HydroBASINS lev08 watershed · #7080711960
Bassin de Colorado 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 across 2 countries : Imperial, Mexicali, Yuma
Sub-basin area
751,4km²
Upstream area
616 129,6km²
Discharge
155,98m³/s
Mean elev.
98m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Colorado River2269 km²
- Bassin de Gila Gravity Main Canal259 km²
3 dept-equivalent regions (GADM L2)
- 428.1 km²57.0% of basin
- 233.1 km²31.0% of basin
- 89.8 km²12.0% of basin
3 intersecting protected areas
Sistema de Humedales Remanentes del Delta del Río Colorado
IUCN Not ReportedWetland of International Importance (Ramsar Site)
31.83 km² overlap
Little Picacho
IUCN IbWilderness Area
14.59 km² overlap
Headstream & McVey
IUCN VRiparian
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 948 distinct species · 146 298 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Colorado River : 27 espèces reliées par 83 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 11 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°
22,6°C
Annual rain
76mm
Moisture idx (CMI)
-0,96
Runoff
4mm/an
PET
1 831mm
AET
61mm
Mean slope
1,3°
Water table
574cm
Forest
0%
Crops
23%
Urban
7%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)