HydroBASINS lev08 watershed · #7080472980
Bassin de Cedar 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 : Bremer, Butler, Chickasaw, Floyd
Sub-basin area
349,8km²
Upstream area
4 097,5km²
Discharge
40,4m³/s
Mean elev.
308m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Cedar River890 km²
- Bassin de Little Cedar River830 km²
4 dept-equivalent regions (GADM L2)
- BremerIowa · United States230.3 km²65.7% of basin
- ChickasawIowa · United States91.6 km²26.2% of basin
- ButlerIowa · United States14.4 km²4.1% of basin
- FloydIowa · United States14.2 km²4.0% of basin
9 intersecting protected areas
Reserve Program
0.64 km² overlap
Cedar Bend
IUCN VWildlife Area
0.48 km² overlap
Farm Service Agency Interest Of Ia
IUCN Not AssignedConservation Easement
0.34 km² overlap
Babcock Woods
IUCN VLocal Conservation Area
0.33 km² overlap
Cedar River
IUCN VWildlife Area
0.24 km² overlap
J.J. Lyons and Sons
IUCN VWildlife Area
0.21 km² overlap
Woods Pasture
IUCN VLocal Conservation Area
0.21 km² overlap
Watershed Protection
0.12 km² overlap
Local Conservation Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 062 distinct species · 11 631 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Cedar River : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 125 interactions GloBI sur 4 types (connectance 16.9%, filtre Serrano α=0.2). 16 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°
7,7°C
Annual rain
864mm
Moisture idx (CMI)
-0,10
Runoff
274mm/an
PET
957mm
AET
731mm
Mean slope
1,1°
Water table
70cm
Forest
4%
Crops
80%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)