PUB00094

• Year: 1998
• Title: Denver Basin and South Platte River Basin Technical Study: Technical Addendum 1 and 2
• Author: Special Water Committee
• Description: Technical addendums for the report
• Publications - Doc Type: Tech Report

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Table of Contents

March 21. 1998
Page i

TABLE OF CONTENTS

CHAPTER 1: SOUTH PLA TIE BASIN INVENTORY
1.1 Surface Water Resources........................ ............... ................. 1-1
1.1.2 Natural Flow5................................................. ................. 1-4
1.1.3 Historical Flows................................................................ ............. ..............................1-8

1.1.4 Future Flows ..................................................... ..................................................... ... ..... 1-8
1.1.5 Reusable Flows............................................................................................................ 1-13
1.1.6 Undeveloped Flows........................................... .............................................. ............. 1-14
1.2 Groundwater Production Estimates from the Denver Basin Aquifers.................................... 1-15
1.2.1 Municipal Use............................................................................................................... 1-15
1.2.2 Commercial and Industrial Use..................................................... .................. ........... 1-15
1.2.3 Irrigation Use............ .......... ....................................... ................................................... 1-16
1.2.4 Domestic and Livestock Use........................................................................................ 1-16
1.2.5 Household Use Only .................................................................................................... 1-16

1.2.6 Summary .......,....................................................................................... ....................... 1-16
1.3 Surface Water Return Flow and Reuse Estimates from the Denver Basin Aquifers ............. 1-17

CHAPTER 2: THE EFFECT OF EXISTING EFFICIENCIES AND CONJUNCTIVE MANAGEMENT OF
SURFACE WATER AND GROUNDWATER RESOURCES ON FUTURE SUPPLY AND ON LOCAL
REGIONAL EXISTING WATER RIGHTS ABOVE THE HENDERSON GAUGE

2.1 Inventory of Existing Water Efficiency Practices.................................................................... 2-1
2.1.1 Water-Efficient Fixtures And Appliances........................................................................ 2-2
2.1.2 Low Water-use Landscaping.......................................................................................... 2-3
2.1.3 Irrigation efficiency Measures ........................................................................................ 2-4
2.1.4 Leak Detection AND Repair........................................................................................... 2-4
2.1.5 Education Programs....................................................................................................... 2-4
2.1.6 Customer Water-Use Audits .......................................................................................... 2-4
2.1.7 Water Use Restrictions .................................................................................................. 2-5

2.1.8 Metering ......................................................................................................................... 2-5
2.1.9 Pricing Incentives ........................................................................................................... 2~

2.2 Water Supply Effects of Existing and Future Efficiency Practices ......................................... 2-7

2.3 Water Supply Effects of Existing and Future Conjunctive Management Practices ..............2-10
2.3.1 Existing Conjunctive Management Praclices............................................................... 2-11
2.3.2 Future Conjunctive Management................................................................................. 2-12

2.4 Impacts on South Platte River Flows at the Henderson Gage and Existing Water Rights.. 2-15

2.5 Summary of Results...,..,......................................................................................................2-20

CHAPTER 3: EFFECT OF EXISTING WATER REUSE ON FUTURE WATER SUPPLY AND ON
EXISTING WATER RIGHTS

3.1 Background .... .......... ........ ............. ....... ........................ ..... .......... .................................... ....... 3-1

3.2 Reusable return flows............................................................................................................. 3-2

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