Rainfall Statistics using FlowWorks

This video shows you how to use the rainfall summary report.

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Rainfall Statistics Summary Table Report

Once you have logged in and selected ‘Reporting’ in ‘My Network’, select ‘Rainfall Statistics’ to bring up the ‘Rainfall Statistics’ start up page.

  Rainfall Statistics Tool

Basic Instructions

1.      Site Selection

2.      Date Range Selection

3.     Rainfall Summary Table Interpretation

4.      Data Export

5.      Printing

 

1.      Site Selection

Begin by selecting the site from the drop down list. Only sites the contain rainfall data will show up in the list. For this example we will select the station Surrey Kwantlen Park.

Rainfall Statisitics Site Selection

 

2.      Date Range Selection

Then select the year and the month of interest, from the ‘Year:’ and ‘Month:’ window.  For this example we will select ‘2009’ and ‘January’.  Next click ‘View Rainfall Statistics

Date Range Selection

If you’re having problems with the screen showing up, make sure you allow pop-ups for www.flowworks.com.

 

3.      Rainfall Summary Table Interpretation

In the summary able that appears, the top axis shows the hours of a day and the left axis shows days of the month.

Rainfall Summary Table

Hourly Rainfall

Boxes that containt a point/period indicate no rainfall during that period.  Boxes that contain stars/asterisks indicate that there is no data available or that the data has been invalidated.

Daily Rainfall Totals

Totals for the day are shown in the middle column and a summation of the total rainfall is located at the bottom of this column.

Rainfall Summary Table Interpretation

The report will be viewed in  metric or imperial, depending on where the station is located

Rainfall Maxima

On the right hand side the rainfall maxima are shown. These represent the maximum given rainfall in a given time period, during the day in question. For example if we look at the 6 hour column on the 6th day, we see a value of 25.8mm. This means that the greatest amount of rain that fell over any given 6-hour period is 25.8mm, and the time immediately to the right represents the time the rainfall event ended.

Rainfall Maxima Table

Rainfall Event Data       

When you see a plus sign next to the time it refers to the time on the following day. For example on the 9th day in the 24-hour rainfall event column, the greatest amount of rainfall was 38.0mm. The rainfall event ended at 21:20 on the 10th. This allows you to look at the entire rainfall event because the system is capable of looking at rainfall over 2 calendar days and is not confused by midnight.

At the bottom of the table the monthly values for each duration are shown. For example in the 24-hour period 54.8mm was the greatest rainfall event that occurred in the given month. This way you can easily see a months worth of data to examine if any storm events match a particular minimum criteria that you have.

Rainfall Event Interpretation

 

4.   Data Export

You can also copy the values from the table into Microsoft Excel by simply selecting  the entire table which is done by clicking on the day cell in the top left hand corner and while holding the mouse button down, drag it to the bottom right corner.  The data should now all be highlighted. Copy the data either by going to edit in the toolbar at the top of the screen and choosing copy, or by simply pushing Ctrl + C on your keyboard, while the text is highlighted.

Rainfall Data Export

Next bring up Microsoft Excel and click inside the spreadsheet and paste paste the data in either by using the toolbar tool ‘edit’, ‘paste’ or press Ctrl + V on your keyboard.

You will see the table as it appeared in FlowWorks.  Execl will recognize the numerical values ready for analysis.

Rainfall Data Import Into Excel

 

5.   Printing

If you want to print directly from the internet explorer window just make sure your settings are on landscape so you’re print out comes out clearly. Or you can print off of excel.

Printing Rainfall Summary Table

 

For other instruction please see the instructional video for Rainfall Summary.

If you have a question related to this article you can ask it below.

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