Fleuve· 11 segments
Big Nemaha River
Crosses 3 administrative regions : Brown, Holt, Richardson
Total length
32km
Max discharge
1 553,5m³/s
Max Strahler
8
Segments matched
11
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- RichardsonNebraska · United States43.5 kmin this dpt
- BrownKansas · United States17.5 kmin this dpt
- HoltMissouri · United States1.5 kmin this dpt
3 intersecting protected areas
Reserve Program
Watershed Protection
Margrave
IUCN VWildlife Management Area
1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
54 distinct species · 79 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Big Nemaha River : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 4 types (connectance 8.0%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
32km
Max discharge
1 553,5m³/s
Max Strahler
8
Segments matched
11
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.