Furthermore, to understand the spatial magnitude effect of canal blocking, GWL
dynamics can be traced through the correlation between groundwater level and
surface water level. A strong positive correlation coefficient shows that both groundwater level and surface water level increase linearly together. Correlation coefficient
analysis shows that Jajangkit canal had stronger positive correlation compared to
Ulin, particularly during the rainy season. It means that the blocked canal, Jajangkit,
has strong surface water level and groundwater level correlation compared to the
unblocked canal, Ulin.
Fig. 20.16 Correlation coefficients between the changes of surface water level and the groundwater level depth in Jajangkit and Ulin during dry, transition from dry to rainy, and rainy season (note:
coefficient correlation 1 ¼ very strong; 0 ¼ very weak/No correlation; À1 ¼ very strong in the
opposite way)
20 Hydrological Management Practices
587
dynamics can be traced through the correlation between groundwater level and
surface water level. A strong positive correlation coefficient shows that both groundwater level and surface water level increase linearly together. Correlation coefficient
analysis shows that Jajangkit canal had stronger positive correlation compared to
Ulin, particularly during the rainy season. It means that the blocked canal, Jajangkit,
has strong surface water level and groundwater level correlation compared to the
unblocked canal, Ulin.
Fig. 20.16 Correlation coefficients between the changes of surface water level and the groundwater level depth in Jajangkit and Ulin during dry, transition from dry to rainy, and rainy season (note:
coefficient correlation 1 ¼ very strong; 0 ¼ very weak/No correlation; À1 ¼ very strong in the
opposite way)
20 Hydrological Management Practices
587