MetroSouthPlatteInterimBasinWaterSupplyNeedsReport ‎(2)‎

• Basin Roundtable: South Platte
• Additional Roundtables: Metro
• Title: Water Supply & Needs Report for the South Platte and Metro Basins
• Date: 6/1/2006
• Author: CDM, CWCB, DNR
• Basin Roundtables - Doc Type: Needs Assessment Documents

Section 1
Introduction

South Platte
Basin and
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1.1 Preface

This report serves as an interim deliverable to the
Interbasin Compact Process Basin Roundtables for both
the Metro Roundtable and the South Platte Basin
Roundtable. The Department of Natural Resources
(DNR) and the Colorado Water Conservation Board
(CWCB) will be working with both Roundtables to
develop their basinwide water needs assessments.

This report currently relies on the data developed as part
of the Statewide Water Supply Initiative (SWSI). The
data collected for SWSI to determine consumptive and
nonconsumptive uses, supply availability, and options for
alternatives was done so on a county level. Therefore,
the following entire counties will be used to represent the
Metro Roundtable in this report-Adams, Arapahoe,
Denver, Douglas, Elbert, and Jefferson. These counties
are labeled in this report as the "Denver/ South Metro
Counties."

The remaining area of the South Platte Basin will be
defined as the "South Platte Basin excluding the
Denver/South Metro Counties." Since these boundaries
do not exactly match the boundaries delineated by
Colorado for the 21 st Century Act, which defined the
Metro Roundtable, this report is considered interim.
Figures 1-1 and 1-2 display the Metro Roundtable and
the area defined as the Denver/South Metro Counties.

This report relies on data generated in SWSI. This data
was readily available at the county level for the following
report sections:

. Section 2: Statewide Demographic, Economic, and
Social Setting

. Section 5: Consumptive Water Supply Needs in the
South Platte Basin and Denver/South Metro Counties

. Section 8: Options for the South Platte Basin and
Denver/South Metro Counties

For all other report sections, data was available at the
basin level or statewide level.

S:\1177\BASIN REPORTSlSOUTH PLATTE\S1_S0UTH PLATTE. DOC

This report will serve as a basis for creating the
Roundtable's needs assessments-one for the South
Platte Basin Roundtable and another one for the Metro
Roundtable. In order to do that, several key issues need
resolution by the two Roundtables:

Consumptive Use (Section 5)

Municipal and Industrial
. Population projections and how they relate to service
area boundaries for specifically the following counties:
Adams, Arapahoe, Broomfield, Douglas, Elbert,
Jefferson, and Teller and the following specific
jurisdictions that are bifurcated by the Metro
Roundtable boundary: Arvada, Aurora, Denver,
Brighton, Broomfield, and Lochbuie.

. Differences between state demographer data and
individual water provider data.

. Differences between demand data at county level,
Basin Roundtable level, and water provider level.

Agricultural
. Irrigated acreage estimates and how they related to
the Metro Roundtable boundary.

Nonconsumptive Uses (Section 6)

. Decide if it is necessary to separate out
environmental and recreational needs between the
South Platte Basin Roundtable and the Metro
Roundtable boundaries.

Supply Availability (Section 7)
. How to consider transbasin imported water in terms of
needs assessment.

Options for Alternatives (Sections 8 and 9)

. Decide on the level of detail required for these options
within the Metro Roundtable boundary and South
Platte Basin.

Once this report is reviewed by each Basin Roundtable
and the above issues are discussed, two Needs
Assessment Reports will be developed. This interim
report needs review and feedback by each Basin
Roundtable with direction from the Roundtables on the
above issues separate Basin Reports can be developed.

CONI

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NATURAL
RESOURCES

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