Harris 2nd Qrt 07 Newsletter_7-26 ‎(2)‎

• Title: Interbasin Compact Process Quarterly Newsletter - 2nd Quarter 2007
• Date: 8/1/2007
• IBCC - Doc Type: Fact Sheets & Quarterly Newsletters

Ó»¬¸±¼±´±¹§
Through the SWSI process, a set of nine major
The methodology for completing the NCNA focuses
"water management objectives" were developed,
on a two step process for evaluating non-
refined, and then used to evaluate options for
consumptive needs prioritization and
addressing Colorado's fu ture water needs. These
quantification (illustrated in the figure below).
objectives represent the overarching interests in
Following provides information on the steps and
water management – they define major goals of
their components.
water users in clear, understandable terms. These
objectives should be used in decisionmaking to
Over the next several
move stakeholders towards common ground for
months, the NCNA Work Group will ask each Basin
developing future water supply alternatives.
Roundtable to review and comment on the GIS
ͬ®¿¬»¹§ º±® Ò±²ó½±²­«³°¬·ª» Ò»»¼­
coverages of environmen tal and recreational
ß­­»­­³»²¬
attributes compiled during SWSI Phase 2, as well as
to suggest development of additional, important
Each Basin Roundtable will develop a non-
GIS coverages and data laye rs specifically for their
consumptive needs assessment (NCNA) under the
basin.
Interbasin Compact Process. Participants of this
statewide work group will assist the roundtables
Once Basin Roundtables
and IBCC as this process moves forward. Following
have identified the data layers that contain
is the strategy proposed for moving forward.
important non-consumptiv e attributes for their
basins, they will establish priorities. A basin's
Ù±¿´­
priorities will be based on both local and state
The goals of this process with the Basin
information. In addition, basin roundtable members
Roundtables and NCNA Work Group are to:
will be able to consider whether and how to
prioritize a reach or area.
Identify priority areas and reaches for
environmental and recreational attributes based
on existing data
The work
group will develop criteria to help evaluate the
Identify the quantities of seasonal flows
need for quantification in priority reaches. The
necessary to maintain priority areas and reaches,
"triage" process will begin with the prioritized
to the extent possible wi th existing data, based
reaches and areas. Roundta bles will consider the
on agreed-upon methodologies
condition of the reach or ar ea as well as its existing
Outreach to interested parties about the
status or land use protection. Based on this
existence of the products of this effort so that
evaluation, the roundtable will decide if it would
parties can use the information developed in
be appropriate to perform a quantification.
other water planning efforts
The CDM
Technical Team will de velop approximately 10
templates for Colorado stream and river types
(e.g., high mountain he adwaters, ephemeral
desert washes, etc.) based on gross differences
in hydrology and function. The template would
provide a model hydrograph as well as specify
which components of the hydrograph are
important for specific ecological and recreational
attributes.
Based on the "triage" or
where priority reaches warrant site-specific
quantification, the CDM Technical Team will use
the appropriate general template from the
coarse characterization and apply it to the
specific river reach (mainstem and significant
tributaries) using existing data regarding flow
and function.
- 4 -