HydroBASINS lev08 watershed · #7080686390
Bassin de Santiago Creek
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 : Orange, Riverside
Sub-basin area
239,1km²
Upstream area
239,1km²
Discharge
0,91m³/s
Mean elev.
528m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Orange234.4 km²98.0% of basin
- 4.7 km²2.0% of basin
7 intersecting protected areas
Mountain
IUCN Not AssignedPark
38.61 km² overlap
Fremont Canyon
IUCN VNature Preserve
15.26 km² overlap
Mariposa
IUCN VReserve
3.59 km² overlap
Silverado Ridge
IUCN VPreserve
2.72 km² overlap
Wildlife Sanctuary
2.05 km² overlap
Coal Canyon
IUCN VEcological Reserve
0.21 km² overlap
Saddle Creek
IUCN VPrivate Conservation
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 906 distinct species · 559 914 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 Santiago Creek : 28 espèces reliées par 84 interactions GloBI sur 5 types (connectance 9.8%, 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°
16,1°C
Annual rain
507mm
Moisture idx (CMI)
-0,62
Runoff
125mm/an
PET
1 357mm
AET
424mm
Mean slope
12,8°
Water table
624cm
Forest
60%
Crops
2%
Urban
14%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)