FLOOD02847

• County: Statewide
• Community: State
• Basin: Statewide
• Title: Metropolitan Water Supply Investigation Final Report
• Date: 1/1/1999
• Prepared For: CWCB
• Prepared By: Hydrosphere Resource Consultants, Inc.
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

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Metropolitan Water Supply Investigation

Table of Contents

LIST OF TABLES

Table 1: Denver Water Contract Obligations .......................................................................... 22
Table 2: Existing Municipal Water Use in the South Platte Basin (1996 Conditions) ...........28
Table 3: Future Water Supply Plans for South Platte Basin Municipal Water Providers....... 33
Table 4: Results of No-Borrowing, No-Recharge Scenarios.............;..................................... 55
Table 5: Results of With-Borrowing Scenario5........................................................................ 57
Table 6: Metro Denver Area Reusable Supplies and Return Flows (Acre-Feet Per Year) ....73
Table 7: Summary of Effluent Reuse Plans (Acre-Feet Per year)........................................... 78
Table 8: Results of Phase III Exchange Potential Analysis..................................................... 82
Table 9: Summary of Interruptible Supply Arrangement Studies and Implementations ........ 94
Table 10 (Maximum Option Price Which A Municipality Can Pay and
Still Benefit Over Purchasing the Water Right) (1988 $/AF) ........................................104
Table 11: Estimate of Gross Supply Potential for Interruptible Supply

Arrangements by Sub-Basin ........................................................................................... 106

LIST OF FIGURES

Figure I: South Platte River Basin and its Three Water Service Regions ..............................15
Figure 2: Major Service Areas of Major Water Providers in the Metro Denver Area............2l
Figure 3: Existing Municipal & Industrial Water Supply, South Platte

Basin of Colorado .............................................................................................................24
Figure 4: Denver Water's Near-Term Strategy ....................................................................... 35
Figure 5: Denver's Unused Divertible Supplies South Platte
and Blue Rivers Near-Term Scenario...............................................................................43
Figure 6: Available Flows, South Platte River Below Denver................................................46
Figure 7: Map of Denver Basin Aquifers ................................................................................48
Figure 8: Map of Beebe Draw Aquifer.................................................................................... 50
Figure 9: Blue River Below Dillon Reservoir .........................................................................59
Figure 10: Conjunctive Use Scenario 9 Effects on Dillon Reservoir Contents....................... 61
Figure 11: Conjunctive Use Scenario 9 Effects on Cheesman / II Mile

Reservoir Contents ........................ ................................................ ................................... 61

Figure 12: Conjunctive Use Scenario 10 Effects on Dillon Reservoir Contents..................... 62
Figure 13: Conjunctive Use Scenario 10 Effects on Cheesman / II Mile

Reservoir Contents ...........................................................................................................62

Figure 14: Relationships Between Various Temporary Transfer Arrangements ....................91
Figure 15: Sub-Basins of the Northern Front Range Region ................................................105
Figure 16: Future Mix of Water Management Strategies, Metro Denver Area..................... 133-

Prepared for the Colorado Water Conservation Board, Colorado Depar1ment ofNalllnll Resources by
Hydrosphere Resource Consultants, 1002 Walnut street. Sui.e 200, Boulder, CO 80302