BOARD02036

• Board Meeting Date: 9/24/2001
• Description: CF Section - Investments - South Platte River Decision Support System Year 2
• Board Meetings - Doc Type: Memo

Agenda item
September 24-25, 2001 meeting
Page 9 of 15

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ALTERNATIVE 2 BENEFITS

Development of SPDSS tools and data at the Alternative 2 level of effort, which includes all
components and data from Alternative 1, will give the CWCB, DWR and water users more data
and robust and flexible tools to use in the development, management and administration of
Colorado's water resources.

Data

The data required for SPDSS implementation will serve two uses: (I) as basic information for the
CWCB, DWR and water users to fulfill their own specific needs, and (2) as model input and
calibration information for use by the State and water Users, In this way, benefits to SPDSS
users, including both water users and the State, will begin immediately after data collection
begins, Alternative 2 will create more complete and accurate database records that will be
beneficial to CWCB, DWB and water users. In addition, Alternative 2 will provide tools for
viewing, manipulating and analyzing data, Tools developed in Alternative 2 will offer more
flexibility to users with different information and analysis needs, The following lists some of the
data and data tools that will be produced under Alternative 2:

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. More complete and more accurate streamflow, diversion, transmountain diversion,
reservoir and water rights data in HydroBase that can be easily accessed and viewed

. Access to real-time provisional streamflow and diversion data with an upgraded
administration tool (CWRAT) which will allow data input to spreadsheets

. Provide ready access to the current year's real-time data

. Two new stream gages on the South Platte River at Julesburg and Atwood

. A two-year point-flow stream gaging program on the mainstem of the Lower South Platte
River to better understand gains and losses on deliveries of water.

. A two-year point-flow stream gaging program in thin alluvium valleys overlying the
Denver Basin aquifer per SB 96-74 recommendations (used in coordination with
groundwater component to evaluate the accuracy and validity of groundwater models),

. Eight new satellite monitoring systems installed at key diversion points in the basin
including six diversions and two transmountain diversions

. Ability to determine calling water rights on mainstem South Platte River and tributaries

. Computer generated straight line diagrams showing locations and distances of the stream
system and diversions

. An expanded database that enhances the ability to document augmentation plans and
instream flow data

. Distribution and updates of the State's database, HydroBase, via compact disc (CD)

. Faster and easier data access via the Internet

. Documentation directed to new users in order to make data access easier

. hnplementation of training programs to facilitate access to data by water users

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