HydroBASINS lev08 watershed · #7080515830
Bassin de Bear 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 4 administrative regions : Lassen, Modoc, Shasta, Siskiyou
Sub-basin area
1 859,3km²
Upstream area
1 859,3km²
Discharge
16,2m³/s
Mean elev.
1 390m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1288.5 km²69.2% of basin
- 403.1 km²21.7% of basin
- 169.0 km²9.1% of basin
- 1.2 km²0.1% of basin
9 intersecting protected areas
Timbered Crater
IUCN IbWilderness Study Area
73.19 km² overlap
Reserve Program
16.23 km² overlap
Roseburg Resources - Bear Creek
IUCN Not AssignedConservation Easement
11.41 km² overlap
Reserve Program
2.68 km² overlap
Bascom Pacific - Bear Creek
IUCN Not AssignedConservation Easement
1.40 km² overlap
Fall River Valley (Noel Ranch)
IUCN Not AssignedConservation Easement
1.23 km² overlap
Conservation Easement
0.51 km² overlap
Reserve Program
0.23 km² overlap
Fall River Mills
IUCN VEcological Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 172 distinct species · 76 097 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Bear Creek : 22 espèces reliées par 83 interactions GloBI sur 3 types (connectance 17.8%, filtre Serrano α=0.2). 9 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°
7,9°C
Annual rain
617mm
Moisture idx (CMI)
-0,44
Runoff
294mm/an
PET
1 110mm
AET
510mm
Mean slope
4,0°
Water table
206cm
Forest
96%
Crops
2%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)