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Using StateCU Crop Consumptive Use Model. Background Information Examples of how to use StateCU: Climate Station Scenario Wizard Walkthrough Additional Considerations Results Structure Scenario Wizard Walkthrough Additional Considerations Results. Wednesday, March 21, 2012.

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using statecu crop consumptive use model
Using StateCUCrop Consumptive Use Model
  • Background Information
  • Examples of how to use StateCU:
    • Climate Station Scenario
      • Wizard Walkthrough
      • Additional Considerations
      • Results
    • Structure Scenario
      • Wizard Walkthrough
      • Additional Considerations
      • Results

Wednesday, March 21, 2012

historic consumptive use
Historic Consumptive Use
  • Historical consumptive use (HCU) should be quantified month-by-month comparing monthly diversion records against the monthly irrigation water requirement (IWR).
    • Comparing long-term average monthly diversions and IWR will result in an incorrect historical consumptive use value. Water long months moderate water short months, which will show HCU when water was not diverted or available from soil moisture.
  • The portion of the historical diversions non-consumed are return flows.
    • Return flows can be surface flows or groundwater return flows.
    • Timing of return flows need to be considered.
  • Return flows must be maintained in time and location as part of a water rights change case.
hcu data needs
HCU Data Needs
  • Climate Data
  • ET Methods
  • Crop Characteristics and Coefficients
  • Irrigated Lands – Acreage, Crop Types, Soils
  • Etc.
colorado s decision support systems
Colorado’s Decision Support Systems

CDSS is a great starting point for HCU analyses.

  • CDSS Website
  • Suite of Tools
suite of tools
Suite of Tools
  • TSTool
  • StateDMI
  • StateCU
tstool1
TSTool
  • Time Series Tool
    • Displays
    • Manipulates
    • Analyzes
    • Write various formatted output files
  • Links to HydroBase
  • Can use external files
statedmi1
StateDMI
  • Data Management Interface (DMI)
    • Creates Modeling Input Files
      • Processes and Formats data
  • Two Modes
    • StateCU
    • StateMod
  • Links to HydroBase
statecu1
StateCU
  • Crop Consumptive Use Model
    • Practical Application
    • Software
    • Scenarios
    • Methods
statecu2
StateCU
  • Practical Application of StateCU
    • Potential Consumptive Use
    • Irrigation Water Requirement
    • Water Supply Limited Consumptive Use
      • Individual field or farm
      • Ditch-wide analysis
      • River basin-wide analysis
statecu3
StateCU
  • Software
    • Graphical User Interface (GUI)
      • New Scenario Wizard
    • FORTRAN executable program
statecu4
StateCU
  • Scenarios
    • Climate Station
      • Potential Consumptive Use (PCU)
      • Crop Irrigation Water Requirement (CIR or IWR)
    • Structure
      • Water supply limited by structure
      • Water supply limited by structure considering ground water
      • Water supply limited by structure and priority
statecu5
StateCU
  • Methods
    • Through the GUI
      • Monthly:
        • Original Blaney-Criddle
        • Modified Blaney-Criddle
        • Pochop (for bluegrass only)
      • Daily:
        • ASCE Standardized Penman-Monteith(Wizard is not setup to create a daily dataset at this time)
statecu6
StateCU
  • Methods
    • Through DOS executable
      • Monthly:
        • Original Blaney-Criddle
        • Modified Blaney-Criddle
        • Pochop (for bluegrass only)
      • Daily:
        • ASCE Standardized Penman-Monteith
        • Penman-Monteith
        • Modified Hargreaves
where to start a hcu analysis
Where to start a HCU analysis?
  • Quick General Information Analysis
    • Climate Station Scenario
      • Potential Evapotranspiration (ET)
      • Crop Irrigation Water Requirement (CIR or IWR)
climate station scenario
Climate Station Scenario
  • Climate Station Scenario
    • Wizard Walkthrough
    • Additional Considerations
    • Results
climate station scenario20
Climate Station Scenario
  • The Wizard has now created the dataset.
  • Data has been saved into a default location:

C:\CDSS\Data\STATECUWIZARD\[scenario name]

