HydroBASINS lev08 watershed · #7080278870
Bassin de Arrow River
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 2 administrative regions : Division No. 15, Division No. 16
Sub-basin area
645,8km²
Upstream area
645,9km²
Discharge
0,68m³/s
Mean elev.
546m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 551.3 km²85.1% of basin
- 96.7 km²14.9% of basin
8 intersecting protected areas
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.65 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.65 km² overlap
Privately Protected Area
0.64 km² overlap
Privately Protected Area
0.53 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.33 km² overlap
W 1/2 SW-31-019-23 W
IUCN IVPrivate Land
0.33 km² overlap
W 1/2 NW-31-019-23 W
IUCN IVPrivate Land
0.29 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
199 distinct species · 1 739 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Arrow River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 4 types (connectance 18.0%, filtre Serrano α=0.2). 11 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°
1,3°C
Annual rain
486mm
Moisture idx (CMI)
-0,35
Runoff
33mm/an
PET
750mm
AET
419mm
Mean slope
0,4°
Water table
7cm
Forest
45%
Crops
62%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)