditches. Water deliveries to La Jara Creek from this drain become "native" water. District <br />Commissioners report that water seldom flows from this drain into La Jara Creek, but if it does, <br />the water is treated as native flow and administered as such. <br />Drain water that is routed through La Jara Creek then through ditch headgates is administered and <br />recorded by District Commissioners. <br />Reservoir Storage Rights and Operations <br />There are two major reservoirs in District 21, including: <br />• Terrace Reservoir (decreed capacity = 17,216 af) <br />• La Jara Reservoir (decreed capacity = 14,056 af) <br />In addition, there are several decreed storage rights for smaller reservoirs and lakes in the District <br />(e.g. Lost Lake, Cliff Lake, and Beaver Lake). All lakes are located on National Forest lands and <br />are not operated for irrigation use. <br />As with direct flow diversions, the surface water model being developed for the RGDSS will <br />consider certain storage structures as key. The District Commissioners confirmed that Terrace <br />and La Jara reservoirs are the principal storage structures in the District and the only ones that <br />significantly effect water rights administration. <br />Terrace Reservoir is owned and operated by the Terrace Irrigation Company (TIC). There are <br />approximately 30 shareholders in the TIC. The TIC also owns and operates the Terrace Main <br />Canal and the Alamosa Creek Canal. Terrace Reservoir is located approximately 12 miles <br />upstream of the Terrace Main Canal. The reservoir has an active capacity of 15,180 acre-feet, but <br />has been restricted to storage of 13,180 acre-feet since 1985. This restriction was imposed by the <br />State due to spillway capacity problems and the ability to adequately pass flood waters. Terrace <br />Reservoir has a conservation pool of 1,500 acre-feet that is owned by the Colorado Division of <br />Wildlife (DOW). <br />Use of water stored in Terrace Reservoir typically begins in the early irrigation season, and ends <br />in late May or early June as water levels in the river increase and direct flow priorities are in. <br />C:Acdss\D21_Mem.doc District 21 InterviewJuly 2, 1999 -Page 5 of 8 <br />