HydroBASINS lev08 watershed · #7080506690
Bassin de Spring Creek
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 4 administrative regions : Greeley, Howard, Merrick, Nance
Sub-basin area
1 223,3km²
Upstream area
32 364,2km²
Discharge
42,01m³/s
Mean elev.
579m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de North Loup River2225 km²
- Bassin de Middle Loup River825 km²
4 dept-equivalent regions (GADM L2)
- Greeley426.6 km²34.8% of basin
- Howard337.1 km²27.5% of basin
- 326.7 km²26.7% of basin
- 134.6 km²11.0% of basin
3 intersecting protected areas
Reserve Program
0.20 km² overlap
Reserve Program
0.15 km² overlap
Leonard A. Koziol
IUCN VWildlife Management Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
470 distinct species · 3 532 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 Spring Creek : 33 espèces reliées par 120 interactions GloBI sur 5 types (connectance 12.1%, filtre Serrano α=0.2). 12 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°
9,3°C
Annual rain
647mm
Moisture idx (CMI)
-0,40
Runoff
120mm/an
PET
1 085mm
AET
552mm
Mean slope
1,4°
Water table
144cm
Forest
2%
Crops
45%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)