HydroBASINS lev08 watershed · #7080062960
Bassin de Old Brook
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 1 administrative regions : Division No. 3
Sub-basin area
1 321,2km²
Upstream area
1 321,2km²
Discharge
20,1m³/s
Mean elev.
121m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- Division No. 31182.3 km²89.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
313 distinct species · 5 333 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 Old Brook : 24 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 3 types (connectance 13.4%, filtre Serrano α=0.2). 15 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°
4,5°C
Annual rain
1 514mm
Moisture idx (CMI)
0,59
Runoff
1 327mm/an
PET
625mm
AET
610mm
Mean slope
7,9°
Water table
323cm
Forest
37%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)