HydroBASINS lev08 watershed · #2080430240
Bassin de Welzbach
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 2 administrative regions : Mainz-Bingen, Rheingau-Taunus-Kreis
Sub-basin area
129,5km²
Upstream area
98 873,8km²
Discharge
1 720,21m³/s
Mean elev.
209m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rhein380 km²
- Bassin de Selz367 km²
2 dept-equivalent regions (GADM L2)
- 65.6 km²50.5% of basin
- 64.4 km²49.5% of basin
30 intersecting protected areas
Landscape Protection Area
43.70 km² overlap
Ober-Hilbersheimer Plateau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.34 km² overlap
Rheinaue Bingen-Ingelheim
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.28 km² overlap
Rheinniederung Mainz-Bingen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.50 km² overlap
Inselrhein
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.86 km² overlap
Rheinauen zwischen Eltville und Bingen
IUCN Not ReportedWetland of International Importance (Ramsar Site)
3.58 km² overlap
Fulderaue - Ilmenaue
IUCN IVNature Reserve
3.38 km² overlap
Wanderfischgebiete im Rhein
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.82 km² overlap
Landscape Protection Area
1.67 km² overlap
21 more protected areassorted by overlap area
Dünen- und Sandgebiet Mainz-Ingelheim
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.64 km² overlap
Weinberge zwischen Rüdesheim und Lorchhausen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.37 km² overlap
Ingelheimer Dünen und Sande
IUCN IVNature Reserve
1.25 km² overlap
Nordausläufer Westerberg
IUCN IVNature Reserve
0.74 km² overlap
Gau-Algesheimer Kopf
IUCN IVNature Reserve
0.46 km² overlap
Jakobsberg
IUCN IVNature Reserve
0.33 km² overlap
Nature Reserve
0.29 km² overlap
Ebental bei Rüdesheim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Ebental bei Rüdesheim
IUCN IVNature Reserve
0.28 km² overlap
Rüdesheimer Aue
IUCN IVNature Reserve
0.27 km² overlap
Rheinwiesen von Oestrich-Winkel und Geisenheim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.26 km² overlap
Vollradser Wäldchen
IUCN IVNature Reserve
0.18 km² overlap
Nature Reserve
0.14 km² overlap
Geisenheimer Heide
IUCN IVNature Reserve
0.10 km² overlap
Geisenheimer Heide
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Rüdesheimer Aue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Selztal
IUCN VLandscape Protection Area
0.07 km² overlap
Winkeler Aue
IUCN IVNature Reserve
0.07 km² overlap
Winkeler Aue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.06 km² overlap
Sandlache
IUCN IVNature Reserve
0.06 km² overlap
Nature Reserve
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 083 distinct species · 77 604 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Welzbach : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 128 interactions GloBI sur 5 types (connectance 20.3%, filtre Serrano α=0.2). 17 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°
9,0°C
Annual rain
611mm
Moisture idx (CMI)
-0,20
Runoff
203mm/an
PET
765mm
AET
504mm
Mean slope
4,0°
Water table
285cm
Forest
24%
Crops
38%
Urban
40%
Protected
36%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)