HydroBASINS lev08 watershed · #7080546760
Bassin de Grand 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 5 administrative regions : Caldwell, Daviess, Grundy, Harrison, Livingston
Sub-basin area
1 468,1km²
Upstream area
6 909,5km²
Discharge
50,48m³/s
Mean elev.
266m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de West Fork Big Creek997 km²
- Bassin de Grand River14 km²
5 dept-equivalent regions (GADM L2)
- Daviess1091.0 km²74.2% of basin
- Livingston207.8 km²14.1% of basin
- Harrison84.4 km²5.7% of basin
- Caldwell84.0 km²5.7% of basin
- Grundy2.3 km²0.2% of basin
12 intersecting protected areas
Poosey
IUCN VConservation Area
11.74 km² overlap
Gallatin
IUCN VConservation Area
2.76 km² overlap
National Wildlife Refuge
2.45 km² overlap
Reserve Program
1.07 km² overlap
Reserve Program
0.80 km² overlap
Watershed Protection
0.59 km² overlap
Jamesport
IUCN VConservation Land
0.57 km² overlap
Holmes Bend
IUCN VAccess
0.33 km² overlap
Farm Service Agency Interest Of Mo
IUCN Not AssignedConservation Easement
0.14 km² overlap
3 more protected areassorted by overlap area
Wabash Crossing
IUCN VAccess
0.05 km² overlap
Conservation Easement
0.04 km² overlap
Access
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
583 distinct species · 25 275 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 Grand River : 20 espèces reliées par 70 interactions GloBI sur 3 types (connectance 15.1%, filtre Serrano α=0.2). 11 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°
10,9°C
Annual rain
917mm
Moisture idx (CMI)
-0,17
Runoff
233mm/an
PET
1 111mm
AET
776mm
Mean slope
1,4°
Water table
124cm
Forest
11%
Crops
62%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)