HydroBASINS lev08 watershed · #7080535240
Bassin de Big Sandy 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 6 administrative regions : Adams, Clay, Fillmore, Jefferson, Nuckolls +1
Sub-basin area
1 635,3km²
Upstream area
1 635,4km²
Discharge
6,93m³/s
Mean elev.
505m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- Clay599.8 km²36.6% of basin
- 534.9 km²32.7% of basin
- Fillmore343.6 km²21.0% of basin
- 118.6 km²7.2% of basin
- Jefferson28.1 km²1.7% of basin
- Adams12.3 km²0.8% of basin
24 intersecting protected areas
Alexandria
IUCN VWildlife Management Area
4.70 km² overlap
Revolving Property
IUCN VPrivate Conservation
3.40 km² overlap
Waterfowl Production Area
3.25 km² overlap
Kissinger Basin
IUCN VWildlife Management Area
1.96 km² overlap
Reserve Program
1.72 km² overlap
Bluewing
IUCN VWildlife Management Area
1.28 km² overlap
Sora
IUCN VWildlife Management Area
1.23 km² overlap
Environmental System
1.04 km² overlap
Dry Sandy
IUCN VWildlife Management Area
0.78 km² overlap
15 more protected areassorted by overlap area
Redhead
IUCN VWildlife Management Area
0.69 km² overlap
Smartweed Marsh
IUCN VWildlife Management Area
0.65 km² overlap
Father Hupp
IUCN VWildlife Management Area
0.64 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Fillmore, NE
IUCN VConservation Easement
0.55 km² overlap
Bulrush
IUCN VWildlife Management Area
0.47 km² overlap
Reserve Program
0.42 km² overlap
Green Wing
IUCN VWildlife Management Area
0.32 km² overlap
Smartweed Marsh
IUCN VEasement
0.32 km² overlap
Prairie Marsh West
IUCN VWildlife Management Area
0.30 km² overlap
Reserve Program
0.25 km² overlap
Greenhead
IUCN VWildlife Management Area
0.24 km² overlap
Smartweed Marsh West
IUCN VWildlife Management Area
0.15 km² overlap
Revolving Property
IUCN VPrivate Conservation
0.15 km² overlap
Reserve Program
0.15 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Nuckolls, NE
IUCN VConservation Easement
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
603 distinct species · 22 012 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Big Sandy Creek : 29 espèces reliées par 62 interactions GloBI sur 3 types (connectance 10.4%, filtre Serrano α=0.2). 6 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
713mm
Moisture idx (CMI)
-0,37
Runoff
134mm/an
PET
1 123mm
AET
607mm
Mean slope
0,3°
Water table
53cm
Forest
6%
Crops
84%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)