These results show that the ANFIS and ANN models can accurately estimate coastal current velocities, although the ANFIS and ANN models at the windy condition give lower correlations. This shows that at the windy condition, the coastal currents are perhaps affected by other currents, such as tidal ones. Nevertheless, the obtained correlation coefficients for the stormy condition show that coastal currents are more influenced by storms, and other currents such as tidal ones are insignificant. Performances of the ANFIS and ANN models are compared in Table 7; it can be seen that the data-driven models outperform the MLR and MNLRP models.

Table 7

Obtained correlation coefficients associated with every employed estimator method

.	.	Method .
Parameter .	Condition .	ANN .	ANFIS .	MNLR .	MLR .
	General	0.796	0.751	0.569	0.531
	General	0.962	0.866	0.583	0.546
	Stormy	0.737	0.784	0.512	0.503
	Stormy	0.9137	0.933	0.643	0.326
	Windy	0.5709	0.571	0.455	0.343
	Windy	0.817	0.794	0.578	0.541

.	.	Method .
Parameter .	Condition .	ANN .	ANFIS .	MNLR .	MLR .
	General	0.796	0.751	0.569	0.531
	General	0.962	0.866	0.583	0.546
	Stormy	0.737	0.784	0.512	0.503
	Stormy	0.9137	0.933	0.643	0.326
	Windy	0.5709	0.571	0.455	0.343
	Windy	0.817	0.794	0.578	0.541

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