Chotemankongsin et al. (2026) Evaluating the hydrological impacts of wetland restoration in a Dutch small catchment under future climate scenarios using SWAT+

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Identification

• Journal: Modeling Earth Systems and Environment
• Year: 2026
• Date: 2026-08-01
• Authors: Patit Chotemankongsin, Samuel Jonson Sutanto, Inge de Graaf, J.M. van Loon-Steensma
• DOI: 10.1007/s40808-026-02867-9

Research Groups

Not specified in the provided text.

Short Summary

This study evaluates the hydrological impact of strategic wetland restoration in the Linge catchment (Netherlands) using the SWAT+ model, finding that while NBS effectively reduce flood peaks, they may exacerbate water scarcity under dry future climate scenarios.

Objective

• To assess the mitigation potential of various wetland restoration configurations on flood peaks and baseflow in a human-dominated catchment under current and future (2050) climate scenarios.

Study Configuration

• Spatial Scale: Linge catchment, the Netherlands (Catchment scale).
• Temporal Scale: Current conditions and future climate projections for 2050.

Methodology and Data

• Models used: SWAT+ hydrological model.
• Data sources: KNMI climate change scenarios (2050).

Main Results

• Flood Mitigation: Converting agricultural land to wetlands reduced the continuous baseline flood peak by 11.7% and achieved an average peak reduction of 33.2% across eight extreme rainfall events.
• Spatial Configuration: Peak attenuation requires extensive catchment conversion, whereas decentralized layouts are more effective for supporting baseflow.
• Future Climate (Wet Scenario): Wetland restoration reduced the peak surge from +75.4% (baseline) to +39.5%.
• Future Climate (Dry Scenario): Intensive centralized wetlands increased water scarcity due to higher summer evapotranspiration, resulting in a mean drought duration of 60.1 days and a regulatory low flow (7Q10) of 0.070 m³/s.

Contributions

The study highlights the scenario-dependent nature of Nature-Based Solutions (NBS), demonstrating a critical trade-off where flood-mitigating configurations can exacerbate drought conditions, suggesting that NBS must be integrated with grey infrastructure for full climate resilience.

Funding

Not specified in the provided text.

Citation

@article{Chotemankongsin2026Evaluating,
  author = {Chotemankongsin, Patit and Sutanto, Samuel Jonson and Graaf, Inge de and Loon-Steensma, J.M. van},
  title = {Evaluating the hydrological impacts of wetland restoration in a Dutch small catchment under future climate scenarios using SWAT+},
  journal = {Modeling Earth Systems and Environment},
  year = {2026},
  doi = {10.1007/s40808-026-02867-9},
  url = {https://doi.org/10.1007/s40808-026-02867-9}
}