Introduction

After extracting the closet Pcp gauge to each tidal gauge, we extracted the closest streamflow to each tide gauge. After dealing with missing values for flow gauges like tidal and pcp gauges considering time span of 1960 to 2018, we matched three datasets together and them we remove their NAs. Let’s track this flow as follows.

The following figure shows the position of all streamflow stations that we need. It includes 888 stations. Note, we did not download the stream flow data of some provinces like manitoba and alberta and others in the north as we do not have any tidal gauge close to them.

The following figure shows the position of all stations with missings less than 20 percent considering time span of 1960 to 2012. It includes 227 stations

The following figure shows the stations of 227 which the number of years missing is less than 12 (this is equal to 20 percent og the years which 59). the number of stations are 214

The following figure shows all 34 streamflow stations being close to each tidal gauge station.

The following figure shows all the position of 58 tidal gauges, pcp and streamflows. Note: tidal gauges in ‘red’, pcp gauges in ‘blue’ and streamflow gauges in ‘green’

Note: It should be mentioned that when we match three variables of pcp, tidal gauge and streamflow and then we remove NAs, considering a threshould of 20 percent, we have only 18 points to work with. These points are for tidal gauges. The below figure represents the position of these 18 points.