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 ii

3.2.1 Denver Water............ ............... ................. ........................... .............. .. 3-3
3.2.2 City of Aurora ........................... ....................... ........3-4
3.2.3 Douglas County Water Resource Authority Providers............ ............. 3-5
3.2.4 City ofThornton........................ .................... ............. .3-5
3.2.5 City of Westminster................... .. .................... ............ ............ 3-5

3.2.6 City of Arvada........................... ................... .................................................... ............3-6
3.2.7 Other Providers .............. ......... ...... .............................. .................... ............ 3-6

3.3 Levels of Reuse........................................ ............................................................................. 3-7

3.3.1 Denver Water .................................. ............................................................ .................. 3-8

3.3.2 Aurora............................................................................................................................ 3-9
3.3.3 Douglas County Water Resource Authority Providers ................................................... 3-9

3.3.4 Thornton................................ ................................................................................. ._.... 3-10

3.3.5 Westminster............ ............ ......................................................................................... 3-10

3.3.6 Arvada ...................... ................................................... ................................................. 3-10

3.3.7 Other............................................................................................................................ 3-11

3.4 Effects on Future Water Supply ........................................................................................... 3-11
3.5 Effects on Existing Water Rights.......................................................................................... 3-12
3.6 Summary of Results.................................................................................................................16

CHAPTER 4: ESTIMATE OF THE IMPACT ON RUNOFF TO THE SOUTH PLATTE RIVER FROM
CONSTRUCTION OF IMPERVIOUS SURFACES IN THE DENVER METROPOLITAN AREA FOR THE
PERIOD 1950-1995

4.1 Total Gains.................................... ..................... .............. ........ ...... .......................................... 4-2

4.2 Pre-Development Gains................................. .................. .............. .......................................... 4-3

4.3 Urban Gain........................................... .......... ..................... ..... ................................................ 4-4

4.4 Lawn Irrigation Return Flows ................................................................................................... 4-5
4.5 Runoff from Impervious Surfaces (RIS)................................................................................... 4-6
4.6 Non-Reusable Urban Gain....................................................................................................... 4-6
4.7 Urban Gain Usability ................................................................................................................4-6
4.8 Summary of Results................................................................................................................. 4-8
4.9 Additional Studies needed .......................................................................................................4-9

CHAPTER 5: A REVIEW OF DISTRIBUTION SYSTEM INFRASTRUCTURE IN THE DENVER METRO
AREA TO IDENTIFY WAYS TO PROMOTE MAXIMUM UTILIZATION OF WATER RESOURCES
AVAILABLE TO THE SOUTH PLATTE BASIN ABOVE THE HENDERSON GAUGE

5.1. Background.............................................................................................................................. 5-1

5.2. Southern Geographic Sub-region ............................................................................................5-4
5.3. Northeast Geographical Sub-region ........................................................................................ 5-5
5.4. Northwest Geographic Sub-region ..........................................................................................5-8

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