HydroBASINS lev08 watershed · #7080535650
Bassin de East Fork 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 : Gentry, Harrison, Ringgold, Union, Worth
Sub-basin area
1 114,5km²
Upstream area
1 114,6km²
Discharge
8,2m³/s
Mean elev.
326m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- RinggoldIowa · United States394.4 km²35.3% of basin
- 240.6 km²21.6% of basin
- Worth233.1 km²20.9% of basin
- Harrison210.8 km²18.9% of basin
- UnionIowa · United States37.0 km²3.3% of basin
13 intersecting protected areas
Conservation Area
14.10 km² overlap
Ringgold
IUCN VWildlife Management Area
10.11 km² overlap
Wildlife Management Area
5.39 km² overlap
Reserve Program
3.79 km² overlap
Private Conservation Land
2.61 km² overlap
Pawnee Prairie
IUCN VNatural Area
1.91 km² overlap
Don & Connie Huff
IUCN VWildlife Area
1.23 km² overlap
Conservation Easement
0.82 km² overlap
Grand River Grasslands
IUCN VEasement
0.30 km² overlap
4 more protected areassorted by overlap area
Sowards Ford
IUCN VAccess
0.24 km² overlap
National Wildlife Refuge
0.14 km² overlap
Lotts Creek
IUCN VConservation Area
0.08 km² overlap
Farm Service Agency Interest Of Mo
IUCN Not AssignedConservation Easement
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
669 distinct species · 25 953 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 East Fork Grand River : 27 espèces reliées par 85 interactions GloBI sur 4 types (connectance 12.8%, filtre Serrano α=0.2). 10 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°
10,3°C
Annual rain
889mm
Moisture idx (CMI)
-0,17
Runoff
233mm/an
PET
1 071mm
AET
753mm
Mean slope
1,8°
Water table
131cm
Forest
6%
Crops
59%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)