Ahr catchment
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Land conditions
Land use: land use map for 2019 (CORINE).
Four main land uses can be found in the Ahr catchment: artificial surface (5.1%), agricultural areas (38.7%), forest (56.1%) and water bodies (0.1%)
Within the 4 main land uses, the following uses can be found:
- Artificial surfaces
- Discontinuous urban fabric
- Industrial or commercial units
- Mineral extraction sites
- Sport and leisure facilities
- Agricultural areas
- Vineyards
- Non-irrigated arable land
- Pastures
- Complex cultivation patterns
- Forest
- Forest
- Natural grassland
- Water bodies
- Water courses
Soil type: soil is mostly divided in 3 zones composed of materials as follows:
- Eutric Cambisols – Haplic Luvisols
- Dystric and Eutric Cambisols
- Eutric Fluvisols – Chromic Luvisols
Historical events in the area
Between July 14th and 15th of 2021, an extreme event occurred in the Ahr catchment, affecting settlements and infrastructures along the river and over the floodplains. The event destroyed 3 gauges, interrupting the transfer of the data and the lost of important information.
The event caused 130 fatalities, and it was calculated a return period for the flood >1000 years. On July 14th the amount o rainfall recorded was around 150 mm.
During the event, the flow gage recording the discharge (water level) was damaged. Due to this reason, the register was not complete, and the peak discharge was not measured. However, using hydrological tools and modelization, a peak discharge between 400-700 m3/s was simulated.
