HydroBASINS lev08 watershed · #7080012380
Bassin de San Dieguito 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 1 administrative regions : San Diego
Sub-basin area
884km²
Upstream area
884,1km²
Discharge
3,37m³/s
Mean elev.
533m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 883.5 km²100.0% of basin
29 intersecting protected areas
Santa Ysabel
IUCN VPreserve
19.20 km² overlap
Open Space
18.87 km² overlap
Ramona Grasslands
IUCN VPreserve
14.13 km² overlap
Volcan Mountain
IUCN VWilderness Preserve
5.56 km² overlap
Boden Canyon
IUCN VEcological Reserve
5.09 km² overlap
Blue Sky
IUCN VEcological Reserve
2.89 km² overlap
Ramona Grasslands
IUCN VEasement
2.33 km² overlap
Organ Valley
IUCN IaResearch Natural Area
2.28 km² overlap
Del Dios Highlands
IUCN VPreserve
2.19 km² overlap
20 more protected areassorted by overlap area
La Zanja Canyon
IUCN VLocal Conservation Area
1.13 km² overlap
Hellhole Canyon
IUCN VPreserve
0.98 km² overlap
Simon
IUCN VPreserve
0.97 km² overlap
Lusardi Creek
IUCN VPreserve
0.91 km² overlap
Private Conservation
0.72 km² overlap
San Dieguito Lagoon
IUCN VEcological Reserve
0.41 km² overlap
Mesa Grande
IUCN VEasement
0.41 km² overlap
Marine Protected Area
0.29 km² overlap
San Felipe Valley
IUCN VWildlife Area
0.29 km² overlap
Mt. Gower
IUCN VPreserve
0.28 km² overlap
Open Space
0.27 km² overlap
Unknown or Unnamed
IUCN Not AssignedConservation Easement
0.26 km² overlap
Ewing Oak
IUCN VPreserve
0.18 km² overlap
Bottle Peak
IUCN VPreserve
0.18 km² overlap
Mt Woodson
IUCN VLocal Conservation Area
0.17 km² overlap
Lake Hodges
IUCN VEcological Reserve
0.10 km² overlap
Greenfield
IUCN VPreserve
0.07 km² overlap
Santa Ysabel
IUCN VEasement
0.05 km² overlap
Barnett Ranch
IUCN VPreserve
0.01 km² overlap
San Dieguito Lagoon
IUCN VPrivate Conservation
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 662 distinct species · 993 172 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 San Dieguito River : 28 espèces reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, 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°
16,0°C
Annual rain
444mm
Moisture idx (CMI)
-0,68
Runoff
114mm/an
PET
1 375mm
AET
377mm
Mean slope
8,2°
Water table
563cm
Forest
60%
Crops
7%
Urban
16%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)