# Seasonal Variations and Assessment of Surface Water Quality Using Water Quality Index (WQI) and Principal Component Analysis (PCA): A Case Study

*PRI Rank #19 · Topics and Trends in Most Cited Water Quality and Pollution Assessment Papers, Class of 2026*

*Canonical URL: https://pri.pepkio.com/top-papers/water-quality-and-pollution-assessment/2026/rank-19*

| Field | Value |
| --- | --- |
| Rank | #19 |
| 18m citations | 59 |
| Journal | Sustainability |
| Year | 2024 |
| DOI | 10.3390/su16135644 |
| Corresponding authors | Hefdhallah S. Al-Aizari |
| Institution | Ibn Tofail University, Morocco |

**Ranking page:** [Topics and Trends in Most Cited Water Quality and Pollution Assessment Papers, Class of 2026](https://pri.pepkio.com/top-papers/water-quality-and-pollution-assessment/2026)

**Paper link:** [10.3390/su16135644](https://doi.org/10.3390/su16135644)

## Topics

Water Quality Index · Principal component analysis (PCA) · Seasonal variation · surface water quality · Nador Canal · Heavy metals · Na-Cl water type · Ca2+-Na+-HCO3− water type · Drinking water quality · Irrigation water quality · magnesium · sodium · calcium · industrial runoff · Agricultural runoff · rainfall patterns · Pollution sources · Nutrient pollution · Water resource management

## Cite this ranking

```
Pepkio Research Index (PRI). Topics and Trends in Most Cited Water Quality and Pollution Assessment Papers, Class of 2026. https://pri.pepkio.com/top-papers/water-quality-and-pollution-assessment/2026. Accessed 2026-10-30.

Zheng Su, Tinsley Li, Thematic Shifts in Early-High-Impact Cancer Genomics and Diagnostics Research: A Bibliometric and Semantic Analysis. bioRxiv 2026.07.04.736459; doi: https://doi.org/10.64898/2026.07.04.736459
```