HydroBASINS lev08 watershed · #7080686190
Bassin de Perris Valley Storm Drain
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 1 administrative regions : Riverside
Sub-basin area
241,2km²
Upstream area
241,3km²
Discharge
1,17m³/s
Mean elev.
518m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- 241.1 km²100.0% of basin
2 intersecting protected areas
San Jacinto
IUCN VWildlife Area
2.62 km² overlap
Motte Rimrock
IUCN VReserve
1.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 442 distinct species · 158 424 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Perris Valley Storm Drain : 24 espèces reliées par 75 interactions GloBI sur 3 types (connectance 11.9%, filtre Serrano α=0.2). 12 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°
17,1°C
Annual rain
342mm
Moisture idx (CMI)
-0,77
Runoff
146mm/an
PET
1 509mm
AET
291mm
Mean slope
3,1°
Water table
399cm
Forest
6%
Crops
7%
Urban
54%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)