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How the System Works Where the Water Comes From and Where It Goes

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'Historically intermittent, the South Platte is today a ... Snow Geese over Bill Condon's Ponds (Crook) New SPMAP Tools: Habitat Potential Assessment Tool ... – PowerPoint PPT presentation

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Title: How the System Works Where the Water Comes From and Where It Goes


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How the System WorksWhere the Water Comes From
and Where It Goes
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The South Platte River Basin
TransbasinDiversions 1. Adams Tunnel 231,060
af 2. Roberts Tunnel 68,767 af 3. Moffat
Tunnel 52,912 af
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Population
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Land Uses
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Historically intermittent, the South Platte is
today a perennial river, with a much more
predictable flow than 130 years ago. (Silkensen
1992)
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The practice of irrigation, including the use of
extended distribution systems, has created
conditions which not only tend to
maintain a constant return flow, but have
apparently increased the rivers discharge ...
(Ralph Parshall, 1922)
CDOW Fish Sampling Photo June 15, 1994, near Crook
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Relationship between Groundwater and Surface Water
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Groundwater in the Lower South Platte
Main source is the Valley Fill aquifer. Which is
an alluvial aquifer made up of clay, sand and
gravel. Groundwater in the alluvium is in close
hydrologic connection with surface water in the
South Platte River.
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Calculating Depletions Met by Groundwater
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Depletions
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Total Annual Depletions
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Calculating Depletions Met by Groundwater
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Depletions 1,741 AF
Depletions 1,741 AF
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Depletions 1,741 AF
Depletions after 5 yrs 1,490 AF 10 yrs 1646 AF
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Depletions 1,741 AF
Depletions after 5 yrs 1,025 AF 10 yrs 1,409 AF
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Depletions 1,741 AF
Depletions after 5 yrs 645 AF 10 yrs
1,148 AF
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Impact of a Recharge Pond
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How Groundwater Recharge for Stream Augmentation
Works
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Depletions 1,741 AF Recharge 1,665 AF
5 YRS Depletions 1,490 AF Recharge
1,460 AF
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Well at SDF 30 and Recharge Pond at SDF 300
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Depletions 1,741 AF Recharge 1,665 AF
5 YRS Depletions 1,490 AF Recharge
1,068 AF
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Well and Recharge Pond at SDF 1000
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Depletions 1,741 AF Recharge 1,665 AF
5 YRS Depletions 645 AF Recharge
691 AF
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Management Tools
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SPMAP History
  • Colorado Water Resources Research Institute
    provided seed funding in 1995 to work withlocal
    water user groups to address their data and tool
    development needs in the Lower South Platte River
    Basin from below Denver to the state border.
  • In order to accomplish this we established an
    advisory committee.

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The South Platte Advisory Committee
  • The South Platte Advisory Committee is
    comprised of representatives from water user
    groups in the South Platte including
  • Central
  • Northern
  • SPLRG
  • GASP
  • Lower
  • State Engineers Office
  • CWRRI

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User Centered DSS Development
  • SPMAP Approach
  • User needs should drive the development of the
    DSS.
  • Develop a dynamic and collaborative process.
  • Work with a group of users and develop a set of
    needs and priorities.
  • Develop prototypes for quick turn around and work
    cooperatively with users.

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SPMAP-History
  • Committee determined that what they needed was
  • A process to easily and efficiently compute water
    use and augmentation requirements (which included
    data and models).

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SPMAP Components
  • South Platte Geographic Information Systems
    (SPGIS)
  • South Platte Consumptive Use Model (SPCU)
  • Stream Depletion Factors Model (SDFView)
  • NEW
  • Habitat Potential Assessment Tool (HPAT)
  • Recharge Potential Assessment Tool (RPAT)

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SPGIS
  • Geographic Information Systems area
    computerized database management system for
    capture, storage, retrieval, analysis, and
    display of spatial (locationally defined) data.
    (National Science Foundation)
  • GIS coverages include maps and tables of
    associated data, as well as images(e.g.
    satellite photography)

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SPGIS Software
  • SPGIS runs in ArcView.
  • Additional tools were created to update and
    customize these maps for modeling.
  • Well Tools is an extension developed for this
    project.

