Šarauskienė et al. (2026) Flood Characterisation in Lithuanian Lowland Rivers Using a Peaks-over-Threshold Approach

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

Identification

• Journal: Water
• Year: 2026
• Date: 2026-04-26
• Authors: Diana Šarauskienė, Jūratė Kriaučiūnienė, Darius Jakimavičius, Atėnė Biliūnaitė
• DOI: 10.3390/w18091033

Research Groups

Not specified

Short Summary

This study evaluates the application of the peaks-over-threshold (POT) approach to Lithuanian rivers, finding that it provides a more comprehensive characterization of flood magnitude, frequency, and seasonality than traditional annual maximum series.

Objective

• To assess the added value of the peaks-over-threshold (POT) approach compared to annual maximum series in analyzing extreme flow regimes across different hydrological regions in Lithuania.

Study Configuration

• Spatial Scale: Regional (Lithuania; focusing on three rivers from distinct hydrological regions and one large river).
• Temporal Scale: Not specified (based on daily discharge time series).

Methodology and Data

• Models used: Peaks-over-threshold (POT) approach (specifically POT1, POT2, and POT3 samples), Annual Maximum Series (AMS), trend analysis, and seasonal flood frequency assessment.
• Data sources: Daily discharge time series.

Main Results

• The POT approach extracted significantly more information regarding flood magnitude, frequency, and seasonality from the daily discharge data than the annual maximum series.
• Trend and seasonal analyses revealed pronounced differences in extreme flow behavior between rivers located in regions with contrasting runoff-generation processes.
• The POT method proved particularly effective for characterizing rivers prone to frequent flash flooding.

Contributions

• Demonstrates the superiority of the POT approach over the annual maximum series for a more detailed and comprehensive characterization of river extreme events in diverse hydrological settings.

Funding

Not specified

Citation

@article{Šarauskienė2026Flood,
  author = {Šarauskienė, Diana and Kriaučiūnienė, Jūratė and Jakimavičius, Darius and Biliūnaitė, Atėnė},
  title = {Flood Characterisation in Lithuanian Lowland Rivers Using a Peaks-over-Threshold Approach},
  journal = {Water},
  year = {2026},
  doi = {10.3390/w18091033},
  url = {https://doi.org/10.3390/w18091033}
}