Application of Multivariate Statistical Analysis in Evaluation of Surface River Water Quality of a Tropical River

Table 2

Correlation matrix ( value ≤ 0.05) of the in situ and ex situ parameters collected from the 30 sampling stations.

Discharge

Velocity

Depth

Temp

pH

Cond

DOsat

DO

Turb

Trans

Chl a

TSS

BOD5

COD

TP

TAN

-N

-N

Org-N

H2S

Discharge

.392

.834

−.546

.601

.706

.389

Velocity

.392

−.391

−.511

.381

−.389

.555

.491

.454

Depth

.834

.641

.513

Temp

.658

.610

−.480

−.528

−.390

−.403

pH

−.546

−.391

.658

.549

−.539

−.650

.413

−.608

−.566

Cond

−.511

.610

.549

−.444

.478

−.467

−.554

−.454

DOsat

−.539

−.582

.915

.714

DO

.601

.641

.527

−.544

−.456

−.547

.362

Turb

.706

.381

.513

−.480

−.650

.527

.366

−.493

.399

Trans

−.389

.413

−.582

−.605

−.361

Chl a

TSS

.389

−.608

.915

.366

−.605

.596

BOD5

.555

−.444

−.544

.550

.545

.523

COD

.478

−.493

−.392

TP

.491

−.467

−.456

.550

.540

.564

TAN

−.528

-N

-N

.454

−.390

−.554

.545

−.392

.540

.515

Org-N

−.547

.523

.564

.515

H2S

−.403

−.566

−.454

.714

.362

.399

−.361

.596