HydroBASINS lev08 watershed · #7080508820
Bassin de 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 : Johnson, Louisa, Muscatine, Washington
Sub-basin area
429,3km²
Upstream area
11 412,6km²
Discharge
95,5m³/s
Mean elev.
209m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de English River1664 km²
- Bassin de Iowa River81 km²
4 dept-equivalent regions (GADM L2)
- WashingtonIowa · United States183.0 km²42.6% of basin
- LouisaIowa · United States168.2 km²39.1% of basin
- JohnsonIowa · United States76.0 km²17.7% of basin
- MuscatineIowa · United States2.8 km²0.6% of basin
9 intersecting protected areas
Cone Marsh
IUCN VWildlife Management Area
2.95 km² overlap
Reserve Program
1.47 km² overlap
Reserve Program
0.78 km² overlap
Reserve Program
0.72 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Johnson, IA
IUCN VConservation Easement
0.68 km² overlap
Watershed Protection
0.52 km² overlap
Reserve Program
0.44 km² overlap
Reserve Program
0.21 km² overlap
Reserve Program
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
621 distinct species · 74 812 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 Iowa River : 27 espèces reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, 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°
10,1°C
Annual rain
913mm
Moisture idx (CMI)
-0,13
Runoff
260mm/an
PET
1 054mm
AET
773mm
Mean slope
1,1°
Water table
72cm
Forest
5%
Crops
68%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)