Mostafazadeh et al. (2025) Variability in Time and Space: Flow Regimes and Seasonality Indices in the Mountainous Rivers of Northern Iran

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Identification

• Journal: River Research and Applications
• Year: 2025
• Date: 2025-08-14
• Authors: Raoof Mostafazadeh, Mohsen Zabihi, Javanshir Azizi Mobaser
• DOI: 10.1002/rra.70016

Research Groups

[Not specified]

Short Summary

This study analyzes the spatiotemporal variability of river flow seasonality in northern Iran using the Seasonality Index (SI), finding that the northeastern region exhibits the highest seasonality driven by snowmelt.

Objective

• To investigate and evaluate the spatiotemporal changes in river flow regime seasonality within northern Iran.

Study Configuration

• Spatial Scale: Northern Iran, specifically Mazandaran province and the Alborz Mountain foothills.
• Temporal Scale: Monthly river flow data (specific time range not provided).

Methodology and Data

• Models used: Seasonality Index (SI), Coefficient of Variation (CV), and SI-k mapping.
• Data sources: Monthly river flow data from gauging stations (including Baladeh, Razan, and Ploor).

Main Results

• The Seasonality Index (SI) values range from 0 to 0.77, with the highest values located in the northeastern parts of the region.
• The northeastern area exhibits the highest CV and SI values, influenced by heavy rainfall and snowmelt.
• Specific stations (Baladeh, Razan, and Ploor) are characterized by "seasonal" flow regimes driven by snowmelt from the Alborz Mountain foothills.
• The central region of Mazandaran province demonstrates higher water yield values compared to other areas.
• The SI-k map shows a strong correlation with the SI index regarding annual water yield seasonality.

Contributions

• Provides a detailed spatiotemporal characterization of hydrological seasonality in northern Iran, offering essential data for improving water management, ecosystem services, and disaster risk reduction (specifically flood risk) in the region.

Funding

[Not specified]

Citation

@article{Mostafazadeh2025Variability,
  author = {Mostafazadeh, Raoof and Zabihi, Mohsen and Mobaser, Javanshir Azizi},
  title = {Variability in Time and Space: Flow Regimes and Seasonality Indices in the Mountainous Rivers of Northern Iran},
  journal = {River Research and Applications},
  year = {2025},
  doi = {10.1002/rra.70016},
  url = {https://doi.org/10.1002/rra.70016}
}