Ontologia

HydroBASINS lev08 watershed · #7080013550

Bassin de Contra Costa Canal

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 : Contra Costa, Sacramento, Solano

18% lakePfafstetter: 77441000

Sub-basin area

103,8km²

Upstream area

124 352,6km²

Discharge

1 179,15m³/s

Mean elev.

86m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ Receives from 6 basins

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 643 distinct species · 79 777 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

79 777 obs · 4 cellules
Obs. / cellule
≥ 46 643
46 643–46 642
21 090–46 642
21 090–21 089
< 21 090

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 45 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Contra Costa Canal : 35 espèces reliées par 86 interactions GloBI sur 4 types (connectance 8.3%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
86
Connectance
0.083
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

15,2°C

Annual rain

429mm

Moisture idx (CMI)

-0,66

Runoff

234mm/an

PET

1 279mm

AET

363mm

Mean slope

4,5°

Water table

224cm

Forest

20%

Crops

5%

Urban

32%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)