This is a digital document from the collections of the Wyoming Water Resources Data System (WRDS) Library. For additional information about this document and the document conversion process, please contact WRDS at [email protected] and include the phrase “Digital Documents” in your subject heading. To view other documents please visit the WRDS Library online at: http://library.wrds.uwyo.edu Mailing Address: Water Resources Data System University of Wyoming, Dept 3943 1000 E University Avenue Laramie, WY 82071 Physical Address: Wyoming Hall, Room 249 University of Wyoming Laramie, WY 82071 Phone: (307) 766-6651 Fax: (307) 766-3785 Funding for WRDS and the creation of this electronic document was provided by the Wyoming Water Development Commission (http://wwdc.state.wy.us) BBBAAAGGGGGGSSS WWWAAATTTEEERRR &&& RRRAAAWWW WWWAAATTTEEERRR SSSUUUPPPPPPLLLYYY LLLEEEVVVEEELLL IIIIII RRREEEPPPOOORRRTTT BBBaaaggggggsss,,, WWWyyyooommmiiinnnggg BAGGS WATER & RAW WATER SUPPLY LEVEL II REPORT Prepared for: TOWN OF BAGGS P.O. Box 300 Baggs, WY 82321 WYOMING WATER DEVELOPMENT COMMISSION 6290 Yellowtail Road Cheyenne, WY 82002 Prepared by: DONNELL & ALLRED, INC. 908 Big Horn Avenue Worland, WY 82401 In association with: LIDSTONE AND ASSOCIATES, INC. 4025 Automation Way, Bldg E Fort Collins, CO 80525 November 1,2004 TABLE OF CONTENTS 1.0 INTRODUCTION............................................................................................................. 1 1.1 History and Project Background........................................................................... 1 1.2 Authorization and Purpose.................................................................................... 2 2.0 SUMMARY OF EXISTING SYSTEM........................................................................... 3 2.1 Water System Overview.......................................................................................... 3 2.2 Water Supply and Treatment................................................................................. 3 2.3 Storage and Transmission System......................................................................... 3 2.4 Distribution System................................................................................................ 5 2.5 Land Use................................................................................................................. 6 3.0 WATER DEMAND .......................................................................................................... 8 3.1 Historical Use......................................................................................................... 8 3.2 Current Water Demand ......................................................................................... 8 3.3 Current Billing Rates............................................................................................. 9 3.4 Conservation and Future Demand...................................................................... 10 4.0 STORAGE AND TRANSMISSION ALTERNATIVES............................................. 12 4.1 Isolated Transmission Line ................................................................................. 12 4.2 Increased Storage Alternatives............................................................................ 16 5.0 RAW WATER IRRIGATION SYSTEM ..................................................................... 19 5.1 Background Information..................................................................................... 19 5.2 Raw Water Source................................................................................................ 22 5.3 Raw Water System Capacity ................................................................................ 22 5.4 Raw Water System Components.......................................................................... 23 5.5 Raw Water Irrigation System Alternatives.......................................................... 26 5.6 Raw Water System Cost Estimate........................................................................ 26 6.0 REGIONALIZATION ................................................................................................... 30 7.0 PERMITTING AND ENVIRONMENTAL ISSUES .................................................. 35 7.1 Permitting and Easements................................................................................... 35 7.2 Environmental Aspects of Alternatives ............................................................... 35 8.0 ECONOMIC ANALYSIS AND ABILITY TO PAY................................................... 38 8.1 Financing Analysis for the Transmission Line .................................................. 38 8.2 Financing Analysis for the Storage Tank Alternatives ...................................... 39 8.3 Financing Analysis for the Raw Water Irrigation System ................................. 40 8.4 Financing Analysis for the Regional Water System........................................... 41 9.0 RECOMMENDATIONS................................................................................................ 43 10.0 REFERENCES................................................................................................................ 45 FIGURES AND TABLES Figure 1.1 - Town of Baggs........................................................................................................... 1 Figure 1.2 - New Infiltration Gallery .......................................................................................... 1 Figure 2.1 - Existing Water System............................................................................................. 4 Figure 3.1 - Average Daily Flows................................................................................................. 8 Figure 3.2 - Average Flows (gpm) ............................................................................................... 9 Figure 3.3 - U.S. Census Figures for Baggs .............................................................................. 10 Figure 4.1 - Dedicated Transmission Line................................................................................ 13 Table 4.1 - Transmission Line Cost Estimate........................................................................... 15 Figure 4.2 - Baggs Water Storage Tank.................................................................................... 16 Table 4.2 - Storage Requirement Summary............................................................................. 17 Table 4.3 - Cost Estimate for Alternative 1 .............................................................................. 18 Table 4.4 - Cost Estimate for Alternative 2 .............................................................................. 18 Figure 5.2 - Existing Raw Water Irrigation System ................................................................ 19 Figure 5.1a - Raw Water Irrigation System North Half ......................................................... 20 Figure 5.1b - Raw Water Irrigation System South Half ......................................................... 21 Figure 5.3 - Raw Water Holding Pond...................................................................................... 25 Table 5.1 - Raw Water Irrigation System Alternative 1 Cost Estimate ................................ 27 Table 5.2 - Raw Water Irrigation System Alternative 2 Cost Estimate ................................ 28 Table 6.1 - Service Area Information........................................................................................ 31 Figure 6.1 - Regional Water System Conceptual Plan ............................................................ 32 Table 6.2 - Conceptual Cost Estimate for the Regional System ............................................. 33 Table 8.1 - Financing for Transmission Line Improvements ................................................. 39 Table 8.2 - Financing for Storage Tank Upgrade - Alternative 1 .......................................... 40 Table 8.3 - Financing for Storage Tank Upgrade - Alternative 2 .......................................... 40 Table 8.4 - Financing for the Raw Water Irrigation System Alternative 1........................... 41 Table 8.5 - Financing for the Raw Water Irrigation System Alternative 2........................... 41 Table 8.6 - Financing for the Regional Water System............................................................. 42 APPENDICES Appendix A - Out-of-Town Water User Agreement Appendix B - Preliminary Engineering Report for Water Treatment Plant Expansion Appendix C - EPANET and WaterCAD Model Results Appendix D – Raw Water Model Results 1.0 INTRODUCTION 1.1 History and Project Background The Town of Baggs is located in the Little Snake River Valley in Carbon County, approximately 55 miles southwest of Rawlins. Baggs’ municipal water system is having an increasingly difficult time keeping up with increased demands brought on by a sudden population growth and the ongoing drought. Much of the distribution piping is sixty years old and consists of a mixture of ductile iron, asbestos cement (AC) and PVC, generally 4 and 6 inches in diameter, which is not large enough for effective fire suppression. The Town is also having problems with frequent low water pressure, increasing water losses and stagnant water in their tank, particularly during the summer months. The population growth in Baggs is Figure 1.1 - Town of Baggs primarily due to coal bed methane (CBM) activity in the area. The 2000 census reported a