HydroBASINS lev08 watershed · #7080013830
Bassin de Gualala River - Wheatfield Fork
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
769,3km²
Upstream area
769,4km²
Discharge
20,87m³/s
Mean elev.
317m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 570.4 km²74.1% of basin
- 199.4 km²25.9% of basin
11 intersecting protected areas
Buckeye
IUCN VForest
79.58 km² overlap
Gualala River
IUCN VForest
53.71 km² overlap
North Fork Gualala River
IUCN VEasement
53.65 km² overlap
Reserve
2.96 km² overlap
Stewarts Point Ranch
IUCN VPrivate Conservation
1.59 km² overlap
Garcia River
IUCN VForest
0.63 km² overlap
Brush Creek Conservation Easement (Miller Trust)
IUCN Not AssignedConservation Easement
0.59 km² overlap
The Cedars
IUCN VArea of Critical Environmental Concern
0.44 km² overlap
County of Sonoma
IUCN Not AssignedEasement
0.18 km² overlap
2 more protected areassorted by overlap area
Marine Protected Area
0.09 km² overlap
California Coastal
IUCN VNational Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 885 distinct species · 231 217 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 Gualala River - Wheatfield Fork : 34 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 2 types (connectance 6.5%, filtre Serrano α=0.2). 6 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°
12,0°C
Annual rain
1 178mm
Moisture idx (CMI)
0,07
Runoff
781mm/an
PET
1 087mm
AET
620mm
Mean slope
14,4°
Water table
551cm
Forest
92%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)