HydroBASINS lev08 watershed · #2080022970
Bassin de Bergsche Maas
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 18 administrative regions : 's-Hertogenbosch, Alphen-Chaam, Altena, Breda, Dongen +13
Sub-basin area
728,6km²
Upstream area
32 770,7km²
Discharge
408,94m³/s
Mean elev.
3m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Maas275 km²
- Bassin de Oude Dieze0 km²
18 dept-equivalent regions (GADM L2)
- 172.3 km²23.6% of basin
- 93.4 km²12.8% of basin
- 67.8 km²9.3% of basin
- 56.9 km²7.8% of basin
- 54.7 km²7.5% of basin
- 51.0 km²7.0% of basin
- 41.6 km²5.7% of basin
- 36.9 km²5.0% of basin
10 moreFull L2 list
- Gilze en Rijen34.7 km² · 4.7%
- Geertruidenberg29.8 km² · 4.1%
- Dongen29.7 km² · 4.1%
- Maasdriel16.7 km² · 2.3%
- Zaltbommel15.1 km² · 2.1%
- Alphen-Chaam14.3 km² · 1.9%
- Goirle8.5 km² · 1.2%
- 's-Hertogenbosch4.6 km² · 0.6%
- Moerdijk3.7 km² · 0.5%
- Breda0.0 km² · 0.0%
15 intersecting protected areas
NNN-NB
IUCN Not AssignedNature Reserves owned by professional nature management organizations
151.13 km² overlap
Biesbosch
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
80.91 km² overlap
Biesbosch
IUCN IVNature Conservation Act
80.91 km² overlap
Biesbosch
IUCN IIWetland of International Importance (Ramsar Site)
80.91 km² overlap
Biesbosch
IUCN Not ReportedSpecial Protection Area (Birds Directive)
79.29 km² overlap
De Biesbosch
IUCN IINational Park
75.38 km² overlap
NNN-ZH
IUCN Not AssignedNature Reserves owned by professional nature management organizations
14.62 km² overlap
Loonse en Drunense Duinen & Leemkuilen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.33 km² overlap
Nature Conservation Act
10.33 km² overlap
6 more protected areassorted by overlap area
De Loonse en Drunense Duinen
IUCN IINational Park
9.45 km² overlap
Langstraat
IUCN IVNature Conservation Act
5.06 km² overlap
Langstraat
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.06 km² overlap
Nature Conservation Act
2.34 km² overlap
Loevestein, Pompveld & Kornsche Boezem
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.34 km² overlap
NNN-GE
IUCN Not AssignedNature Reserves owned by professional nature management organizations
2.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 177 distinct species · 3 061 373 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Bergsche Maas : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 6 types (connectance 15.2%, filtre Serrano α=0.2). 8 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°
9,6°C
Annual rain
791mm
Moisture idx (CMI)
0,13
Runoff
460mm/an
PET
692mm
AET
543mm
Mean slope
0,2°
Water table
7cm
Forest
6%
Crops
25%
Urban
45%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)