HydroBASINS lev08 watershed · #7080556950
Bassin de Big Blue 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 7 administrative regions : Bartholomew, Hancock, Henry, Johnson, Randolph +2
Sub-basin area
1 527,4km²
Upstream area
1 527,5km²
Discharge
19,94m³/s
Mean elev.
283m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- Henry473.9 km²31.0% of basin
- Shelby456.8 km²29.9% of basin
- 340.0 km²22.2% of basin
- Hancock237.5 km²15.5% of basin
- Johnson17.7 km²1.2% of basin
- 2.2 km²0.1% of basin
- Randolph0.8 km²0.1% of basin
10 intersecting protected areas
Wilbur Wright
IUCN VFish And Wildlife Area
4.20 km² overlap
Natural Area
2.54 km² overlap
Driftwood
IUCN Not AssignedPublic Fishing Area
0.88 km² overlap
Zeigler
IUCN Not AssignedNature Preserve
0.53 km² overlap
City of New Castle Lot
IUCN VNatural Area
0.42 km² overlap
Hawk Woods Site Fee
IUCN VPrivate Conservation Land
0.24 km² overlap
Reserve Program
0.09 km² overlap
City of New Castle lot
IUCN VNatural Area
0.08 km² overlap
Wheeler Lot
IUCN VNature Preserve
0.07 km² overlap
1 more protected areassorted by overlap area
Steussy-Williams Conservation Agreement
IUCN Not AssignedConservation Easement
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 911 distinct species · 166 421 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 Blue River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 3 types (connectance 11.3%, filtre Serrano α=0.2). 7 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°
10,6°C
Annual rain
1 035mm
Moisture idx (CMI)
-0,03
Runoff
413mm/an
PET
1 066mm
AET
826mm
Mean slope
0,5°
Water table
36cm
Forest
3%
Crops
75%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)