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Water Resources Administered <br />Water resources administered by the District 22 Commissioners include all those where water <br />rights have been decreed by the State of Colorado. In District 22, these water resources include <br />those located on: <br />• Conejos River (Main River and Little River) <br />• Rio Los Pinos <br />• Rio San Antonio <br />• Fox Creek <br />• Massie Creek <br />• Trail Creek <br />• Mill Creek <br />• Several other minor tributaries to the Conejos River <br />The Conejos River extends roughly 70 miles between Platoro Reservoir and its confluence with <br />the Rio Grande near Las Sauces. The majority of the water rights administered by the District <br />Commissioners are located on the Conejos River, Rio San Antonio and Rio Los Pinos. The Rio <br />San Antonio originate in New Mexico and the Rio Los Pinos crosses out of Colorado and into <br />New Mexico before turning back into Colorado. Two of the uppermost diversion points on the <br />Rio Los Pinos are actually located in New Mexico, and outside of District 22. <br />Stream Flow Measurement Points <br />There are several stream flow measurement points along the Conejos River and tributaries within <br />District 22. The most significant measurement point is the USGS gauging station named Conejos <br />River at Mogote (ID No. 8246500). This gage is one of the "Index Gages" used by Water <br />Division 3 in their administration of the Rio Grande Compact. The Mogote Gage is located near <br />the mouth of the Conejos canyon upstream of all major diverters on the Conejos River. Water is <br />diverted under several small rights upstream of the Mogote Gage and at Platoro. <br />Two additional stream flow gages on the Rio San Antonio near Ortiz (ID No. 8247500) and the <br />Rio Los Pinos near Ortiz (ID No. 8248000) are also used in Compact and water right <br />administration as Index Gages. The total "Index Flow" determined for the Conejos River is the <br />sum of the flows of these two gages and the Conejos River at Mogote gage. <br />Other gages utilized by District Commissioners include Conejos River below Platoro Reservoir <br />(ID No. 8245000), Conejos River at Las Sauces (ID No. 8249000), Norton Drain North Branch <br />(NORDLSCO), Norton Drain south branch (NORDSCCO), Rio San Antonio near Ortiz (ID No. <br />8247500)and Rio Los Pinos near Ortiz (ID No. 8248000). Inflows to Platoro Reservoir are not <br />measured although they are estimated based on the downstream gage and changes in storage <br />content. The gage located on the Rio San Antonio near the confluence with the Conejos River <br />(ID No. 8248500) is reported to be unreliable due to flooding and backwater effects. The Las <br />Sauces gages (there is a split channel on the Conejos, hence two measurement points) are the <br />points used to measure water deliveries made to the New Mexico State line ("Compact <br />deliveries") and credited to the Conejos system. Two additional gages were recently installed on <br />the north and south channels of the Conejos just below the point where they split. Several larger <br />canal and drainage ditch systems are continually monitored. In addition, stage (contents) are <br />recorded on a daily basis for Platoro Reservoir. <br />C:Acdss\D22_Mem.doc District 22 Interview July 2, 1999 -Page 2 of 9 <br />