HydroBASINS lev08 watershed · #7080498080
Bassin de South Skunk 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 7 administrative regions : Boone, Hamilton, Hardin, Jasper, Polk +2
Sub-basin area
2 166,1km²
Upstream area
2 166,1km²
Discharge
16,09m³/s
Mean elev.
312m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- HamiltonIowa · United States762.2 km²35.1% of basin
- StoryIowa · United States622.0 km²28.7% of basin
- BooneIowa · United States339.8 km²15.7% of basin
- PolkIowa · United States282.4 km²13.0% of basin
- JasperIowa · United States156.9 km²7.2% of basin
- WebsterIowa · United States3.8 km²0.2% of basin
- HardinIowa · United States2.4 km²0.1% of basin
30 intersecting protected areas
Chichaqua Bottoms
IUCN VWildlife Management Area
14.82 km² overlap
Reserve Program
8.73 km² overlap
Reserve Program
6.24 km² overlap
Colfax
IUCN VWildlife Management Area
4.65 km² overlap
Reserve Program
3.46 km² overlap
Reserve Program
2.75 km² overlap
Reserve Program
2.35 km² overlap
Watershed Protection
2.02 km² overlap
Reserve Program
1.03 km² overlap
21 more protected areassorted by overlap area
Greenbelt
0.97 km² overlap
Skunk River
IUCN VGreenbelt
0.85 km² overlap
Paul Errington Marsh
IUCN VWildlife Management Area
0.79 km² overlap
Hoffman
IUCN VWildlife Area
0.62 km² overlap
Little Wall Lake
IUCN VWildlife Management Area
0.58 km² overlap
Reserve Program
0.55 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Hamilton, IA
IUCN Not AssignedConservation Easement
0.52 km² overlap
Conservation Easement
0.52 km² overlap
Skunk River Flats
IUCN VWildlife Management Area
0.47 km² overlap
Bob Pyle Marsh
IUCN VWildlife Management Area
0.45 km² overlap
Polk County
IUCN VIWaterfowl Production Area
0.43 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.41 km² overlap
Greenbelt
0.37 km² overlap
Reserve Program
0.31 km² overlap
Richard's Marsh
IUCN VLocal Conservation Area
0.30 km² overlap
Local Conservation Area
0.25 km² overlap
Watershed Protection
0.24 km² overlap
Reactor Woods
IUCN VState Conservation Area
0.21 km² overlap
Christiansen
IUCN VForest Preserve
0.20 km² overlap
Munn Woods
IUCN VLocal Conservation Area
0.18 km² overlap
Masterson
IUCN VWildlife Area
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 034 distinct species · 506 540 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 South Skunk River : 27 espèces reliées par 81 interactions GloBI sur 3 types (connectance 12.9%, filtre Serrano α=0.2). 9 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°
8,7°C
Annual rain
842mm
Moisture idx (CMI)
-0,16
Runoff
232mm/an
PET
1 007mm
AET
714mm
Mean slope
0,6°
Water table
71cm
Forest
1%
Crops
84%
Urban
2%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)