HydroBASINS lev08 watershed · #7080014040
Bassin de Eel 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 1 administrative regions : Humboldt
Sub-basin area
157,6km²
Upstream area
9 366,1km²
Discharge
316,03m³/s
Mean elev.
91m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Van Duzen River1107 km²
- Bassin de Eel River512 km²
1 dept-equivalent regions (GADM L2)
- Humboldt157.8 km²100.0% of basin
4 intersecting protected areas
Headwaters
IUCN VForest Reserve
1.28 km² overlap
Eel River
IUCN VWildlife Area
0.59 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Humboldt, CA
IUCN VConservation Easement
0.19 km² overlap
Watershed Protection
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
962 distinct species · 83 032 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Eel River : 14 espèces reliées par 82 interactions GloBI sur 3 types (connectance 23.4%, filtre Serrano α=0.2). 13 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°
11,6°C
Annual rain
1 372mm
Moisture idx (CMI)
0,39
Runoff
1 117mm/an
PET
832mm
AET
597mm
Mean slope
5,7°
Water table
222cm
Forest
50%
Crops
12%
Urban
8%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)