HydroBASINS lev08 watershed · #7080501980
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 3 administrative regions : Crawford, Harrison, Monona
Sub-basin area
368,5km²
Upstream area
368,7km²
Discharge
1,99m³/s
Mean elev.
379m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- HarrisonIowa · United States234.4 km²63.5% of basin
- CrawfordIowa · United States76.4 km²20.7% of basin
- MononaIowa · United States58.2 km²15.8% of basin
1 intersecting protected areas
Willow Cemetery Prairie
IUCN VCemetery
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
429 distinct species · 7 066 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 19 espèces reliées par 118 interactions GloBI sur 4 types (connectance 21.0%, 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°
9,3°C
Annual rain
775mm
Moisture idx (CMI)
-0,25
Runoff
171mm/an
PET
1 037mm
AET
658mm
Mean slope
2,9°
Water table
219cm
Forest
0%
Crops
84%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)