HydroBASINS lev08 watershed · #2080318390
Bassin de Crumlin
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 : Antrim and Newtownabbey, Armagh City, Banbridge and Craig, Belfast, Mid Ulster, NA
Sub-basin area
401,4km²
Upstream area
401,4km²
Discharge
9,93m³/s
Mean elev.
61m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 159.6 km²39.6% of basin
- 126.3 km²31.3% of basin
- 105.9 km²26.3% of basin
- 11.1 km²2.8% of basin
- Belfast0.3 km²0.1% of basin
15 intersecting protected areas
Lough Neagh & Lough Beg
IUCN IVWetland of International Importance (Ramsar Site)
147.67 km² overlap
Lough Neagh and Lough Beg
IUCN Not ReportedEmerald Network
124.58 km² overlap
Lough Neagh
IUCN Not ReportedArea of Special Scientific Interest
121.69 km² overlap
Portmore Lough
IUCN IVNature Reserve
3.26 km² overlap
Portmore Lough
IUCN Not ReportedArea of Special Scientific Interest
2.87 km² overlap
Slievenacloy
IUCN Not ReportedArea of Special Scientific Interest
2.47 km² overlap
Montiaghs Moss
IUCN Not ReportedEmerald Network
1.51 km² overlap
Montiaghs Moss
IUCN Not ReportedArea of Special Scientific Interest
1.51 km² overlap
Oxford Island Lough Neagh
IUCN Not ReportedNational Nature Reserve
0.67 km² overlap
6 more protected areassorted by overlap area
Leathemstown
IUCN Not ReportedArea of Special Scientific Interest
0.45 km² overlap
Divis and Black Mountain
IUCN VNature Reserve
0.26 km² overlap
Maghaberry
IUCN Not ReportedArea of Special Scientific Interest
0.06 km² overlap
Lough Neagh Islands
IUCN Not ReportedNature Reserve
0.05 km² overlap
Aghnadarragh
IUCN Not ReportedArea of Special Scientific Interest
0.04 km² overlap
Ballynanaghten
IUCN Not ReportedArea of Special Scientific Interest
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 863 distinct species · 83 651 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Crumlin : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 6 types (connectance 12.9%, 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°
8,7°C
Annual rain
957mm
Moisture idx (CMI)
0,38
Runoff
779mm/an
PET
591mm
AET
519mm
Mean slope
1,1°
Water table
61cm
Forest
8%
Crops
29%
Urban
7%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)