HydroBASINS lev08 watershed · #7080470620
Bassin de Little 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 8 administrative regions : Buena Vista, Cherokee, Clay, Dickinson, Emmet +3
Sub-basin area
2 211,4km²
Upstream area
4 741,2km²
Discharge
25,51m³/s
Mean elev.
423m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Little Sioux River1431 km²
- Bassin de Ocheyedan River1100 km²
8 dept-equivalent regions (GADM L2)
- ClayIowa · United States1052.6 km²47.5% of basin
- O'BrienIowa · United States422.1 km²19.1% of basin
- Buena VistaIowa · United States250.6 km²11.3% of basin
- DickinsonIowa · United States213.0 km²9.6% of basin
- CherokeeIowa · United States118.0 km²5.3% of basin
- Palo AltoIowa · United States97.9 km²4.4% of basin
- EmmetIowa · United States39.4 km²1.8% of basin
- OsceolaIowa · United States21.7 km²1.0% of basin
30 intersecting protected areas
Dewey's Pasture Complex
IUCN VState Wildlife Management Area
9.55 km² overlap
Waterman Prairie Complex
IUCN VState Wildlife Management Area
6.95 km² overlap
Reserve Program
6.51 km² overlap
Hawk Valley
IUCN VWildlife Management Area
5.87 km² overlap
Barringer Slough
IUCN VWildlife Management Area
5.51 km² overlap
Reserve Program
4.33 km² overlap
Fen Valley
IUCN VWildlife Management Area
2.68 km² overlap
Little Sioux
IUCN VWildlife Management Area
2.68 km² overlap
Blue Wing Marsh
IUCN VWildlife Management Area
2.35 km² overlap
21 more protected areassorted by overlap area
Reserve Program
1.70 km² overlap
Glacial Hills Fee
IUCN VPrivate Conservation Land
1.37 km² overlap
Wetland
1.20 km² overlap
Elk Lake Wetland Complex
IUCN VWildlife Management Area
1.12 km² overlap
National Wildlife Refuge
1.05 km² overlap
Kindlespire Little Sioux
IUCN VAccess
1.05 km² overlap
Bertram
IUCN VReservation
0.96 km² overlap
D.U. Marsh
IUCN VWildlife Management Area
0.93 km² overlap
Waterman Creek
IUCN VWildlife Management Area
0.90 km² overlap
Dan Green Slough
IUCN VWildlife Management Area
0.87 km² overlap
Reserve Program
0.82 km² overlap
Virgin Lake
IUCN VWildlife Management Area
0.74 km² overlap
Oneota Little Sioux
IUCN VAccess
0.70 km² overlap
Burr
IUCN VWildlife Area
0.62 km² overlap
Hannibal Waterman
IUCN VWildlife Area
0.62 km² overlap
High Bridge
IUCN VWildlife Management Area
0.52 km² overlap
Conservation Easement
0.51 km² overlap
Thompson
IUCN VWildlife Management Area
0.48 km² overlap
Watershed Protection
0.46 km² overlap
Reserve Program
0.42 km² overlap
Reserve Program
0.38 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 153 distinct species · 39 283 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Little Sioux River : 24 espèces reliées par 82 interactions GloBI sur 3 types (connectance 13.8%, filtre Serrano α=0.2). 11 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
740mm
Moisture idx (CMI)
-0,24
Runoff
174mm/an
PET
980mm
AET
630mm
Mean slope
0,8°
Water table
101cm
Forest
4%
Crops
80%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)