HydroBASINS lev08 watershed · #7080339390
Bassin de Arrow Creek
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 : Chouteau, Fergus
Sub-basin area
0,7km²
Upstream area
2 989,1km²
Discharge
7,84m³/s
Mean elev.
752m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arrow Creek1039 km²
- Bassin de Arrow Creek141 km²
2 dept-equivalent regions (GADM L2)
- 0.5 km²72.1% of basin
- 0.2 km²27.9% of basin
2 intersecting protected areas
Upper Missouri
IUCN VNational Wild & Scenic River
0.70 km² overlap
National Monument
0.70 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
97 distinct species · 302 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 Arrow Creek : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 4 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°
7,2°C
Annual rain
325mm
Moisture idx (CMI)
-0,69
Runoff
64mm/an
PET
1 055mm
AET
286mm
Mean slope
3,6°
Water table
64cm
Forest
40%
Crops
26%
Urban
0%
Protected
31%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)