Flood Hazard Assessment Data for Pikrodafni River Basin in Attica

A spatial dataset supporting an integrated flood hazard methodology applied to the Pikrodafni River Basin in Attica, Greece. It was developed by the BEYOND Centre and NTUA research group, incorporating targeted spatial data, Earth-observation imagery, and field surveys. The methodology identified up to 200 critical flood points, with 35% classified as first-priority.

Use Cases

• Calibrate HEC-HMS and HEC-RAS models using field-measured dimensions of hydraulic structures and channel properties.
• Validate flood simulation results from LISFLOOD-FP by comparing them with identified high-risk critical points and historical flood records.
• Analyze the spatial distribution of overflow locations, such as buried streams and stream confluences, against urban infrastructure data.
• Prioritize intervention sites by applying the classification of first-priority critical points derived from field visits and modeling.

Strengths

• High spatial resolution was maintained throughout the data acquisition and modeling phases.
• Methodology identified up to 200 critical points for flood intervention.
• Integrates multiple data sources including Earth-observation imagery, time-series data, and field surveys.

Limitations

• Dataset size is 20.3 MB, indicating a limited spatial or temporal scope for the included data files.
• Specific row and column counts for tabular data are unknown, limiting precise assessment of dataset scale.
• Focus is on a single river basin (Pikrodafni), which may limit generalizability to other regions without similar transferable methodology.

Provenance

Source

BEYOND Centre (IAASARS/NOA) in cooperation with the NTUA research group, under the Programming Agreement of the Prefecture of Attica.

Collection Method

Data acquisition involved targeted spatial datasets, Earth-observation imagery, time-series data, historical records, and field visits for verification and measurement.

Freshness

Last updated on 2026-03-23, indicating recent maintenance.

Geography

Pikrodafni River Basin and four other flood-affected river basins in Attica, Greece.