HydroBASINS lev08 watershed · #7080013970
Bassin de Cottaneva 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 2 administrative regions : Humboldt, Mendocino
Sub-basin area
504,3km²
Upstream area
504,3km²
Discharge
12,46m³/s
Mean elev.
318m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 324.6 km²64.3% of basin
- Humboldt157.7 km²31.2% of basin
17 intersecting protected areas
King Range
IUCN VNational Conservation Area
145.15 km² overlap
King Range
IUCN IbWilderness Area
125.40 km² overlap
Usal Forest
IUCN Not AssignedConservation Easement
74.63 km² overlap
Sinkyone
IUCN IbWilderness State Park
29.56 km² overlap
Shady Dell
IUCN VPrivate Conservation
3.75 km² overlap
Marine Protected Area
1.57 km² overlap
Cape Vizcaino
IUCN VPrivate Conservation
1.51 km² overlap
Marine Protected Area
1.46 km² overlap
Marine Protected Area
1.42 km² overlap
8 more protected areassorted by overlap area
Marine Protected Area
0.99 km² overlap
Four Corners aka Brown
IUCN Not AssignedConservation Easement
0.37 km² overlap
California Coastal
IUCN VNational Monument
0.10 km² overlap
Seaside
IUCN VBeach
0.05 km² overlap
Marine Protected Area
0.03 km² overlap
Marine Protected Area
0.03 km² overlap
Marine Protected Area
0.02 km² overlap
Rocks And Islands
IUCN IbWilderness Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 420 distinct species · 82 386 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Cottaneva Creek : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 2 types (connectance 6.6%, filtre Serrano α=0.2). 7 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 708mm
Moisture idx (CMI)
0,38
Runoff
1 211mm/an
PET
1 026mm
AET
648mm
Mean slope
18,2°
Water table
579cm
Forest
99%
Crops
1%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)