HydroBASINS lev08 watershed · #7080483260
Bassin de South Fork Iowa 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 4 administrative regions : Franklin, Hamilton, Hardin, Wright
Sub-basin area
820,6km²
Upstream area
820,6km²
Discharge
6,6m³/s
Mean elev.
345m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- HardinIowa · United States594.9 km²72.4% of basin
- HamiltonIowa · United States197.0 km²24.0% of basin
- WrightIowa · United States21.4 km²2.6% of basin
- FranklinIowa · United States8.5 km²1.0% of basin
6 intersecting protected areas
Reserve Program
1.79 km² overlap
Boddy-Hunt
IUCN VWildlife Area
0.20 km² overlap
Hansen
IUCN VWetland
0.06 km² overlap
Zeisman
IUCN VWildlife Area
0.04 km² overlap
Gehrke
IUCN VWildlife Area
0.02 km² overlap
Twin Elms
IUCN VLocal Conservation Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
591 distinct species · 4 342 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Fork Iowa River : 26 espèces reliées par 127 interactions GloBI sur 4 types (connectance 15.5%, filtre Serrano α=0.2). 15 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°
8,0°C
Annual rain
845mm
Moisture idx (CMI)
-0,14
Runoff
252mm/an
PET
985mm
AET
716mm
Mean slope
0,6°
Water table
57cm
Forest
0%
Crops
81%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)