HydroBASINS lev08 watershed · #7080713980
Bassin de San Pedro 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 : Cochise, Graham, Pima
Sub-basin area
535,5km²
Upstream area
7 596,6km²
Discharge
3m³/s
Mean elev.
1 249m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de San Pedro River587 km²
- Bassin de Wildcat Canyon299 km²
3 dept-equivalent regions (GADM L2)
- 273.6 km²51.1% of basin
- 260.4 km²48.7% of basin
- Graham1.2 km²0.2% of basin
10 intersecting protected areas
Rincon Mountain
IUCN IbWilderness
65.42 km² overlap
Saguaro
IUCN IINational Park
36.53 km² overlap
Saguaro
IUCN IbWilderness Area
36.51 km² overlap
Muleshoe Ranch
IUCN VPreserve
6.07 km² overlap
A7 Ranch
IUCN VConservation Easement
1.92 km² overlap
San Pedro River Ecosystem Cascabel 2
IUCN Not AssignedConservation Easement
0.28 km² overlap
San Pedro Ecosystem
IUCN VConservation Easement
0.25 km² overlap
Local Land Trust Preserve
0.25 km² overlap
Redfield Canyon (North)
IUCN IbWilderness Area
0.08 km² overlap
1 more protected areassorted by overlap area
A-7 Ranch
IUCN VLocal Conservation Area
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 809 distinct species · 44 494 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Pedro River : 26 espèces reliées par 65 interactions GloBI sur 4 types (connectance 11.6%, filtre Serrano α=0.2). 8 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°
16,8°C
Annual rain
400mm
Moisture idx (CMI)
-0,74
Runoff
11mm/an
PET
1 555mm
AET
337mm
Mean slope
7,9°
Water table
795cm
Forest
59%
Crops
0%
Urban
0%
Protected
23%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)