Return to Calibrate the Model Using Three Calibration Events

Last Modified: 2023-02-28 13:47:54.347

HEC-HMS Version

HEC-HMS version 4.11 was used to create this tutorial. You will need to use HEC-HMS version 4.11, or newer, to open the project files.

Project Files

If you are continuing from Calibrate the Model Using Three Calibration Events, you may continue to use your current project files. Otherwise download the initial files here:

Russian_River.zip


  1. Use the calibrated models to inform a validation parameter set. All model parameter except the constant loss rate were held constant between the three calibration events. The table below provides a sample summary of the Constant Rate (in/hr) parameter. In a spreadsheet, document, or notepad, create a validation parameter set.

    Subbasin

    Event: 1986

    Event: 1997

    Event: 2006

    Validation

    EF Russian 20





    EF Russian 10





    WF Russian





    Russian 70





    Russian 70





    Russian 60





    Russian 50





    Big Sulphur Cr





    Russian 40





    Russian 30





    Dry Creek 30





    Dry Creek 20





    Dry Creek 10





    Laguna





    Santa Rosa Cr 20





    Santa Rosa Cr 10





    Green Valley





    Russian 20





    Austin Cr





    Russian 10





    The table below provides a sample summary of the Constant Rate (in/hr) parameter. In this example, the validation parameter set was an average of the parameters used in three calibration events.

    Subbasin

    Event: 1986

    Event: 1997

    Event: 2006

    Validation

    EF Russian 20

    0.28

    0.14

    0.28

    0.23

    EF Russian 10

    0.25

    0.14

    0.25

    0.21

    WF Russian

    0.35

    0.19

    0.21

    0.25

    Russian 70

    0.20

    0.28

    0.56

    0.35

    Russian 60

    0.10

    0.14

    0.26

    0.17

    Russian 50

    0.21

    0.17

    0.30

    0.23

    Big Sulphur Cr

    0.09

    0.05

    0.28

    0.14

    Russian 40

    0.29

    0.16

    0.88

    0.44

    Russian 30

    0.14

    0.08

    0.44

    0.22

    Dry Creek 30

    1.56

    1.30

    1.33

    1.40

    Dry Creek 20

    0.17

    0.14

    0.14

    0.15

    Dry Creek 10

    0.20

    0.17

    0.18

    0.18

    Laguna

    0.34

    0.28

    0.29

    0.30

    Santa Rosa Cr 20

    0.24

    0.2

    0.21

    0.22

    Santa Rosa Cr 10

    0.31

    0.26

    0.27

    0.28

    Green Valley

    0.35

    0.29

    0.30

    0.31

    Russian 20

    0.92

    0.77

    0.78

    0.82

    Austin Cr

    0.08

    0.07

    0.07

    0.07

    Russian 10

    0.20

    0.17

    0.18

    0.18

Continue to Validate the Model