Water Management Study: Phase 1 Report

• File Number: 8461.100
• Description: Adaptive Management Workgroup
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 1/29/2008
• Author: Boyle Engineering, Ecological Resource Consultants, BBC Research & Consulting, Lytle Water Solutions
• Title: Water Management Study: Phase 1 Report
• Water Supply Pro - Doc Type: Report/Study

LIST OF TABLES
Table 2-1 Interview Participants.......
..........................4
Table 3-1 Average Yields ..........................................................................................................6
Table 3-2 Estimated Flow at NWS Flood Stage for Platte River Reaches ................................9
Table 3-3 Table of System Capacities .....................................................................................14
Table 3-4 Classification of Water Years Based on Average Annual Flow at Overton,
Nebraska (1947-2006) .................................................................................................16
Table 3-5 Travel Times on the Platte River - Keystone to Overton .......................................18
Table 3-6 Daily Loss Factor Estimates ....................................................................................20
Table 3-7 Remaining Capacity for Program Water for Average, Wet, and Dry Years........... 23
Table 3-8 Resulting Peak Flows for Target 5,000 cfs Case I and Case II ...............................31
Table 3-9 Resulting Peak Flows for Target 800 cfs Case I and Case II ..................................32
Table 4-1 Project Summary .....................................................................................................53
LIST OF FIGURES
Figure 1-1 Study Area and Locations ...................................................................End of Report
Figure 3-1 Classification of Water Years Based on Average Annual Flow at Overton,
Nebraska (1947-2006) ................................................................................................ 15
Figure 3-2 Hydrographs for 5,000 cfs Program Water Targets .............................................. 36
APPENDICES
Appendix 1: WMS Interview Meeting Notes
Appendix 2: WMC Loss Model Update Technical Memorandum and Tables
Appendix 3: Routing Tool Analysis Results
930wLE Page iii
January 29, 2008
PRRIP - Draft Water Management Study, Phase I