HydroBASINS lev08 watershed · #7080510060
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 5 administrative regions : Jasper, Jefferson, Keokuk, Mahaska, Marion
Sub-basin area
1 621,1km²
Upstream area
4 863,6km²
Discharge
38,82m³/s
Mean elev.
248m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de South Skunk River2166 km²
- Bassin de East Indian Creek1076 km²
5 dept-equivalent regions (GADM L2)
- JasperIowa · United States709.4 km²43.7% of basin
- MahaskaIowa · United States460.2 km²28.3% of basin
- KeokukIowa · United States309.5 km²19.1% of basin
- MarionIowa · United States141.8 km²8.7% of basin
- JeffersonIowa · United States2.6 km²0.2% of basin
30 intersecting protected areas
Reserve Program
5.58 km² overlap
Watershed Protection
4.23 km² overlap
Reserve Program
2.34 km² overlap
Hayesville Bend
IUCN VWildlife Management Area
2.17 km² overlap
Reserve Program
2.05 km² overlap
Watershed Protection
1.93 km² overlap
Winford
IUCN VWildlife Management Area
1.44 km² overlap
Skunk River Bottoms
IUCN VEasement
1.06 km² overlap
Local Conservation Area
0.98 km² overlap
21 more protected areassorted by overlap area
Russell
IUCN VWildlife Area
0.85 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.78 km² overlap
White Oak
IUCN VConservation Area
0.57 km² overlap
Watershed Protection
0.51 km² overlap
Carpenter
IUCN VWildlife Area
0.48 km² overlap
Reserve Program
0.47 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Mahaska, IA
IUCN VConservation Easement
0.44 km² overlap
Maskunky Marsh
IUCN VLocal Conservation Area
0.42 km² overlap
Watershed Protection
0.42 km² overlap
Reserve Program
0.41 km² overlap
Rose Hill
IUCN VAccess
0.35 km² overlap
Reserve Program
0.33 km² overlap
Reserve Program
0.26 km² overlap
Rose Hill Marsh
IUCN VLocal Conservation Area
0.25 km² overlap
Colfax
IUCN VWildlife Management Area
0.19 km² overlap
Bailey
IUCN VWildlife Area
0.19 km² overlap
Thirty Acre
IUCN VPark
0.15 km² overlap
South Skunk River
IUCN VWildlife Area
0.10 km² overlap
Foreman
IUCN VNature Preserve
0.07 km² overlap
Kish-Ke-Kosh Prairie
IUCN VState Preserve
0.06 km² overlap
Fairview
IUCN VWildlife Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
921 distinct species · 20 597 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 32 espèces reliées par 86 interactions GloBI sur 4 types (connectance 10.5%, 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°
9,5°C
Annual rain
893mm
Moisture idx (CMI)
-0,13
Runoff
259mm/an
PET
1 026mm
AET
755mm
Mean slope
1,5°
Water table
101cm
Forest
1%
Crops
74%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)