Ontologia

HydroBASINS lev08 watershed · #7080607270

Bassin de Big 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 1 administrative regions : Fresno

15% lakePfafstetter: 77442804

Sub-basin area

340,9km²

Upstream area

340,9km²

Discharge

4m³/s

Mean elev.

2 406m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Stevenson Creek260 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 691 distinct species · 36 970 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

36 970 obs · 9 cellules
Obs. / cellule
≥ 15 714
15 714–15 713
5 629–15 713
2 358–5 628
< 2 358

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

Ecological tissue

Sample of 47 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 Big Creek : 32 espèces reliées par 93 interactions GloBI sur 5 types (connectance 8.6%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
47
Interactions affichées
93
Connectance
0.086
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°

5,5°C

Annual rain

780mm

Moisture idx (CMI)

-0,12

Runoff

372mm/an

PET

893mm

AET

525mm

Mean slope

11,4°

Water table

519cm

Forest

98%

Crops

0%

Urban

0%

Protected

36%

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