HydroBASINS lev08 watershed · #7080013990
Bassin de Mattole 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 2 administrative regions : Humboldt, Mendocino
Sub-basin area
764,1km²
Upstream area
764,3km²
Discharge
34,49m³/s
Mean elev.
418m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Humboldt748.7 km²97.9% of basin
- 16.2 km²2.1% of basin
27 intersecting protected areas
King Range
IUCN VNational Conservation Area
106.14 km² overlap
King Range
IUCN IbWilderness Area
49.39 km² overlap
ERS - Beauter
IUCN Not AssignedConservation Easement
5.55 km² overlap
Mattole River
IUCN VEcological Reserve
5.17 km² overlap
SPI
IUCN Not AssignedCorridor
4.30 km² overlap
Stansberry A
IUCN Not AssignedConservation Easement
2.76 km² overlap
Sinkyone
IUCN IbWilderness State Park
2.13 km² overlap
McKee Creek
IUCN VPrivate Conservation
1.25 km² overlap
Jones
IUCN Not AssignedCorridor
0.96 km² overlap
18 more protected areassorted by overlap area
Anderson Creek
IUCN VPrivate Conservation
0.86 km² overlap
Stansberry B
IUCN Not AssignedCorridor
0.81 km² overlap
Lost River
IUCN VPrivate Conservation
0.78 km² overlap
Carr 1
IUCN Not AssignedCorridor
0.76 km² overlap
Stansberry D
IUCN Not AssignedConservation Easement
0.69 km² overlap
Stansberry C
IUCN Not AssignedConservation Easement
0.56 km² overlap
Sholes 1
IUCN Not AssignedCorridor
0.49 km² overlap
Carr 2
IUCN Not AssignedCorridor
0.42 km² overlap
Four Corners aka Brown
IUCN Not AssignedConservation Easement
0.30 km² overlap
Landergen
IUCN Not AssignedCorridor
0.17 km² overlap
Whitethorn Grove
IUCN VGrove
0.15 km² overlap
Panther Gap 2
IUCN Not AssignedCorridor
0.14 km² overlap
Ransom
IUCN VPrivate Conservation
0.09 km² overlap
Estes
IUCN VPrivate Conservation
0.09 km² overlap
Robbins
IUCN VPrivate Conservation
0.04 km² overlap
Stansberry E
IUCN Not AssignedConservation Easement
0.03 km² overlap
Junction Property
IUCN VPrivate Conservation
0.02 km² overlap
Ancestor Grove
IUCN VGrove
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 504 distinct species · 12 722 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 Mattole River : 39 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 109 interactions GloBI sur 4 types (connectance 9.3%, filtre Serrano α=0.2). 10 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°
10,7°C
Annual rain
1 896mm
Moisture idx (CMI)
0,49
Runoff
1 292mm/an
PET
957mm
AET
643mm
Mean slope
16,1°
Water table
529cm
Forest
88%
Crops
3%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)