HydroBASINS lev08 watershed · #7080488960
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 5 administrative regions : Cherokee, Ida, Monona, Plymouth, Woodbury
Sub-basin area
1 506,2km²
Upstream area
7 007,8km²
Discharge
38,05m³/s
Mean elev.
394m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Little Sioux River2211 km²
- Bassin de Mill Creek761 km²
5 dept-equivalent regions (GADM L2)
- CherokeeIowa · United States611.2 km²40.5% of basin
- WoodburyIowa · United States565.5 km²37.5% of basin
- IdaIowa · United States192.7 km²12.8% of basin
- MononaIowa · United States126.6 km²8.4% of basin
- PlymouthIowa · United States12.6 km²0.8% of basin
19 intersecting protected areas
Oak Ridge
IUCN VConservation Area
8.44 km² overlap
Loess Hill
IUCN VWildlife Management Area
7.80 km² overlap
Southwood
IUCN VConservation Area
2.37 km² overlap
Watershed Protection
2.37 km² overlap
Shagbark Hills
IUCN VLocal Conservation Area
1.54 km² overlap
Sylvan Runkel
IUCN VState Preserve
1.33 km² overlap
Redtail Ridge
IUCN VHabitat Area
0.94 km² overlap
Fowler
IUCN VForest Preserve
0.72 km² overlap
Reserve Program
0.59 km² overlap
10 more protected areassorted by overlap area
Curtin Timber
IUCN VLocal Conservation Area
0.35 km² overlap
Sioux Bend
IUCN VWildlife Management Area
0.27 km² overlap
Harold Clark Area
IUCN VLocal Conservation Area
0.15 km² overlap
Heinel-Johnson
IUCN VAccess Area
0.11 km² overlap
Reserve Program
0.08 km² overlap
Patterson
IUCN VWildlife Sanctuary
0.07 km² overlap
Reserve Program
0.07 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.04 km² overlap
Pawnee Recreation Area
IUCN VWildlife Management Area
0.04 km² overlap
Little Sioux
IUCN VGreenbelt
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
726 distinct species · 11 945 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 : 20 espèces reliées par 107 interactions GloBI sur 4 types (connectance 21.6%, filtre Serrano α=0.2). 12 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°
8,5°C
Annual rain
738mm
Moisture idx (CMI)
-0,28
Runoff
170mm/an
PET
1 023mm
AET
628mm
Mean slope
2,1°
Water table
176cm
Forest
3%
Crops
76%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)