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<br />TABLE OF CONTENTS (Cont.) <br /> <br />Section <br /> <br />Page <br /> <br />4.0 STUDY AREA DESCRIPTION ....,................................ 4-1 <br /> <br />4,1 Physical Setting . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . .. 4-1 <br /> <br />4.2 Economic and Demographic Information ............................ 4-1 <br />4,2.1 Population and Median Age ............................... 4-1 <br /> <br />4.2,2 Income ............................................ 4-4 <br /> <br />4.2.3 Foreclosure Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-5 <br />4.2.4 Tourism and Recreation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-6 <br /> <br />4.2,5 Retail Sales ..................................,...... 4-7 <br /> <br />4.2.6 Employment.....................................,... 4-7 <br /> <br />--" <br /> <br />5.0 WATER DEMANDS . . . . . . , . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-1 <br /> <br />5.1 General...........................,..................... 5-1 <br /> <br />5.2 Monthly Water Use ........,................................ 5-3 <br /> <br />6.0 WATER SUPPLIES. . . . . . . . . . . , . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . .. 6-1 <br /> <br />6,1 Streamflow Analyses . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . .. 6-4 <br /> <br />6,2 Water Rights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-12 <br /> <br />6,3 Analysis of Expected Yield. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-18 <br />6.3.1 Dutton Ditch Water Availability ............................ 6-19 <br />6.3.2 System Losses and Downstream Water Requirements ............... 6-31 <br />6.3.3 Modeling of System Operation. , . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-40 <br /> <br />7.0 Water Quality . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . ,. 7-1 <br /> <br />8.0 Proposed Plan ......................,......................... 8-1 <br /> <br />8.1 Description of Proposed Plan ,.....'............................. 8-1 <br />8.2 Hidden Valley Reservoir ..."..............................,.. 8-2 <br />8.2,} Preliminary Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , , .. 8-2 <br />8.2.2 Cost Estimate ....................................... 8-10 <br />8,3 Stevens Lake Dam Enlargement. . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . .. 8-13 <br />8.3.1 Preliminary Design . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . .. 8-13 <br />8.3.2 Cost Estimate .....,................... . . . . . . . . . . . . .. 8-21 <br /> <br />9,0 Conclusions and Recommendations ,.................................. 9-1 <br /> <br />Appendix A - Letter of Intent Regarding Development of the Hidden Valley <br />Reservoir Project <br /> <br />Appendix B - Flow Measurements on Hidden Valley Creek <br /> <br />Appendix C - Estimated Flows of Turkey Creek and Four Mile Creek <br /> <br />Appendix D - Dutton Ditch Diversion Records <br /> <br />ii <br /> <br />S9.5\PAOOSA\TOC <br />10127/rn IDIIl <br />