HydroBASINS lev08 watershed · #7080527760
Bassin de Nishnabotna 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 : Atchison, Fremont, Nemaha
Sub-basin area
569,6km²
Upstream area
7 677,3km²
Discharge
53,57m³/s
Mean elev.
311m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
3 dept-equivalent regions (GADM L2)
- FremontIowa · United States363.6 km²63.8% of basin
- Atchison190.6 km²33.4% of basin
- Nemaha16.1 km²2.8% of basin
12 intersecting protected areas
Watershed Protection
4.99 km² overlap
Reserve Program
3.57 km² overlap
Riverton
IUCN VWildlife Management Area
3.46 km² overlap
Brickyard Hill
IUCN VNatural Area
2.35 km² overlap
Draper Bottoms
IUCN VWildlife Management Area
2.09 km² overlap
Militia Hollow
IUCN VWildlife Management Area
1.70 km² overlap
Cooper Creek
IUCN VWildlife Management Area
1.05 km² overlap
Star School Hill Prairie
IUCN VConservation Area
0.73 km² overlap
O.S. Wing
IUCN VWildlife Management Area
0.56 km² overlap
3 more protected areassorted by overlap area
Star School Hill Prairie
IUCN VNatural Area
0.45 km² overlap
Reserve Program
0.44 km² overlap
Reserve Program
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 048 distinct species · 13 206 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Nishnabotna River : 34 espèces reliées par 114 interactions GloBI sur 4 types (connectance 12.1%, 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°
10,5°C
Annual rain
850mm
Moisture idx (CMI)
-0,22
Runoff
206mm/an
PET
1 095mm
AET
721mm
Mean slope
1,8°
Water table
145cm
Forest
6%
Crops
87%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)