HydroBASINS lev08 watershed · #7080545840
Bassin de Casselman 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 : Garrett, Somerset
Sub-basin area
1 203,7km²
Upstream area
1 203,7km²
Discharge
21,51m³/s
Mean elev.
719m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Somerset956.1 km²79.4% of basin
- 248.7 km²20.6% of basin
12 intersecting protected areas
Mt. Davis
IUCN VINatural Area
2.42 km² overlap
Private Conservation
1.08 km² overlap
Finzel Swamp Fee
IUCN VPrivate Conservation Land
0.68 km² overlap
Private Conservation Land
0.52 km² overlap
Ging
IUCN VPrivate Conservation
0.36 km² overlap
Natural Area
0.20 km² overlap
Reserve Program
0.13 km² overlap
DNR
IUCN Not AssignedConservation Easement
0.13 km² overlap
The Glades Fee
IUCN VPrivate Conservation Land
0.13 km² overlap
3 more protected areassorted by overlap area
Weld
IUCN VPrivate Conservation
0.10 km² overlap
WPC
IUCN VEasement
0.04 km² overlap
Laurel Hill
IUCN IIIState Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 386 distinct species · 233 337 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 Casselman River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 71 interactions GloBI sur 3 types (connectance 9.6%, 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°
8,0°C
Annual rain
1 108mm
Moisture idx (CMI)
0,12
Runoff
559mm/an
PET
971mm
AET
805mm
Mean slope
5,3°
Water table
313cm
Forest
63%
Crops
23%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)