HydroBASINS lev08 watershed · #7080501990
Bassin de Boyer 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 2 administrative regions : Harrison, Pottawattamie
Sub-basin area
327,5km²
Upstream area
2 444,4km²
Discharge
14,44m³/s
Mean elev.
354m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Boyer River655 km²
- Bassin de Boyer River121 km²
2 dept-equivalent regions (GADM L2)
- HarrisonIowa · United States327.0 km²99.7% of basin
- PottawattamieIowa · United States1.0 km²0.3% of basin
2 intersecting protected areas
Old Town
IUCN VConservation Area
1.39 km² overlap
Museum
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
302 distinct species · 4 045 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Boyer River : 28 espèces reliées par 120 interactions GloBI sur 5 types (connectance 15.4%, filtre Serrano α=0.2). 12 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
787mm
Moisture idx (CMI)
-0,25
Runoff
175mm/an
PET
1 045mm
AET
668mm
Mean slope
2,7°
Water table
217cm
Forest
1%
Crops
83%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)