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AMYPLT is a plotting program that will allow the user to graphically view daily historical data residing in the Bureau of Reclamation's Hydromet archives database. The program allows the user the opportunity to view a plot of daily values covering a period of up to 10 years.

To set up a plot, a form must be filled out and submitted. To navigate the form during data entry, you may tab to the next field or click on any desired field. Clicking on the submit button will submit the form.

The Hydromet archives database stores all of the data in a water year format. A specified water year is defined as beginning on October 1 of the previous calendar year and ends on September 30 of the specified year. For example, water year 1997 is from October 1, 1996 through September 30, 1997. In the fields for beginning and ending months and days, enter the beginning date for the beginning year (designated in the next line of the form) and the ending date for the ending year (determined by the number of years to plot in the next line of the form) to define the desired time period of the plot. The default is the complete beginning and ending water years as shown.

On the next line, enter the beginning year for the plot and the number of years following (including the beginning year and not to exceed 10) for the desired plot.

The next set of fields is organized into two columns for entry of the station and parameter pairs which are desired for plotting. A maximum of three pairs may be entered, however at least two of the parameters must have the same units. In the station column, input the station code for the station of interest. If you do not know the code, a listing of all of the station codes can be found by CLICKING HERE. In the parameter column, input the parameter code for the parameter of interest for the adjacent station. A listing of parameter codes for all parameters is available by CLICKING HERE.

The plot-scale-limit fields refer to the vertical scales on either side of the graph and provide a means to override the computer-generated y axis scaling of the plot. By leaving the fields blank, the plot will automatically scale to fit the data requested. Normally the user need not make entries in these fields.

When the form has been completed, select the submit button and the plot will be generated.

Last Updated: March 5, 2013

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