WSP08930

• File Number: 8407
• Description: Platte River Basin - River Basin General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 5/1/1991
• Author: NCWCD
• Title: Draft Report - Regional Water Supply Study - Part I - Report
• Water Supply Pro - Doc Type: Report/Study

.
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

~~~:~l

could be potentially used by another entity facing shortages (regionaliza-
tion or regional integration of available water supplies).

Although complete regionalization of water supplies is not realistic.
making the assumption of total regionalization provides a useful upper bound
estimate of the benefits that could be attained. For example in Study Area
1, if water-short entities could utilize surplus supplies from other
entities, there would be no shortages with available supplies, except during
a severe drought, until about the year 2015, and the shortages during a
moderate-level drought in 2020 would be reduced from about 51,000 ac-ft to
16,000 ac-ft. With regional integration across Study Areas 1 and 2,
projected shortages during a moderate-level drought in the year 2020 within
Study Area 2 could be reduced from about 16,000 ac-ft to 9,000 ac-ft. The
shortages projected for all of Study Area 3 can not be significantly offset
through regional integration of supplies. However, since 98,000 ac-ft of
the 120,000 ac-ft shortage projected for Study Area 3 is attributable to the
City of Aurora alone, some of the shortages projected for Study Area 3 could
be reduced through regional integration of water supplies with Study Areas 1
and 2.

Oeve70Daent of A7ternatives for Enhanced Use of ReQiona7 Water SUDD7ies

To develop alternatives for increasing the use efficiency of existing water
supplies on a regional basis, individual water providers were grouped into
five geographic core areas. The groupings were based on future needs,
geographic location, and the potential enhancements that could be realized
through participation in regional water supply facilities.

Future needs were characterized in terms of both raw water and treated
water. Raw water needs were quantified as described previously. The needs
for future water treatment capacity were addressed by comparing the capacity
of existing water treatment plants, based on compliance with the Safe
Drinking Water Act (SDWA), with projected future treated water demands.

-13-