HydroBASINS lev08 watershed · #7080547860
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 4 administrative regions : Colusa, Glenn, Lake, Mendocino
Sub-basin area
1 806,1km²
Upstream area
1 806,1km²
Discharge
42,27m³/s
Mean elev.
876m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 995.4 km²55.1% of basin
- Lake754.2 km²41.7% of basin
- 55.5 km²3.1% of basin
- 2.6 km²0.1% of basin
8 intersecting protected areas
Berryessa Snow Mountain
IUCN VNational Monument
445.82 km² overlap
Snow Mountain
IUCN IbWilderness
145.55 km² overlap
Sanhedrin
IUCN IbWilderness
41.53 km² overlap
Hale Ridge
IUCN IaResearch Natural Area
3.86 km² overlap
Outlet Creek Ranch
IUCN VPrivate Conservation
2.11 km² overlap
Yuki
IUCN IbWilderness
1.93 km² overlap
Little Lake Valley
IUCN VEasement
0.60 km² overlap
Playground
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 824 distinct species · 108 653 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 Eel River : 17 espèces reliées par 82 interactions GloBI sur 4 types (connectance 17.6%, filtre Serrano α=0.2). 14 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°
11,1°C
Annual rain
1 225mm
Moisture idx (CMI)
0,00
Runoff
722mm/an
PET
1 227mm
AET
632mm
Mean slope
13,6°
Water table
487cm
Forest
93%
Crops
3%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)