Ontologia

HydroBASINS lev08 watershed · #7080605860

Bassin de San Juan 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 Juan

Pfafstetter: 77260330

Sub-basin area

266,9km²

Upstream area

41 162,3km²

Discharge

70,22m³/s

Mean elev.

1 489m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de McCracken Canyon381 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Hovenweep

    IUCN III

    National Monument

    0.16 km² overlap

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

Species present

203 distinct species · 3 441 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 441 obs · 7 cellules
Obs. / cellule
≥ 1 662
1 662–1 661
60–1 661
39–59
< 39

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

Ecological tissue

Sample of 48 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 San Juan River : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 118 interactions GloBI sur 5 types (connectance 9.3%, filtre Serrano α=0.2). 19 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
51
Interactions affichées
118
Connectance
0.092
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°

12,0°C

Annual rain

237mm

Moisture idx (CMI)

-0,83

Runoff

28mm/an

PET

1 378mm

AET

202mm

Mean slope

5,3°

Water table

863cm

Forest

0%

Crops

2%

Urban

0%

Protected

0%

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