HydroBASINS lev08 watershed · #2080054280

Bassin de Colligan

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 6 administrative regions : Comeragh, Dungarvan-Lismore, East Cork, New Ross, Piltown +1

Coastal basinPfafstetter: 23400330

Sub-basin area

713,2km²

Upstream area

713,2km²

Discharge

0,34m³/s

Mean elev.

100m

Administrative coverage

6 dept-equivalent regions (GADM L2)

Dungarvan-Lismore
Waterford · Ireland
288.9 km²
40.3% of basin
Comeragh
Waterford · Ireland
269.8 km²
37.7% of basin
Waterford City
Waterford · Ireland
117.3 km²
16.4% of basin
New Ross
Wexford · Ireland
0.1 km²
0.0% of basin
Piltown
Kilkenny · Ireland
0.1 km²
0.0% of basin
East Cork
Cork · Ireland
0.0 km²
0.0% of basin

17 intersecting protected areas

Comeragh Mountains SAC
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
30.82 km² overlap
Mid-Waterford Coast SPA
IUCN Not Reported
Special Protection Area (Birds Directive)
9.37 km² overlap
Dungarvan Harbour SPA
IUCN Not Reported
Special Protection Area (Birds Directive)
8.42 km² overlap
Tramore Dunes and Backstrand SAC
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
7.22 km² overlap
Helvick Head to Ballyquin SPA
IUCN Not Reported
Special Protection Area (Birds Directive)
7.12 km² overlap
Tramore Dunes and Backstrand
IUCN Not Reported
Marine Protected Area (OSPAR)
7.05 km² overlap
Tramore Back Strand SPA
IUCN Not Reported
Special Protection Area (Birds Directive)
6.36 km² overlap
Dungarvan Harbour
IUCN IV
Wetland of International Importance (Ramsar Site)
5.61 km² overlap
River Barrow and River Nore SAC
IUCN Not Reported
Site of Community Importance (Habitats Directive)
5.05 km² overlap

8 more protected areassorted by overlap area

Tramore Backstrand
IUCN Not Reported
Wetland of International Importance (Ramsar Site)
4.38 km² overlap
Blackwater River (Cork/Waterford) SAC
IUCN Not Reported
Site of Community Importance (Habitats Directive)
1.94 km² overlap
Blackwater Estuary SPA
IUCN Not Reported
Special Protection Area (Birds Directive)
1.52 km² overlap
Blackwater Estuary
IUCN IV
Wetland of International Importance (Ramsar Site)
1.32 km² overlap
Helvick Head SAC
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.32 km² overlap
Lower River Suir SAC
IUCN Not Reported
Site of Community Importance (Habitats Directive)
0.51 km² overlap
Ardmore Head SAC
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.30 km² overlap
Glendine Wood SAC
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.20 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 479 distinct species · 45 463 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydroclimate (BasinATLAS lev08)

Mean T°

9,6°C

Annual rain

1 130mm

Moisture idx (CMI)

0,45

Runoff

755mm/an

PET

616mm

AET

551mm

Mean slope

3,8°

Water table

230cm

Forest

Crops

23%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)