Ontologia

HydroBASINS lev08 watershed · #7080604390

Bassin de Grand Gulch

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 Juan

Pfafstetter: 77260106

Sub-basin area

464,2km²

Upstream area

464,4km²

Discharge

0,24m³/s

Mean elev.

1 842m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de San Juan River81 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

374 distinct species · 1 933 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 933 obs · 11 cellules
Obs. / cellule
≥ 611
386–610
133–385
107–132
< 107

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

Ecological tissue

Sample of 54 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 Grand Gulch : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 117 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 21 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
55
Interactions affichées
117
Connectance
0.079
Patrimoniales
1
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°

10,9°C

Annual rain

263mm

Moisture idx (CMI)

-0,78

Runoff

16mm/an

PET

1 211mm

AET

226mm

Mean slope

5,7°

Water table

1 199cm

Forest

14%

Crops

1%

Urban

0%

Protected

23%

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