HydroBASINS lev08 watershed · #7080013840
Bassin de Garcia 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 : Mendocino, Sonoma
Sub-basin area
703,5km²
Upstream area
703,5km²
Discharge
0,02m³/s
Mean elev.
301m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 689.3 km²97.9% of basin
- 0.2 km²0.0% of basin
15 intersecting protected areas
Brush Creek Conservation Easement (Miller Trust)
IUCN Not AssignedConservation Easement
103.88 km² overlap
Garcia River
IUCN VForest
95.57 km² overlap
Marine Protected Area
10.82 km² overlap
California Coastal
IUCN VNational Monument
7.27 km² overlap
Marine Protected Area
7.06 km² overlap
Monument
2.40 km² overlap
Marine Protected Area
1.22 km² overlap
North Fork Gualala River
IUCN VEasement
1.20 km² overlap
Gualala River
IUCN VForest
1.16 km² overlap
6 more protected areassorted by overlap area
Mailliard Redwoods State
IUCN VNatural Reserve
0.97 km² overlap
Marine Protected Area
0.73 km² overlap
Marine Protected Area
0.56 km² overlap
Pelican Bluffs
IUCN VReserve
0.31 km² overlap
Redwood Coast
IUCN VRecreation Center
0.05 km² overlap
Hearn Gulch
IUCN VPrivate Conservation
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 963 distinct species · 310 429 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Garcia River : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 2 types (connectance 8.1%, 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°
11,4°C
Annual rain
1 191mm
Moisture idx (CMI)
0,14
Runoff
776mm/an
PET
1 019mm
AET
616mm
Mean slope
13,6°
Water table
492cm
Forest
96%
Crops
1%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)