HydroBASINS lev08 watershed · #7080531860
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 3 administrative regions : Humboldt, Mendocino, Trinity
Sub-basin area
924,5km²
Upstream area
5 823,4km²
Discharge
163,22m³/s
Mean elev.
578m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de North Fork Eel River726 km²
- Bassin de Eel River430 km²
3 dept-equivalent regions (GADM L2)
- Humboldt561.8 km²60.7% of basin
- Trinity318.0 km²34.4% of basin
- 45.7 km²4.9% of basin
1 intersecting protected areas
Mount Lassic
IUCN IbWilderness
0.70 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 312 distinct species · 36 020 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 Eel River : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 68 interactions GloBI sur 4 types (connectance 10.8%, filtre Serrano α=0.2). 11 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°
11,5°C
Annual rain
1 503mm
Moisture idx (CMI)
0,20
Runoff
1 142mm/an
PET
1 195mm
AET
658mm
Mean slope
14,4°
Water table
475cm
Forest
81%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)