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<br />001074 <br /> <br />Operation Plan for the Proposed Long Hollow Reservoir-Preliminary Draft, March 17, 2004 <br /> <br />period, the average amount of water stored (Compact Pool plus District Pool) in LHR was 3,540 <br />AF for Scenario 1 and 2,962 AF for Scenario 2 (see Figure 8). <br /> <br />4.3 Modeled Allocations <br /> <br />When New Mexico called for water in the spring, the allocation model distributed water to the <br />State Line gauge and Colorado ditches according to water right priority. The highest (most <br />senior) priority was assigned to New Mexico. Releases from LHR were used to meet the <br />Compact demands at the State Line Gauge and Colorado ditches divert native flows in the La <br />Plata River according to priority and by exchange. Colorado ditch diversions made under this <br />exchange are defined as incremental diversions. Native flows from the La Plata River basin that <br />could not be exchanged to Colorado ditches were used to meet Compact demands. Otherwise, <br />Compact deliveries were provided from the District Pool in LHR. <br /> <br />Incremental agricultural diversions exchanged are presented by year and an average for the 14- <br />year study period was calculated using the model (see Table 3). Average incremental diversions <br />for each ditch that receives exchange water are shown in Table 4. This exchange and reservoir <br />releases are discussed later under reservoir operations. <br /> <br />5.0 IRRIGATED LAND <br /> <br />Lands irrigated by the 18 Colorado ditches that receive incremental diversions are shown in <br />Figure 7. Irrigated lands are located in Cherry Creek, Hay Gulch, and Red Mesa. More than _ <br />acres of land are available for irrigation by the ditches if there is sufficient water supply. <br />However, Colorado's portion of La Plata River flows is insufficient to provide a full irrigation <br />supply to all available lands due to the timing and amount of stream flows in all years except <br />very wet 'years. The four most senior ditches (Hay Gulch, La Plata Irrigating Ditch, Big Stick, <br />and La Plata & Cherry Creek Ditch) have decreed water rights totaling 74.25 cfs. Accounting for <br />Compact obligation, approximately 150 cfs is needed at the Hesperus Gauge to fully satisfy these <br /> <br />991-077.000 <br />March 2004 <br /> <br />Wright Water Engineers, Inc. <br /> <br />Page 5 <br />