HydroBASINS lev08 watershed · #7080495910
Bassin de Calamus 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 7 administrative regions : Blaine, Brown, Cherry, Garfield, Holt +2
Sub-basin area
2 555,9km²
Upstream area
2 556km²
Discharge
8,49m³/s
Mean elev.
775m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- Brown893.9 km²34.9% of basin
- 790.6 km²30.9% of basin
- Rock482.6 km²18.9% of basin
- 198.4 km²7.7% of basin
- Garfield168.8 km²6.6% of basin
- Blaine24.8 km²1.0% of basin
- Holt0.7 km²0.0% of basin
8 intersecting protected areas
John W. And Louise Seier
IUCN IVNational Wildlife Refuge
9.72 km² overlap
Reserve Program
7.93 km² overlap
Sandhills
IUCN VEasement
7.12 km² overlap
Valentine
IUCN IVNational Wildlife Refuge
2.98 km² overlap
Reserve Program
2.84 km² overlap
Willow Lake B.C.
IUCN VWildlife Management Area
2.08 km² overlap
Wildlife Management Area
0.66 km² overlap
South Twin Lake
IUCN VWildlife Management Area
0.65 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
807 distinct species · 24 335 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Calamus River : 28 espèces reliées par 67 interactions GloBI sur 3 types (connectance 11.9%, filtre Serrano α=0.2). 6 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°
8,7°C
Annual rain
591mm
Moisture idx (CMI)
-0,46
Runoff
117mm/an
PET
1 097mm
AET
505mm
Mean slope
1,1°
Water table
197cm
Forest
1%
Crops
17%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)