Peak Flow - Regional Method (KYDOT)

This command calculates peak flow using the regional method, as stated in the DR-401 manual. Regression Equation Methodology has been adopted by the Cabinet to calculate peak flows. The method is described in USGS Water Resources Investigations Report 03-4180 (2003) titled “Estimating the Magnitude of Peak Flows for Streams in Kentucky for Selected Recurrence Intervals”. The method divides the state into seven regions. Regression equations have been developed for each region based on stream gage station data and other parameters that are applicable to the watersheds that were analyzed.

When you first run the command, the Select Peak Flow File - (peak) dialog box opens. You can start a completely new pond project or open an existing pond project.
Select or Create *.peak File

Peak Flow Regional Methods:

When you start a new Peak Flow Regional project, the Peak Flow Regional Methods settings dialog will open first to let you select the Site Location, Area Units, and Channel Slope Units. Select OK
Peak Flow Regional Methods

Rural Regional Methods:

Set Project Name, Select Region, Return Period, Input manually or select a closed polyline to calculate Drainage Area. Input manually or select a Flow Line from drawing file to define Channel Slope. Press Calculate to see the Peak Flow (cfs).



       
                                                                                                                            

Prompts

Peak Flow Regional: Fill in values.

Pulldown Menu Location: Watershed > Peak Flow > Regional Method
Keyboard Command: regional_peakflow
Prerequisite: none