HydroBASINS lev08 watershed · #7080603670
Bassin de San Joaquin 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 : Merced, Stanislaus
Sub-basin area
2,6km²
Upstream area
3 604,2km²
Discharge
40,88m³/s
Mean elev.
22m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Merced River194 km²
- Bassin de Adams Ditch178 km²
2 dept-equivalent regions (GADM L2)
- 2.5 km²95.3% of basin
- 0.1 km²4.7% of basin
2 intersecting protected areas
Watershed Protection
1.10 km² overlap
North Grasslands
IUCN VWildlife Area
0.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
286 distinct species · 3 209 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 San Joaquin River : 26 espèces reliées par 119 interactions GloBI sur 4 types (connectance 16.1%, filtre Serrano α=0.2). 13 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°
16,5°C
Annual rain
272mm
Moisture idx (CMI)
-0,82
Runoff
87mm/an
PET
1 481mm
AET
229mm
Mean slope
0,2°
Water table
17cm
Forest
7%
Crops
86%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)