  • What is next?
climate station scenario28
Climate Station Scenario
  • Slight detour
  • Effective Precipitation Methods
    • None
    • Monthly Methods (monthly or daily analyses)
      • SCS TR-21
      • United States Bureau of Reclamation (USBR)
    • Daily Methods (only daily analyses)
      • Max Total Inches Per Day
      • Fraction of Total Precipitation
      • SCS NEH4
effective precipitation methods
Effective Precipitation Methods
  • SCS TR-21 (Monthly)
    • Re = (0.7091*Rt0.82416 – 0.11556)*(10(0.02426*cu))*F
      • Re - monthly effective precipitation
      • Rt- total monthly precipitation
      • cu - monthly consumptive use (potential ET)
      • F - function of D
        • D - the net depth of application
          • F = 0.531747 + 0.295164(D) – 0.057697(D2) + 0.003804(D3)
      • It should be noted that Re cannot exceed monthly precipitation or consumptive use. When this happens, Re is set equal to the lesser of the two.
effective precipitation methods1
Effective Precipitation Methods
  • USBR (Monthly)
    • Linearly related to precipitation.
      • Re = 0.95 * RtRt<1.0 inch
      • Re = 0.90 * (Rt – 1.0) + 0.95 1.0<Rt<2.0 inches
      • Re = 0.82 * (Rt – 2.0) + 1.85 2.0<Rt<3.0 inches
      • Re = 0.65 * (Rt – 3.0) + 2.67 3.0<Rt<4.0 inches
      • Re = 0.45 * (Rt – 4.0) + 3.32 4.0<Rt<5.0 inches
      • Re = 0.25 * (Rt – 5.0) + 3.77 5.0<Rt<6.0 inches
      • Re = 0.05 * (Rt – 6.0) + 4.02 Rt>6.0 inches
effective precipitation methods2
Effective Precipitation Methods
  • Max Total Inches Per Day
    • User-specified maximum effective precipitation in inches per day.
      • Re = Rt if Rt is less than or equal to the user- specified maximum effective rainfall, otherwise:
      • Re = User supplied maximum value.
effective precipitation methods3
Effective Precipitation Methods
  • Fraction of Total Precipitation
    • Re = F * Rt
      • Re - daily effective precipitation
      • F - a user-specified factor with the value ranging from 0 to 1
      • Rt- daily total rainfall.
effective precipitation methods4
Effective Precipitation Methods
  • SCS NEH4
    • Re = Rt - Ro
      • Ro = (P–(0.2*S))2 / (P+(0.8*S))
        • Ro - runoff
        • P - potential maximum runoff
          • The potential maximum runoff can be assumed equal to the total precipitation of the day.
        • S - potential maximum abstraction.
          • S = (1000/CN-10)
            • CN - runoff curve number
              • Three CN values are provided to StateCU for antecedent moisture conditions I, II, and III. StateCU determines the antecedent moisture condition based on the total precipitation in the 5-day period preceding the storm.
climate station scenario42
Climate Station Scenario
  • Elevation Adjustment
    • StateCU applies the adjustment to a crop type.
    • 10% adjustment upward for each 1,000 meters above sea level
      • The ASCE Manuals and Reports on Engineering Practice No. 70, Evapotranspiration and Irrigation Water Requirements (1990)
      • Corrects for lower mean temperatures that occur at higher elevations (warm daytime temperatures and cool nights).
      • Applied to potential consumptive use estimate.
      • Applicable to any crop type.
      • Should not be used with locally calibrated crop coefficients.
climate station scenario61
Climate Station Scenario
  • What is next?
    • Review the climate data and fill as appropriate
    • Add fields of crops, climate stations, etc.
    • Modify crop coefficients
    • Etc.
climate station scenario62
Climate Station Scenario
  • Crop ET/IWR comparison
    • SCS TR21 Blaney-Criddle
      • Original crop factors
      • Original crop factors with elevation adjustment
      • SPDSS regional calibrated crop factors
      • Case study calibrated crop factors
climate station scenario75
Climate Station Scenario
  • Questions?
  • Comments!
structure scenario
Structure Scenario
  • Structure Scenario
    • Wizard Walkthrough
    • Additional Considerations
    • Results
structure scenario22
Structure Scenario
  • The Wizard is now complete!
    • However, this is just the start.
    • All data and input information needs to be reviewed and refined as needed.
structure scenario25
Structure Scenario
  • 0500539 James Ditch HCU Analysis
    • SCS TR21 Blaney-Criddle
      • Original crop factors
      • Original crop factors with elevation adjustment
      • SPDSS regional calibrated crop factors
      • Case study calibrated crop factors
structure scenario26
Structure Scenario
  • Basic Assumptions Included:
    • CDSS Irrigated Acreage
    • Diversion Records Limited to:
      • River Diversions (S:1) for Irrigations Use (U:1)
      • Water Rights
    • Conveyance Efficiency of 82% (18% Ditch Loss)
    • Maximum Application Efficiency of 60% (flood)
    • Available Water Content (AWC) of 0.151 in/in
    • Initial Soil Moisture Storage of 50%
    • No Groundwater or other Supplemental Water Supplies were included in this analysis
structure scenario30
Structure Scenario
  • StateCU Binary Output File (*.bd1)
    • Total Irrigated Acreage
    • Modeled Irrig Acreage
    • Potential Crop ET
    • Effective Precip
    • Irrigation Water Reqt
    • WintPrec Soil Content
    • IWR After Winter Precip
    • River Diversion
    • Conveyance Efficiency
    • Conveyance Loss
    • Farm Headgate Delivery
    • Supply_TailWater_Drains
  • SW to CU
  • SW to Soil
  • SW to CU & Soil
  • SW_Non_Consumed
  • Max Application Effic
  • Calc SW ApplicEffic
  • Calc SW System Effic
  • SW Soil Content
  • Crop CU from SW
  • Crop CU from Soil
  • Total Crop CU
  • CU Shortage
structure scenario31
Structure Scenario
  • *.bd1 file not enough?
    • *.dwb – detailed water budget
    • *.4wb – detailed water budget by land category
structure scenario41
Structure Scenario
  • Additional Investigations Recommended
    • Interviews:
      • User
      • Ditch Company
      • Water Commissioner
    • Stock Certificate Reviews
    • Additional Parcel and Crop Investigations
      • Field Visits
      • Satellite/Aerial Imagery Review
    • Etc.
structure scenario42
Structure Scenario
  • Questions?
  • Comments!