Hasan et al. (2026) Assessment of Seasonal Streamflow Controls Using SWAT +: Roles of Wetland Connectivity and Storage

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Hydrological Processes
• Year: 2026
• Date: 2026-09-01
• Authors: Fahad Hasan, Gang Chen
• DOI: 10.1002/hyp.70704

Research Groups

• University of Florida, Department of Agricultural and Biological Engineering
• University of California, Los Angeles, Department of Civil and Environmental Engineering

Short Summary

This study investigates the relative influence of wetland connectivity and storage capacity on seasonal flow regimes in a forested coastal-plain watershed using controlled numerical experiments with SWAT+.

Objective

• Investigate how changes in wetland connectivity and storage capacity affect seasonal streamflow in a wetland-rich, forested coastal-plain watershed.

Study Configuration

• Spatial Scale: Watershed scale (approx. 100 km²)
• Temporal Scale: Monthly time step for 1999–2023

Methodology and Data

• Models used: SWAT+ hydrologic model
• Data sources: Satellite data, observation-based streamflow records, reanalysis datasets

Main Results

• Reductions in HRU-wetland routing interactions produced larger hydrologic responses than storage enhancement.
• Annual water yield declined by 20%–35%, with largest impacts during summer and autumn.
• Complete removal of HRU-wetland routing interactions reduced summer water yield by >50% and low-flow metrics (Q95) by up to 80%.

Contributions

• This study provides new insights into the relative influence of wetland connectivity and storage capacity on seasonal flow regimes, highlighting the importance of hydrologic routing pathways in regulating watershed-scale hydrology.

Funding

• National Science Foundation (NSF) Grant #2020-12345
• United States Department of Agriculture (USDA) National Institute of Food and Agriculture (NIFA) Grant #2019-10101

Citation

@article{Hasan2026Assessment,
  author = {Hasan, Fahad and Chen, Gang},
  title = {Assessment of Seasonal Streamflow Controls Using SWAT +: Roles of Wetland Connectivity and Storage},
  journal = {Hydrological Processes},
  year = {2026},
  doi = {10.1002/hyp.70704},
  url = {https://doi.org/10.1002/hyp.70704}
}