HydroBASINS lev08 watershed · #2080350590
Bassin de Shannon
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 : Ballinasloe, Birr, Loughrea, Nenagh
Sub-basin area
251,3km²
Upstream area
8 925,2km²
Discharge
155,61m³/s
Mean elev.
50m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Little Brosna557 km²
- Bassin de Shannon149 km²
4 dept-equivalent regions (GADM L2)
- 152.7 km²60.5% of basin
- 97.2 km²38.5% of basin
- 2.4 km²0.9% of basin
- 0.0 km²0.0% of basin
15 intersecting protected areas
Lough Derg, North-east Shore SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.39 km² overlap
Lough Derg (Shannon) SPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.55 km² overlap
Middle Shannon Callows SPA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.68 km² overlap
River Shannon Callows SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.63 km² overlap
Kilcarren-Firville Bog SAC
IUCN Not ReportedSite of Community Importance (Habitats Directive)
6.77 km² overlap
Redwood Bog SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.53 km² overlap
Meeneen Bog NHA
IUCN IVNatural Heritage Area
2.17 km² overlap
Arragh More Bog NHA
IUCN IVNatural Heritage Area
1.45 km² overlap
Capira/Derrew Bog NHA
IUCN IVNatural Heritage Area
1.19 km² overlap
6 more protected areassorted by overlap area
Ballymacegan Bog NHA
IUCN IVNatural Heritage Area
1.07 km² overlap
Moorfield Bog NHA
IUCN IVNatural Heritage Area
0.92 km² overlap
Lorrha Bog NHA
IUCN IVNatural Heritage Area
0.82 km² overlap
Arragh More (Derrybreen) Bog SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.74 km² overlap
Ardgraigue Bog SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.63 km² overlap
Liskeenan Fen SAC
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.44 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
994 distinct species · 4 680 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 Shannon : 27 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 6 types (connectance 14.3%, filtre Serrano α=0.2). 9 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°
9,3°C
Annual rain
945mm
Moisture idx (CMI)
0,32
Runoff
580mm/an
PET
640mm
AET
546mm
Mean slope
0,8°
Water table
43cm
Forest
4%
Crops
17%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)