HydroBASINS lev08 watershed · #7080416140

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 1 administrative regions : Codington

55% lakePfafstetter: 74295295

Sub-basin area

340,4km²

Upstream area

2 567,9km²

Discharge

4,41m³/s

Mean elev.

551m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Roby Creek23 km²

▲ Receives from 2 basins

Bassin de Big Sioux River562 km²
Bassin de Big Sioux River95 km²

1 dept-equivalent regions (GADM L2)

Codington
South Dakota · United States
341.1 km²
100.0% of basin

8 intersecting protected areas

Codington County
IUCN V
Waterfowl Production Area
5.58 km² overlap
Cotton Slough
IUCN V
State Wildlife Management Area
2.46 km² overlap
Pelican
IUCN V
Lake
0.15 km² overlap
Eckman Game Production Area
IUCN V
State Wildlife Management Area
0.13 km² overlap
Sandy Shore
IUCN V
State Recreation Area
0.09 km² overlap
Mclaughlin
IUCN V
Nature Area
0.07 km² overlap
Lynwood
IUCN V
Wildlife Management Area
0.03 km² overlap
Sailboat Landing
IUCN V
State Wildlife Management Area
0.01 km² overlap

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

Species present

714 distinct species · 14 591 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 39 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Big Sioux River : 28 espèces reliées par 89 interactions GloBI sur 4 types (connectance 11.4%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.114

Patrimoniales

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°

5,8°C

Annual rain

565mm

Moisture idx (CMI)

-0,39

Runoff

73mm/an

PET

925mm

AET

485mm

Mean slope

0,7°

Water table

50cm

Forest

Crops

70%

Urban

Protected

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