Ontologia

HydroBASINS lev08 watershed · #7080435050

Bassin de Big Sioux 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 2 administrative regions : Brookings, Moody

Pfafstetter: 74295273

Sub-basin area

69,7km²

Upstream area

7 444,2km²

Discharge

20,34m³/s

Mean elev.

489m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

2 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

640 distinct species · 30 405 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

30 405 obs · 2 cellules
Obs. / cellule
≥ 27 558
27 558–27 557
27 558–27 557
27 558–27 557
< 27 558

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

Ecological tissue

Sample of 35 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 Sioux River : 24 espèces reliées par 117 interactions GloBI sur 4 types (connectance 19.7%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
117
Connectance
0.197
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°

6,3°C

Annual rain

580mm

Moisture idx (CMI)

-0,38

Runoff

139mm/an

PET

942mm

AET

498mm

Mean slope

0,4°

Water table

56cm

Forest

10%

Crops

71%

Urban

12%

Protected

0%

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