HydroBASINS lev08 watershed · #7080601560
Bassin de Middle Fork 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 3 administrative regions : Fresno, Madera, Mono
Sub-basin area
847,8km²
Upstream area
847,8km²
Discharge
5,91m³/s
Mean elev.
2 700m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 627.2 km²73.9% of basin
- 214.5 km²25.3% of basin
- 6.5 km²0.8% of basin
7 intersecting protected areas
Ansel Adams
IUCN IbWilderness Area
518.80 km² overlap
John Muir
IUCN IbWilderness
247.12 km² overlap
Devils Postpile
IUCN IIINational Monument
3.24 km² overlap
Yosemite
IUCN IbWilderness Area
1.24 km² overlap
Yosemite
IUCN IINational Park
1.06 km² overlap
Owens River Headwaters
IUCN IbWilderness
0.92 km² overlap
Yosemite National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.77 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 726 distinct species · 54 804 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Middle Fork San Joaquin River : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 5 types (connectance 8.1%, filtre Serrano α=0.2). 16 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°
3,6°C
Annual rain
661mm
Moisture idx (CMI)
-0,19
Runoff
334mm/an
PET
831mm
AET
487mm
Mean slope
16,5°
Water table
638cm
Forest
82%
Crops
1%
Urban
0%
Protected
91%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)