HydroBASINS lev08 watershed · #7080012660
Bassin de Los Angeles 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 2 administrative regions : Los Angeles, Ventura
Sub-basin area
2 031,9km²
Upstream area
2 031,9km²
Discharge
13,47m³/s
Mean elev.
458m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 2010.2 km²99.0% of basin
- 20.9 km²1.0% of basin
30 intersecting protected areas
San Gabriel Mountains
IUCN VNational Monument
142.04 km² overlap
Open Space
4.75 km² overlap
Deukmejian
IUCN VWilderness
3.35 km² overlap
Open Space
3.29 km² overlap
Chatsworth
IUCN VNature Preserve
2.22 km² overlap
Fond
IUCN VWilderness Preserve
2.02 km² overlap
Open Space
1.82 km² overlap
Magic Mountain
IUCN IbWilderness
1.18 km² overlap
Open Space
1.14 km² overlap
21 more protected areassorted by overlap area
Open Space
1.01 km² overlap
Bagdaserian -
IUCN VLocal Conservation Area
0.57 km² overlap
Open Space
0.56 km² overlap
Fryman Canyon
IUCN VNatural Area
0.25 km² overlap
Westridge-Canyonback
IUCN VWilderness Park
0.24 km² overlap
Pleasant View Ridge
IUCN IbWilderness
0.21 km² overlap
Dominguez Gap
IUCN VWetlands
0.16 km² overlap
Wetlands
0.09 km² overlap
Briar Summit Open Spac
IUCN VOpen Space
0.06 km² overlap
Willows
IUCN VWetland
0.06 km² overlap
Deukmejian
IUCN VWilderness Park
0.05 km² overlap
Tujunga Ponds
IUCN VWildlife Sanctuary
0.05 km² overlap
Cottonwood Canyon
IUCN VPrivate Conservation
0.04 km² overlap
Rosemont
IUCN VPreserve
0.03 km² overlap
Nature Park
0.03 km² overlap
Hilltop LLC HOA
IUCN VPrivate Conservation
0.03 km² overlap
Comstock South LLC HOA
IUCN VPrivate Conservation
0.02 km² overlap
Bagdaserian -
IUCN VConservation Area
0.02 km² overlap
San Gabriel
IUCN IbWilderness
0.01 km² overlap
Pacoima Wash Mrca
IUCN VOpen Space
0.01 km² overlap
Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 560 distinct species · 3 932 827 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Los Angeles River : 26 espèces reliées par 89 interactions GloBI sur 4 types (connectance 11.4%, filtre Serrano α=0.2). 14 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°
16,5°C
Annual rain
450mm
Moisture idx (CMI)
-0,66
Runoff
179mm/an
PET
1 309mm
AET
379mm
Mean slope
7,1°
Water table
381cm
Forest
33%
Crops
1%
Urban
69%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)