Aloha, my name is Casey Rita and I am a Hydrologic Technician with the U.S.G.S. in Honolulu,
Hawaii.
In this video I will be walking you through the different options and features in the
discharge measurement portion of SWAMI.
When you click on the "tasks" button it will take you to the "site visit tasks" menu.
In this list you will find the "Discharge Measurement" button.
At the top of the screen you will see two options: "Import Channel" and "New Channel",
you want to select "New Channel."
This is where you will enter your channel information, it is important to note that
you will not be able to continue to the next screen until all fields with an "*" are populated.
First, you have to name your channel.
In the "Qm Method" drop down menu you will see your options describing the methods available
for measurement of the channel discharge.
When you select a discharge method, SWAMI will adjust the channel information page to
accommodate your selection.
You will notice that when you select "ADCP" as a Qm method you will be asked if you want
to stage an acoustic channel for Import or summarization later, this topic as well as
the various Q methods will be discussed in a separate screencast video.
Once your Qm method is selected you then select your deployment method from the drop down
list.
Next you select your velocity method from the drop down list.
Selecting a midsection method with an ADV will also give you the option to stage the
measurement, and is again, covered in a separate screencast video.
For this example we will select pygmy.
The meter field will contain a list of meter numbers that are in your meters file, which
are pulled from SiteVisit; select the proper meter to document that it was used with this
measurement.
Next select the suspension of your meter.
Same as the channel information page adjusts for the Qm method, you will notice the suspension
drop down menu will also change based on the different deployment methods.
For example: if we were to select cableway, the suspension options change; and if it applies
you will be able to enter your weight distance and your weight size.
However, for our pygmy example we will select top-setting wading rod.
You can enter your spin test by clicking the button, this will take you to a new screen
where you can "Add Spin Test."
Once at the spin test menu simply fill out the information.
If you are satisfied with the data, click "done."
You will see your spin test has been added, click "done."
Be sure to check the "Meter Inspected" box, and if "Summary Only" applies to the measurement
check this box as well.
Click "Measure."
Note that after pressing measure the measurement summary screen varies depending on the discharge
and deployment methods selected.
These are covered in detail in separate screencasts that are specific to the discharge and deployment
method combinations.
In the "Channel Summary" screen you will enter the characteristics of this measurement and
the environment in which it was made.
From the drop down menu select your location.
You will notice if you chose "At the Gage" the section distance will be grayed out.
Any other option will give you the choice to fill in this field.
In the "Horizontal Flow" menu describe if the section was even or if parts of the stream
were faster than others select uneven.
"Channel Conditions" and "Velocity Description" will take you to a separate screen.
In the channel description you will select your material the stability and the evenness.
In the velocity description select your vertical distribution and your velocity distribution.
Click "Done."
You will see it's been populated.
Now indicate what side of the stream you started on.
After your measurement is complete you can add another spin test.
Or if the meter was just checked to be free, check "meter inspected."
Click "Done."
This next screen is to assist with rating verification based on the measurement that
was just completed.
Keep in mind this function will only work if you have your current rating and shifts
synced to your SWAMI.
You can enter your gage height and the rest of the fields will populate for you based
on current rating information.
Here you can see the unshifted Q and the percent difference, as well as the shifted Q and the
percent difference.
If there was a current shift in place these values would be different than the unshifted
Q. You can also use the "Plot Rat" feature to put this measurement on your current rating.
All these tools will indicate if you verified your rating, if you verified your current
shift, or if you need to make a check measurement.
After you evaluate the rating comparison to the current measurement click "Done."
Here it asks if you want to end the discharge measurement.
Click "Yes."
The "Measurement Summary" screen is used to individualize this measurement from others
and gives certain pertinent information.
If you don't know what the current measurement number is you can check the "AUTOSEQ" feature
and SiteVisit will apply the next available number in sequence upon import.
The discharge field will automatically be populated for you from previous menus.
From the drop down menu select the quality rating of this discharge measurement.
The next drop down menu will help explain the type of flow being measured.
For example: Is this base flow, non base flow, or unknown?
It is important to understand what base flow means.
Base flow is defined as "sustained flow of a stream in the absence of direct runoff.
It includes natural and human-induced streamflows.
Natural base flow is sustained largely by ground-water discharges."
Next document the stage associated with this measurement and if the stage changed at all.
You will then enter your start time and your end time.
Once your times have been entered, enter the measurement duration in hours.
If there is any information that wasn't captured by the drop down menus, you can always use
the remarks field.
However, when all the information is input click "Done."
Now that the measurement has been well documented, on this screen you have a few options at the
bottom of the screen that you can apply to this measurement.
By clicking the measurement these options become clickable.
You can describe if it is a "check measurement" or if it is "unused."
If the measurement is going to be unused it will prompt you to describe why.
When you click "Done" it will take you back to the "Site Visit Tasks" menu.
You can now check the box next to "Discharge Measurement" to show that the status is complete.
If you have any questions on the discharge measurements section of SWAMI, please contact
the SWAMI help group at the email address shown or visit the FCIS webpage at the address
shown.