HydroBASINS lev08 watershed · #7080008510
Bassin de San Cristobal Wash
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 5 administrative regions across 2 countries : General Plutarco Elías Calles, Pima, Puerto Peñasco, San Luis Río Colorado, Yuma
Sub-basin area
2 679,3km²
Upstream area
2 679,4km²
Discharge
0,9m³/s
Mean elev.
259m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 902.4 km²33.7% of basin
- 655.5 km²24.5% of basin
- 633.8 km²23.7% of basin
- 453.0 km²16.9% of basin
- 32.7 km²1.2% of basin
11 intersecting protected areas
El Pinacate and Gran Desierto de Altar Biosphere Reserve
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1352.09 km² overlap
Alto Golfo de California y El Pinacate
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1279.75 km² overlap
Biosphere Reserve
1279.32 km² overlap
Cabeza Prieta
IUCN IVNational Wildlife Refuge
1086.05 km² overlap
Cabeza Prieta
IUCN IbWilderness Area
1081.04 km² overlap
Organ Pipe Cactus
IUCN VNational Monument
199.33 km² overlap
Organ Pipe Cactus
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
193.54 km² overlap
Organ Pipe Cactus
IUCN IbWilderness Area
193.34 km² overlap
Humedales de Bahía Adaír
IUCN Not ReportedWetland of International Importance (Ramsar Site)
9.53 km² overlap
2 more protected areassorted by overlap area
Islands and Protected Areas of the Gulf of California
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.45 km² overlap
Biosphere Reserve
0.43 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
840 distinct species · 11 841 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 Cristobal Wash : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 120 interactions GloBI sur 4 types (connectance 10.6%, 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°
21,7°C
Annual rain
132mm
Moisture idx (CMI)
-0,92
Runoff
10mm/an
PET
1 679mm
AET
110mm
Mean slope
2,4°
Water table
538cm
Forest
0%
Crops
0%
Urban
0%
Protected
96%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)