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SPGIS
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South Platte CU Model (SPCU)
  • Based on surface water supplies and consumptive
    use estimates, users can estimate the CU met by
    groundwater and can transfer this information to
    SDFView to determine the depletions and/or
    accretions to the river.

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Preparing a CU ModelInput File Using SPGIS
  • The user selects fields from an irrigated acreage
    theme and assigns crop types and application
    efficiencies.
  • Fields are then grouped into farms. Any wells
    that serve the farm are added.
  • Well attributes such as stream depletion factor
    and the portion of the farm served can be
    assigned.

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Preparing a CU Input File from a Database
  • The user can use either Access or dBase.
  • The user maps the fields in the database to
    corresponding model data.

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  • Surface water supplies can be assigned to a farm
    either from HydroBase or by the user.

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Main SPCU Window
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Building Scenarios
  • Scenarios can be created for forecasting
    consumptive use.
  • Scenarios can be created using any sequence of
    historical data.

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  • The model can calculate CU of groundwater. If
    the user supplies pumping records, the model can
    calculate application efficiencies of wells.

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  • Recharge from ditch conveyance loss and well loss
    can be calculated.

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  • Consumptive use for each farm is displayed in a
    spreadsheet.

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  • Results can be graphed.

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SPCU Links to SDFView
  • Groundwater consumptive use from the SPCU Model
    can be fed into SDFView.

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SDFView Calculating Stream Depletion and
Augmentation Requirements
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South Platte SDF Model
  • Based on surface water supplies and consumptive
    use estimates, managers are able to estimate
    groundwater use for individual wells.
  • This information can be used to determine the
    timing and location of out-of-priority depletions
    to the river, and therefore be able to
    efficiently and cost effectively determine
    augmentation requirements.

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Main SDF Window
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SDFView Scenarios
  • SDFView can use pumping and recharge information
    from the SPCU Model.
  • A sequence of years can be run to generate
    estimates of future pumping or recharge.

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SPMAP
  • A version of all three components of the system
    have been developed and distributed to all
    participants.
  • SPGIS, SPCU and SDF View are distributed via the
    web www.ids.colostate.edu/projects/sdfview
  • www.ids.colostate.edu/projects/spcu
  • www.ids.colostate.edu/projects/spgis

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New SPMAP Tools Habitat Potential Assessment Tool
  • Recharge ponds can be designed to provide
    habitat, especially for migratory waterfowl
  • Habitat partnership programs
  • - Partners for Fish and Wildlife- Ducks
    Unlimited- NRCS Wetlands Reserve Program

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New SPMAP Tools Habitat Potential Assessment Tool
Snow Geese over Bill Condons Ponds (Crook)
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New SPMAP Tools Habitat Potential Assessment Tool
  • Considers proximity to other habitat types
  • New coverages include
  • Recharge ponds
  • State Wildlife Areas
  • CDOW Riparian Vegetation Data
  • Existing project sites (PFW, DU, NRCS)
  • Soil Maps
  • Colorado Natural Heritage Program Element
    Occurrences and Potential Conservation Areas

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New SPMAP Tools Habitat Potential Assessment Tool
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New SPMAP Tools Habitat Potential Assessment Tool
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New SPMAP Tools Habitat Potential Assessment Tool
  • Needed to assess sites for potential to develop
    recharge ponds
  • Considers potential water sources (distance,
    uphill or downhill), soil type, and SDF
  • A site visit would be needed to confirm
    assessment findings

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New SPMAP Tools Recharge Potential Assessment
Tool
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New SPMAP Tools Recharge Potential Assessment
Tool
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Other useful data and tools include
  • Hydrobase (SEO)
  • Augmentation/Recharge Accounting (NCWCD)
  • South Platte Decision Support System (SPDSS)
    (SEO/CWCB)

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