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Table 1 shows the percentage differences of depth to groundwater between the dates of analysis of the drainage network area and the erosion events selected to calculate the connectivity index. Depth to groundwater percentage differences were between 9.8 and 2.4%. As well, percentage differences of depth to groundwater corresponding to the dates of analysis of the drainage network were calculated, which were between 68 and 139%. According to the results, it was considered that conditions between the selected dates to obtain the index value were comparable. Therefore, the connectivity index was calculated for the dates: 05/03/2012, 03/09/2012 and 19/12/2012.

Table 1

Percentage difference of depth to groundwater between the values corresponding to the date of estimate of the drainage area and the date of the event selected for the connectivity index calculation

Date
Percentage difference of depth to groundwater (%)
Drainage areaEvent
01/02/2012 05/03/2012 6.7 
13/09/2012 03/09/2012 2.4 
21/12/2012 19/12/2012 9.8 
Date
Percentage difference of depth to groundwater (%)
Drainage areaEvent
01/02/2012 05/03/2012 6.7 
13/09/2012 03/09/2012 2.4 
21/12/2012 19/12/2012 9.8 

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