HydroBASINS lev08 watershed · #7080547870
Bassin de Middle Fork 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 5 administrative regions : Glenn, Lake, Mendocino, Tehama, Trinity
Sub-basin area
1 937,5km²
Upstream area
1 937,5km²
Discharge
45,43m³/s
Mean elev.
1 121m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 1478.2 km²76.2% of basin
- Trinity296.7 km²15.3% of basin
- 150.9 km²7.8% of basin
- Lake13.0 km²0.7% of basin
- 0.7 km²0.0% of basin
11 intersecting protected areas
Yolla Bolly-Middle Eel
IUCN IbWilderness
401.88 km² overlap
Yuki
IUCN IbWilderness
223.63 km² overlap
Yuki
IUCN IbWilderness Area
73.03 km² overlap
Eel, California
IUCN VWild and Scenic River
27.86 km² overlap
Wild and Scenic River
26.52 km² overlap
Eden Valley
IUCN IbWilderness Study Area
26.21 km² overlap
Yolla Bolly-Middle Eel
IUCN IbWilderness Area
4.23 km² overlap
Berryessa Snow Mountain
IUCN VNational Monument
3.57 km² overlap
Sanhedrin
IUCN IbWilderness
1.63 km² overlap
2 more protected areassorted by overlap area
Thatcher Ridge
IUCN IbWilderness Study Area
0.61 km² overlap
Doll Basin
IUCN IaResearch Natural Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 103 distinct species · 40 392 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Middle Fork Eel River : 22 espèces reliées par 109 interactions GloBI sur 5 types (connectance 13.3%, filtre Serrano α=0.2). 19 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°
10,0°C
Annual rain
1 249mm
Moisture idx (CMI)
0,05
Runoff
724mm/an
PET
1 178mm
AET
622mm
Mean slope
14,2°
Water table
480cm
Forest
95%
Crops
1%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)