HydroBASINS lev08 watershed · #7080509180
Bassin de North Loup 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 6 administrative regions : Custer, Garfield, Greeley, Howard, Sherman +1
Sub-basin area
2 225,1km²
Upstream area
11 298,2km²
Discharge
25,8m³/s
Mean elev.
648m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Calamus River2556 km²
- Bassin de North Loup River1053 km²
6 dept-equivalent regions (GADM L2)
- Valley1100.5 km²49.4% of basin
- Howard419.7 km²18.8% of basin
- Greeley404.3 km²18.1% of basin
- Garfield209.1 km²9.4% of basin
- Sherman78.0 km²3.5% of basin
- Custer16.7 km²0.7% of basin
6 intersecting protected areas
Reserve Program
2.25 km² overlap
Reserve Program
2.10 km² overlap
Leonard A. Koziol
IUCN VWildlife Management Area
1.22 km² overlap
Conservation Easement
0.43 km² overlap
Reserve Program
0.28 km² overlap
Reserve Program
0.25 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
905 distinct species · 12 873 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 North Loup River : 28 espèces reliées par 70 interactions GloBI sur 3 types (connectance 10.0%, 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°
9,1°C
Annual rain
618mm
Moisture idx (CMI)
-0,43
Runoff
107mm/an
PET
1 094mm
AET
528mm
Mean slope
1,8°
Water table
192cm
Forest
0%
Crops
41%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)