drquek
06-30-2009, 06:47 PM
The following events were simulated using the HEC-HMS model in Day 1 of Workshop No. 2:<o></o>
<o></o>
<table class="MsoTableGrid" style="border: medium none ; border-collapse: collapse;" border="1" cellpadding="0" cellspacing="0"> <tbody><tr style=""> <td style="border: 1pt solid windowtext; padding: 0mm 5.4pt;" valign="top"> Type of Simulation<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Type of Catchment<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Objective<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Storm<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Discharge/Flow<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Method<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Calibration<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Calibrate the parameters for Initial Loss-Constant Loss, Clark’s Storage Coefficient and Baseflow.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Recorded hourly storm hyetographs from 4-10-1977 to 6-10-1977<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Measured hourly flow hydrograph for 4-10-1977 to <o></o>
8-10-1977.<o></o>
<o></o><o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Matching the measured historical and computed peak discharges and time to peak.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Validation<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Verify the calibration by using as input another rainfall-runoff (storm and discharge) event.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> A different storm event <o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> A different flow hydrograph<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Check to see if the model can accurately predict the measured peak discharges and time to peak.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Prediction<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> This is the design run. The aim is to compute the critical design flow at the catchment outlet. This is done by applying the calibrated model for a range of storm durations of a given ARI to determine the highest (critical) peak discharge.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Design storms of 6, 12, 24 hr durations and 100 year ARI.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Design flows of 6, 12, 24 hr durations and 100 year ARI.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> The critical duration was found to be 12 hrs as this gives the highest peak discharge.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Prediction<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Ungauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Compute design flow for an ungauged catchment by using HP11 to calibrate the HEC-HMS model.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Using HP1 to derive the storm of various duration and ARI<o>:p></o>:p>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Using HP11 to compute the design hydrograph for various storm durations.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Calibrate the model against HP11 computed hydrograph. Then run the HEC-HMS model using the design storm from HP1.<o></o>
</td> </tr> </tbody></table> <o>:p> </o>:p>
<o></o>
<table class="MsoTableGrid" style="border: medium none ; border-collapse: collapse;" border="1" cellpadding="0" cellspacing="0"> <tbody><tr style=""> <td style="border: 1pt solid windowtext; padding: 0mm 5.4pt;" valign="top"> Type of Simulation<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Type of Catchment<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Objective<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Storm<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Discharge/Flow<o></o>
</td> <td style="border-style: solid solid solid none; border-color: windowtext windowtext windowtext -moz-use-text-color; border-width: 1pt 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Method<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Calibration<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Calibrate the parameters for Initial Loss-Constant Loss, Clark’s Storage Coefficient and Baseflow.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Recorded hourly storm hyetographs from 4-10-1977 to 6-10-1977<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Measured hourly flow hydrograph for 4-10-1977 to <o></o>
8-10-1977.<o></o>
<o></o><o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Matching the measured historical and computed peak discharges and time to peak.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Validation<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Verify the calibration by using as input another rainfall-runoff (storm and discharge) event.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> A different storm event <o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> A different flow hydrograph<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Check to see if the model can accurately predict the measured peak discharges and time to peak.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Prediction<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Gauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> This is the design run. The aim is to compute the critical design flow at the catchment outlet. This is done by applying the calibrated model for a range of storm durations of a given ARI to determine the highest (critical) peak discharge.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Design storms of 6, 12, 24 hr durations and 100 year ARI.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Design flows of 6, 12, 24 hr durations and 100 year ARI.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> The critical duration was found to be 12 hrs as this gives the highest peak discharge.<o></o>
</td> </tr> <tr style=""> <td style="border-style: none solid solid; border-color: -moz-use-text-color windowtext windowtext; border-width: medium 1pt 1pt; padding: 0mm 5.4pt;" valign="top"> Prediction<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Ungauged catchment<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Compute design flow for an ungauged catchment by using HP11 to calibrate the HEC-HMS model.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Using HP1 to derive the storm of various duration and ARI<o>:p></o>:p>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Using HP11 to compute the design hydrograph for various storm durations.<o></o>
</td> <td style="border-style: none solid solid none; border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-width: medium 1pt 1pt medium; padding: 0mm 5.4pt;" valign="top"> Calibrate the model against HP11 computed hydrograph. Then run the HEC-HMS model using the design storm from HP1.<o></o>
</td> </tr> </tbody></table> <o>:p> </o>:p>