HydroBASINS lev08 watershed · #7080707710
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 : Imperial, La Paz, Yuma
Sub-basin area
2 268,5km²
Upstream area
466 505,3km²
Discharge
405,5m³/s
Mean elev.
219m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 3 basins
- Bassin de Milpitas Wash1238 km²
- Bassin · #7080074270160 km²
- Bassin de Colorado River157 km²
3 dept-equivalent regions (GADM L2)
- 1053.7 km²46.5% of basin
- 736.5 km²32.5% of basin
- 477.2 km²21.0% of basin
12 intersecting protected areas
Indian Pass
IUCN IbWilderness Area
160.54 km² overlap
Little Picacho
IUCN IbWilderness Area
143.78 km² overlap
Trigo Mountain (North)
IUCN IbWilderness Area
124.41 km² overlap
Kofa
IUCN IVNational Wildlife Refuge
73.40 km² overlap
Kofa
IUCN IbWilderness Area
73.20 km² overlap
Imperial Refuge
IUCN IbWilderness Area
63.73 km² overlap
Picacho Peak
IUCN IbWilderness Area
30.99 km² overlap
Buzzards Peak
IUCN IbWilderness Area
11.69 km² overlap
Cibola
IUCN IVNational Wildlife Refuge
9.64 km² overlap
3 more protected areassorted by overlap area
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 925 distinct species · 147 073 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 Colorado River : 26 espèces reliées par 63 interactions GloBI sur 4 types (connectance 11.2%, 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°
22,4°C
Annual rain
98mm
Moisture idx (CMI)
-0,94
Runoff
7mm/an
PET
1 755mm
AET
81mm
Mean slope
4,0°
Water table
1 028cm
Forest
2%
Crops
3%
Urban
0%
Protected
28%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)