Creaco (2025) Excess Rainfall-Based Derivation of Intensity–Duration–Frequency Curves

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

Identification

• Journal: Water
• Year: 2025
• Date: 2025-12-02
• Authors: Enrico Creaco
• DOI: 10.3390/w17233428

Research Groups

Not specified in the provided text.

Short Summary

This paper introduces an innovative method to derive Intensity-Duration-Frequency (IDF) curves from excess rainfall (ERIDF curves), utilizing a simplified hydrological model and annual maxima analysis. This approach demonstrates improved preservation of return periods in rainfall-runoff transformation for hydraulic design compared to conventional methods.

Objective

• To develop an innovative method for deriving Intensity-Duration-Frequency (IDF) curves based on excess rainfall (ERIDF curves) to improve the preservation of return periods in rainfall-runoff transformation for hydraulic infrastructure design.

Study Configuration

• Spatial Scale: Catchment scale, site-specific.
• Temporal Scale: Long-term, fine-resolution rainfall time series; annual maxima analysis.

Methodology and Data

• Models used: Simplified hydrological model (for gross-excess rainfall conversion), Annual Maxima (AM) analysis.
• Data sources: Long, fine-resolution time series of rainfall depth (observation).

Main Results

• Excess rainfall-based Intensity-Duration-Frequency (ERIDF) curves can be constructed by applying annual maxima analysis to excess rainfall intensity data.
• For a given return period and duration, ERIDF curves directly provide the associated excess rainfall intensity value.
• The use of ERIDF curves in the rational formula for estimating peak water discharge results in a better preservation of the return period in the rainfall–runoff transformation compared to conventional IDF curves with runoff coefficients.

Contributions

• Introduces an innovative derivation of Intensity-Duration-Frequency (IDF) curves based on excess rainfall (ERIDF curves).
• Proposes a method that directly incorporates hydrological losses into IDF curve derivation, leading to more accurate return period preservation in rainfall-runoff transformation.
• Offers an improved approach for the design of hydraulic infrastructures, addressing limitations of conventional methods that rely on runoff coefficients.

Funding

Not specified in the provided text.

Citation

@article{Creaco2025Excess,
  author = {Creaco, Enrico},
  title = {Excess Rainfall-Based Derivation of Intensity–Duration–Frequency Curves},
  journal = {Water},
  year = {2025},
  doi = {10.3390/w17233428},
  url = {https://doi.org/10.3390/w17233428}
}