<br />Metropolitan Water Supply Investigation
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<br />Table of Contents
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<br />3.1.4,5. Denver Basin (Nontributary) GroUndwater ....................,.........,...............,.... 27
<br />3.1.4.6. Water Conservation.............,..,.........,..................,.................,..,.....,........".... 27
<br />3.1.5. Existing Conditions ..'....,.....................,....................,........................................... 28
<br />3,1,5,1. Denver Central Sub-Region..................,.........,...,.......,...,...,..........,............... 28
<br />3,1,5,2, South Metro Sub-Region........................,..,..,........................,.....,................. 31
<br />3,1.53. City of Aurora.,......................,.......,...........,........,..........................................31
<br />3.1.5.4. Northeast Metro Sub-Region,..........,....,...............,..:....,......,...........,............. 32
<br />3.1.5.5. Northwest Metro Sub-Region......,.................,.,........,..................................., 33
<br />3,1.6. Future Conditions .....,.....................................,..........................................,........., 33
<br />3,1,6.1, Denver Central Sub-Region........,..............,..........................................,....,.., 36
<br />3.1.6.2. South Metro Sub-Region.....,.............................,..,....,......,................,........... 37
<br />3.1.6.3. City of Aurora.............,.........................,..........,.........,................................... 37
<br />3,1,6.4. Northeast Metro Sub-Region....,..........:...............................,...,..................... 37
<br />3,1,6.5. Northwest Metro Sub-Region,.........,..........,.................................................. 38
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<br />3,2, Water Supply Opportunities ..............,......,......,.............,...............,..............................38
<br />3.2.1, Conjunctive Use ............'...................................................................................... 38
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<br />3 .2.1.1, Background,.,........"....,..;...........................................................'.....,..........,.. 38
<br />3.2.1.2. Conceptual Description of Conjunctive Use ...................':............,............... 40
<br />3.2.1.3. Surface Water Availability ..............................,.............................................42
<br />3.2.1.4. Groundwater and Aquifer Availability ...........,...........,.,..........................,..... 48
<br />3.2,1.5. Analytical Approach,..,..."....,...............".......,...,.....".,.,............."............,.... 53
<br />3.2.1,6. Results of Conjunctive Use Investigations...........................................,......., 54
<br />3.2.1.7. Issues and Concerns................,....,..,.............................................................. 59
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<br />3.2.2. Effluent Management ,...."",....',..."..",.."..,..""..'......,.."..,...".....,...,...,.,..".,....,...68
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<br />3.2.2.1. Backgroimd...,.."..........;,..."..."..,..,."..,..",.............,...,...,..".."......"".,..,....".. 68
<br />3 .2.2.2. Conceptual Definitions."..",...,....""".,..."".,;...,.....""....,...,...,......,.,....".,."" 68
<br />3.2.2.3, Analytical Approach....."..",.........,..".......,...,......,...,.,.....,..,..,.,..,........,....,.", 70
<br />3.2.2.4. Results of Effluerit Management Investigations........................................,... 73
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<br />3,2.2.5. Issues and Concerns,...,..",.",..",........,..,...."....,."..,..,.,.,...,...,...,...,....,..,.,....., 86
<br />3.2.3. Interruptible Supply Arrangements with Agriculture........................................... 89
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<br />3 .23,1, Background",....",.......,...,.....".."..",..".."..."....,.,..".,......."...........",.....,....,.. 89
<br />3.2.3 .2. Conceptual Definitions ...',....",...,.......,..'.,...,.........,.......,...,.......,....".....,.".,.. 90
<br />3.23.3. Sources of Water Supplies,...",..",..,...,.."....,....,..,.",.,...,..."..".."..."...,....,.." 94
<br />3 .2.3.4. Information Development",..",..",....."..",...,.....,.,..".....,..."......,"....,.."....,." 95
<br />3.2.3.5. PurchaselLeaseback Arrangements .......................,..,..........................,......... 99
<br />3.2.3.6. Conditions for Successful Arrangements ...........,...............,.......................'.. 99
<br />3,23.7. Specific Contract Terms....,..,........................,...........................,................, 102
<br />3,23,8. Other Contractual and Procedural Considerations .....................'...'............ 103
<br />3,23,9, Supply Source Considerations,..,...........................................,..................... 104
<br />3,23,10. Economic Considerations ............................,.............,................................' 104
<br />3,23.11. South Platte River Basin Supply Potential..............,..........,...........,...,......., 106
<br />3.2.3,12, Issues and Concerns.....................,............,..,............................,........,......... 108
<br />3.2.4, Systems Integration ,....,....................................'..................,......,............'.......... 110
<br />3.2.4,1, Conceptual Definitions...,...,..,..................................................................... 110
<br />3.2.4.2, Information DevelopmenL........,............,..............................,......,....,........ III
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<br />Prepared for the Colorado Water Conservation Board, Colorado Department ofNaturaJ Resources by
<br />Hydrosphere Resource Consultants, 1002 Walnut Street., Suite 200, Boulder, CO 80302
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