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Lemon Reservoir (39,030 acre-feet - 25,740 acre-feet) is used to make up seepage and <br />evaporation losses, transportation losses and carryover to provide for dry year conditions. <br />According to the division engineer and water commissioner, supplemental irrigation water <br />from Lemon Reservoir is generally required when the natural flow of the river drops below <br />about 200 cfs. There are approximately 7 major irrigation structures on the Florida River, <br />cumulatively decreed for over 200 cfs, which represent the structures that deliver the majority <br />of the project water supplies from the reservoir. These structures are separated into the A <br />Group and the B Group. The A Group consists of those ditches that divert from the Florida <br />River and irrigate lands immediately adjacent to the stream. The major structures in this group <br />are listed below. Cumulatively, these structures are allocated 1,520 acre-feet of project water <br />annually (5.9 percent of the total project supply). The pro rata allocation of prof ect water to <br />each ditch was based on the irrigated acreage determined for the CRDSS. <br />Group A Diversion Structures <br />Group A WDID project Allocation <br /> (acre-feet) <br />Harris Patterson Ditch 301003 183 <br />Pioneer Ditch 301019 547 <br />McCluer-Murray Ditch 301009 198 <br />Banks-Tyner Ditch 301033 410 <br />Tyner-East Side Ditch 301243 182 <br />Total 1,520 <br />Group B is made up of only two major ditch systems; (1) the Florida Farmers Ditch, including <br />the Florida Farmers "Co-op" and (2) the Florida Canal, including its enlargement. The <br />cumulative allocation of prof ect water under these two systems is 24,220 acre-feet per year <br />(94.1 percent of the total project supply). The pro rata allocation of prof ect water to the two <br />systems was based on the irrigated acreage determined for the CRDSS. <br />Group B Diversion Structures <br />Group B WDID project Allocation <br />(acre-feet) <br />Florida Canal 301013 17,440 <br />Florida Farmers Ditch 301011 6,780 <br />Total 24,220 <br />Because the prof ect water is owned by individuals rather than by ditch companies, it is <br />difficult to identify the allocations specific to the individual ditches in Group A. Accordingly, <br />the allocations assigned to the ditches in Group A and to the two ditches in Group B are <br />based on information obtained from the Florida Water Conservancy District and on the <br />irrigated acreage under each of the ditch systems, as determined from the CRDSS mapping <br />efforts. The allocation process is complicated by the fact that individuals with lands under the <br />Florida Farmers Co-op Ditch have their own specified allocations, as do the individuals that <br />receive water from the Florida Canal Enlargement. Also, these ditches commingle and it is <br />difficult to separate the irrigated acreage. Acreage and demands associated with the Group B <br />San Juan & Dolores River Basin Information 2-17 <br />