Rivière· 134 segments
San Joaquin River
Crosses 7 administrative regions : Contra Costa, Fresno, Madera, Merced, Sacramento +2
Total length
554km
Max discharge
393m³/s
Max Strahler
6
Segments matched
134
River geography7 admin regions · 0 communes
7 administrative regions crossed (GADM L2)
- MaderaCalifornia · United States156.7 kmin this dpt
- San JoaquinCalifornia · United States140.5 kmin this dpt
- FresnoCalifornia · United States134.5 kmin this dpt
- StanislausCalifornia · United States72.1 kmin this dpt
- MercedCalifornia · United States68.6 kmin this dpt
- Contra CostaCalifornia · United States14.4 kmin this dpt
- SacramentoCalifornia · United States7.9 kmin this dpt
30 intersecting protected areas
Ansel Adams
IUCN IbWilderness Area
Grasslands Wildlife Management Area 17
IUCN Not AssignedWildlife Management Area
San Luis
IUCN IVNational Wildlife Refuge
San Joaquin River
IUCN VNational Wildlife Refuge
North Grasslands
IUCN VWildlife Area
Grasslands
IUCN VWildlife Management Area
Reserve Program
Preserve
Easement
21 more protected areassorted by area
Conservation
IUCN Not AssignedEasement
Dos Rios Ranch
IUCN VPrivate Conservation
Reserve Program
Watershed Protection
Wildlife Management Area
Reserve Program
San Joaquin River
IUCN VEcological Reserve
Big Table Mountain
IUCN VEcological Reserve
Preserve
Kinsman Flat
IUCN VWildlife Area
Backbone Creek
IUCN IaResearch Natural Area
West Hilmar
IUCN VWildlife Area
Mainstone II
IUCN Not AssignedConservation Easement
River Vista
IUCN VPrivate Conservation
National Wildlife Refuge
Medford Island
IUCN Not AssignedConservation Easement
Vernalis
IUCN VEcological Reserve
Wagner
IUCN VPrivate Conservation
Schneider Property
IUCN VPrivate Conservation
Oxbow
IUCN VPreserve
Vernalis Riparian Habitat
IUCN Not AssignedConservation Easement
1 page = 1 named river (aggregation of 134 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
122 distinct species · 172 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 San Joaquin River : 39 espèces reliées par 96 interactions GloBI sur 5 types (connectance 9.3%, 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).
Hydrology (HydroRIVERS v10)
Total length
554km
Max discharge
393,0m³/s
Max Strahler
6
Segments matched
134
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.