HydroBASINS lev08 watershed · #2080376170
Bassin de Blackwater
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 4 administrative regions : Comeragh, Dungarvan-Lismore, Fermoy, Tipperary-Cahir-Cashel
Sub-basin area
548,4km²
Upstream area
2 682,9km²
Discharge
74,55m³/s
Mean elev.
152m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Funshion367 km²
- Bassin de Blackwater108 km²
4 dept-equivalent regions (GADM L2)
- 408.9 km²74.3% of basin
- 105.7 km²19.2% of basin
- 35.6 km²6.5% of basin
- 0.3 km²0.1% of basin
2 intersecting protected areas
Blackwater River (Cork/Waterford) SAC
IUCN Not ReportedSite of Community Importance (Habitats Directive)
24.13 km² overlap
Blackwater Callows SPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 493 distinct species · 15 406 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Blackwater : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 6 types (connectance 11.1%, filtre Serrano α=0.2). 10 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°
9,4°C
Annual rain
1 183mm
Moisture idx (CMI)
0,49
Runoff
781mm/an
PET
604mm
AET
552mm
Mean slope
4,5°
Water table
313cm
Forest
1%
Crops
21%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)