HydroBASINS lev08 watershed · #2080405700
Bassin de Dyle
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 : Brabant Wallon, Bruxelles, Hainaut, Namur, Vlaams Brabant
Sub-basin area
910,6km²
Upstream area
910,6km²
Discharge
12,09m³/s
Mean elev.
99m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 569.1 km²62.3% of basin
- 327.1 km²35.8% of basin
- 12.9 km²1.4% of basin
- 3.4 km²0.4% of basin
- 1.3 km²0.1% of basin
30 intersecting protected areas
Special Areas of Conservation (Habitats Directive)
37.83 km² overlap
Zoniënwoud
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.29 km² overlap
NBP-VB-20-0113 type 4
IUCN IVNature management plan type 4 (Flemish Region)
17.74 km² overlap
NBP-VB-19-0167 type 4
IUCN IVNature management plan type 4 (Flemish Region)
17.04 km² overlap
Het Meerdaalwoud
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
15.95 km² overlap
De Dijlevallei
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
15.27 km² overlap
Het Zoniënwoud
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
14.12 km² overlap
De Dijlevallei
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.49 km² overlap
Vallée de la Thyle
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.12 km² overlap
21 more protected areassorted by overlap area
Vallée de la Thyle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.12 km² overlap
Vallées de l'Argentine et de la Lasne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
8.22 km² overlap
Vallées de l'Argentine et de la Lasne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.22 km² overlap
Sources de la Dyle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.28 km² overlap
Sources de la Dyle
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.28 km² overlap
Dijle-, Laan- en Ijsevallei
IUCN IVNature management plan type 4 (Flemish Region)
5.54 km² overlap
NBP-VB-19-0167 type 2
IUCN VINature management plan type 2 (Flemish Region)
5.50 km² overlap
Vallée du Train
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.89 km² overlap
Vallée du Train
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.89 km² overlap
Vallée de la Lasne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.30 km² overlap
Vallée de la Lasne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.30 km² overlap
Valleien van de Winge en de Motte met valleihellingen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.37 km² overlap
Vallée de la Dyle à Ottignies
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.05 km² overlap
Vallée de la Dyle à Ottignies
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.05 km² overlap
La Forêt de Soignes avec lisières et domaines boisés avoisinants et la Vallée de la Woluwe - complexe Forêt de Soignes - Vallée de la Woluwe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.79 km² overlap
NBP-VB-23-0011 type 4
IUCN IVNature management plan type 4 (Flemish Region)
2.50 km² overlap
NBP-VB-20-0013 type 2
IUCN VINature management plan type 2 (Flemish Region)
2.50 km² overlap
Demervallei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.43 km² overlap
Het Wijgmaalbroek - Kwellenberg - Gevel
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
2.29 km² overlap
Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
2.08 km² overlap
Vallée de la Nethen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.95 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 298 distinct species · 1 557 694 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Dyle : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 6 types (connectance 13.2%, filtre Serrano α=0.2). 12 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°
9,9°C
Annual rain
817mm
Moisture idx (CMI)
0,07
Runoff
417mm/an
PET
760mm
AET
582mm
Mean slope
2,0°
Water table
131cm
Forest
9%
Crops
41%
Urban
41%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)