HydroBASINS lev08 watershed · #2080416200
Bassin de Ahr
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 5 administrative regions : Ahrweiler, Euskirchen, Mayen-Koblenz, Rhein-Sieg-Kreis, Vulkaneifel
Sub-basin area
901,7km²
Upstream area
901,7km²
Discharge
7,5m³/s
Mean elev.
411m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 538.3 km²59.5% of basin
- Euskirchen211.7 km²23.4% of basin
- 150.1 km²16.6% of basin
- 4.0 km²0.4% of basin
- 0.7 km²0.1% of basin
30 intersecting protected areas
Rhein-Ahr-Eifel
IUCN VLandscape Protection Area
519.63 km² overlap
Ahrgebirge
IUCN Not ReportedSpecial Protection Area (Birds Directive)
251.56 km² overlap
Landscape Protection Area
45.78 km² overlap
Kehlberg
IUCN VLandscape Protection Area
33.25 km² overlap
Landscape Protection Area
29.88 km² overlap
Landscape Protection Area
25.57 km² overlap
Gewässersystem der Ahr
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
25.41 km² overlap
Ahrtal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.58 km² overlap
Nature Reserve
11.01 km² overlap
21 more protected areassorted by overlap area
Landscape Protection Area
10.87 km² overlap
LSG-Rohrer Kalkmulde
IUCN VLandscape Protection Area
9.51 km² overlap
Gerolsteiner Kalkeifel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.69 km² overlap
LSG-Eichholzruecken
IUCN VLandscape Protection Area
8.12 km² overlap
Landscape Protection Area
7.72 km² overlap
Landscape Protection Area
6.67 km² overlap
Nature Reserve
6.67 km² overlap
Obere Kyll und Kalkmulden der Nordeifel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.42 km² overlap
Vogelschutzgebiet Ahrgebirge
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.81 km² overlap
LSG-Ahrdorfer Kalkmulde
IUCN VLandscape Protection Area
5.15 km² overlap
NSG Westliches Ahrgebiet
IUCN IVNature Reserve
5.13 km² overlap
Wacholderheiden der Osteifel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.81 km² overlap
LSG-Dahlem
IUCN VLandscape Protection Area
4.67 km² overlap
Nature Reserve
4.65 km² overlap
Vulkaneifel
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.51 km² overlap
Nature Reserve
3.65 km² overlap
LSG-Rheinbacher Osteifel
IUCN VLandscape Protection Area
3.29 km² overlap
Wälder am Hohn
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.87 km² overlap
Nature Reserve
2.78 km² overlap
Aremberg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.41 km² overlap
Nature Reserve
2.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 567 distinct species · 143 078 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Ahr : 16 espèces reliées par 147 interactions GloBI sur 6 types (connectance 31.6%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,0°C
Annual rain
866mm
Moisture idx (CMI)
0,22
Runoff
264mm/an
PET
672mm
AET
562mm
Mean slope
7,1°
Water table
395cm
Forest
55%
Crops
11%
Urban
5%
Protected
84%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)