HydroBASINS lev08 watershed · #7080531120
Bassin de South Fork Cottonwood 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 3 administrative regions : Shasta, Tehama, Trinity
Sub-basin area
2 457,8km²
Upstream area
2 457,8km²
Discharge
41,18m³/s
Mean elev.
673m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 1464.8 km²59.5% of basin
- 981.2 km²39.9% of basin
- Trinity14.6 km²0.6% of basin
4 intersecting protected areas
Yolla Bolly-Middle Eel
IUCN IbWilderness
188.85 km² overlap
Whiskeytown-Shasta-Trinity
IUCN VINational Recreation Area
3.52 km² overlap
Yolla Bolly Contiguous
IUCN IbWilderness Study Area
2.39 km² overlap
Wildlife Area
1.85 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 876 distinct species · 35 028 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 South Fork Cottonwood Creek : 25 espèces reliées par 106 interactions GloBI sur 4 types (connectance 13.6%, filtre Serrano α=0.2). 15 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°
13,3°C
Annual rain
1 011mm
Moisture idx (CMI)
-0,21
Runoff
543mm/an
PET
1 304mm
AET
621mm
Mean slope
10,5°
Water table
399cm
Forest
87%
Crops
5%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)