Drainage Regime Runoff Variation Reference Diagrams for Germany

HAD drainage regime data provides standardized daily quantiles of river runoff for frequency analysis. The data, produced by the Bundesamt für Kartographie und Geodäsie, includes Q10, Q25, Median, Q75, and Q90 values smoothed over 20-day intervals. These reference diagrams allow for the estimation of drainage donations and flows at specific catchment areas or water cross-sections.

Use Cases

• Calculate drainage donations for specific catchment areas based on the indicated median drainage donation qMed.
• Estimate flows at water cross-sections using the provided catchment area (AE) and standardized quantile curves.
• Analyze the internal and interannual variation of runoff using the annual series of smoothed daily quantiles.
• Perform frequency analyses of water level time series using the standardized reference diagrams.

Strengths

• Data includes multiple standardized quantiles (Q10, Q25, Median, Q75, Q90) for detailed analysis.
• Values are smoothed over a 20-day window, which likely reduces noise for trend analysis.
• The dataset enables calculation of drainage donations at any point in the year via the provided curves.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Bundesamt für Kartographie und Geodäsie

Collection Method

Frequency analysis of selected level time series, likely from hydrological monitoring stations.

Geography

Germany (implied by the organization 'Bundesamt für Kartographie und Geodäsie')