HydroBASINS lev08 watershed · #7080462750
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 6 administrative regions : Lincoln, Lyon, Minnehaha, Rock, Sioux +1
Sub-basin area
1 176,8km²
Upstream area
14 455,4km²
Discharge
27,87m³/s
Mean elev.
425m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Pipestone Creek1668 km²
- Bassin de Slip Up Creek162 km²
6 dept-equivalent regions (GADM L2)
- Lincoln660.7 km²56.0% of basin
- LyonIowa · United States325.9 km²27.6% of basin
- SiouxIowa · United States80.8 km²6.9% of basin
- 73.2 km²6.2% of basin
- Turner20.3 km²1.7% of basin
- 18.2 km²1.5% of basin
28 intersecting protected areas
Big Sioux River
IUCN VWildlife Management Area
5.61 km² overlap
Newton Hills
IUCN VState Recreation Area
3.10 km² overlap
State Wildlife Management Area
2.47 km² overlap
Local Conservation Area
1.85 km² overlap
Peterson Prairie
IUCN VWildlife Area
1.30 km² overlap
Mckee
IUCN VState Wildlife Management Area
0.99 km² overlap
Fish
IUCN VState Wildlife Management Area
0.93 km² overlap
National Historic Landmark
0.88 km² overlap
Nine Mile Creek
IUCN VState Wildlife Management Area
0.87 km² overlap
19 more protected areassorted by overlap area
Blood Run
IUCN VState Recreation Area
0.76 km² overlap
Lincoln County
IUCN VWaterfowl Production Area
0.73 km² overlap
State Wildlife Management Area
0.71 km² overlap
Hidden Bridge
IUCN VWildlife Area
0.67 km² overlap
Johnson
IUCN VState Wildlife Management Area
0.63 km² overlap
Gitchie Manitou
IUCN VState Preserve
0.57 km² overlap
Fairview Area
IUCN VLocal Conservation Area
0.42 km² overlap
Blankespoon
IUCN VWildlife Area
0.32 km² overlap
Lake Alvin
IUCN VRecreation Area
0.22 km² overlap
Reserve Program
0.21 km² overlap
Rollings
IUCN VState Wildlife Management Area
0.19 km² overlap
Reserve Program
0.19 km² overlap
Klondike
IUCN VWildlife Management Area
0.12 km² overlap
Reserve Program
0.10 km² overlap
Watershed Protection
0.08 km² overlap
Reserve Program
0.06 km² overlap
Reserve Program
0.04 km² overlap
National Historic Landmark
0.03 km² overlap
Roeman-Stettrichs Area
IUCN VLocal Conservation Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 453 distinct species · 86 203 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Big Sioux River : 29 espèces reliées par 65 interactions GloBI sur 4 types (connectance 9.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
7,6°C
Annual rain
641mm
Moisture idx (CMI)
-0,36
Runoff
145mm/an
PET
1 006mm
AET
548mm
Mean slope
1,0°
Water table
127cm
Forest
2%
Crops
81%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)