Ontologia

HydroBASINS lev08 watershed · #7080518820

Bassin de Big Blue 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 : Seward

Pfafstetter: 74292283

Sub-basin area

53,4km²

Upstream area

2 839km²

Discharge

13,48m³/s

Mean elev.

465m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Big Blue River310 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

417 distinct species · 12 880 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

12 880 obs · 2 cellules
Obs. / cellule
≥ 8 942
8 942–8 941
8 942–8 941
8 942–8 941
< 8 942

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

Ecological tissue

Sample of 37 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 Blue River : 28 espèces reliées par 75 interactions GloBI sur 3 types (connectance 11.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
75
Connectance
0.113
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°

10,4°C

Annual rain

712mm

Moisture idx (CMI)

-0,35

Runoff

162mm/an

PET

1 088mm

AET

606mm

Mean slope

0,3°

Water table

57cm

Forest

0%

Crops

88%

Urban

1%

Protected

2%

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