HydroBASINS lev08 watershed · #7080617620
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 : Fresno, Madera
Sub-basin area
1 587,5km²
Upstream area
5 265,2km²
Discharge
46,49m³/s
Mean elev.
298m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 902.5 km²56.8% of basin
- 685.5 km²43.2% of basin
30 intersecting protected areas
Preserve
13.48 km² overlap
Easement
12.35 km² overlap
Black Mountain Preserve, Expansion 4 (Kimbler)
IUCN Not AssignedPreserve
8.67 km² overlap
San Joaquin River
IUCN VEcological Reserve
3.59 km² overlap
Big Table Mountain
IUCN VEcological Reserve
3.08 km² overlap
Preserve
2.85 km² overlap
Kerman
IUCN VEcological Reserve
2.76 km² overlap
Backbone Creek
IUCN IaResearch Natural Area
1.57 km² overlap
Black Mountain
IUCN VEasement
1.37 km² overlap
21 more protected areassorted by overlap area
River Vista
IUCN VPrivate Conservation
0.65 km² overlap
Wagner
IUCN VPrivate Conservation
0.45 km² overlap
Schneider Property
IUCN VPrivate Conservation
0.42 km² overlap
San Joaquin
IUCN IaResearch Natural Area
0.30 km² overlap
Riverside
IUCN VRestoration Area
0.06 km² overlap
River Center
IUCN VPrivate Conservation
0.03 km² overlap
Open Space24
IUCN VLocal Conservation Area
0.02 km² overlap
Open Space31
IUCN VLocal Conservation Area
0.02 km² overlap
Alkali Sink
IUCN VEcological Reserve
0.01 km² overlap
Park
0.01 km² overlap
Open Space29
IUCN VLocal Conservation Area
0.01 km² overlap
Open Space30
IUCN VLocal Conservation Area
0.01 km² overlap
Fresno County; H.
IUCN Not AssignedConservation Easement
0.01 km² overlap
Open Space20
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space26
IUCN VLocal Conservation Area
0.00 km² overlap
Dante Corona
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space35
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space27
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space28
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space32
IUCN VLocal Conservation Area
0.00 km² overlap
Open Space22
IUCN VLocal Conservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 395 distinct species · 379 831 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 : 22 espèces reliées par 67 interactions GloBI sur 4 types (connectance 14.4%, filtre Serrano α=0.2). 9 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°
16,2°C
Annual rain
433mm
Moisture idx (CMI)
-0,70
Runoff
200mm/an
PET
1 473mm
AET
358mm
Mean slope
4,6°
Water table
263cm
Forest
48%
Crops
31%
Urban
5%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)