WSP04188

• File Number: 8449.800.A
• Description: Metro Study SB 96-74
• State: CO
• Basin: South Platte
• Date: 4/1/1998
• Author: CWCB
• Title: Denver Basin and South Platte River Basin Technical Study, Senate Bill 96-074
• Water Supply Pro - Doc Type: Publication

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of Aurora, City of Boulder, the Denver Water Department, and the Centennial
Water & Sanitation District. The conservation measures and practices employed
in these communities are a good indication of trends throughout the metropolitan
area, While the survey identified the conservation measures described below as
practices that are currently employed by many water suppliers or are likely to be
implemented in the future, the manner in which these practices are implemented
varies substantially between different water suppliers,

Chapter 4 focuses on exploring water conservation and conjunctive use in terms
of their long-term water supply potential and their effects on existing water rights
above the Henderson Gage, Hydrosphere has approached this task through the
following steps:

1. An inventory of existing water efficiency measures and practices,

2. An inventory of existing conjunctive management practices,

3, Development of quantitative estimates of the water supply effects of
existing and projected future water efficiency measures and practices,

4, Development of quantitative estimates of the water supply effects of
existing and estimated future conjunctive management practices.

5. An analysis of the impacts associated with efficiency and conjunctive
management practices on South Platte River flows at the Henderson
gage,

6, An evaluation of the combined effects of existing and future water
efficiency and conjunctive management practices on existing water rights
above the Henderson Gage.

Key points:
1. Water conservation is an important aspect of water supply planning.
Hydrosphere's survey shows that water conservation has saved 100,800
acre-feet of water for the metro area water providers at current use levels.
( see Table 2-3, Chap!. 2, Technical Addendum No.1)
2. Little conjunctive use is practiced currently in the Denver metro area with
most being done by Centennial Water and Sanitation District (654 aere-
feet in 1996)
3, Future conjunctive use has significant potential to reduce Denver Basin
ground water pumping through the storage above and below ground of
surplus surface water flows, Douglas County water providers are more
fully evaluating this potential,

Chapter 5 - Effect of Existing Water Reuse on Future Water Supply and on
Existing Water Rights (Technical Addendum No, 1, Chapter 3)

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