HydroBASINS lev08 watershed · #7080712360
Bassin de Cottonwood 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 3 administrative regions across 2 countries : San Diego, Tecate, Tijuana
Sub-basin area
1 390,9km²
Upstream area
1 390,9km²
Discharge
3,43m³/s
Mean elev.
921m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 1117.7 km²80.4% of basin
- 158.9 km²11.4% of basin
- 113.5 km²8.2% of basin
13 intersecting protected areas
Pine Creek
IUCN IbWilderness
53.67 km² overlap
Otay Mountain
IUCN IbWilderness Area
30.79 km² overlap
Hauser
IUCN IbWilderness
29.13 km² overlap
Hauser Mountain
IUCN IbWilderness Study Area
22.08 km² overlap
Open Space
5.25 km² overlap
Conservation Easement
1.94 km² overlap
San Diego Mountain Ranch
IUCN VPrivate Conservation
1.91 km² overlap
Mason
IUCN VWildlife Refuge
1.43 km² overlap
La Posta - Cameron
IUCN VPreserve
1.37 km² overlap
4 more protected areassorted by overlap area
Hauser Mountain
IUCN VWilderness Area
0.86 km² overlap
Long Potrero
IUCN VPrivate Conservation
0.52 km² overlap
O'Neal Canyon
IUCN VPreserve
0.28 km² overlap
Conservation Fund
IUCN VPrivate Conservation
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 159 distinct species · 308 143 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Cottonwood Creek : 33 espèces reliées par 117 interactions GloBI sur 4 types (connectance 11.8%, 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°
14,5°C
Annual rain
444mm
Moisture idx (CMI)
-0,68
Runoff
76mm/an
PET
1 410mm
AET
377mm
Mean slope
9,3°
Water table
631cm
Forest
59%
Crops
6%
Urban
6%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)