HydroBASINS lev08 watershed · #7080726960
Bassin de Altamaha 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 4 administrative regions : Appling, Long, Tattnall, Wayne
Sub-basin area
313,2km²
Upstream area
34 749,2km²
Discharge
399,63m³/s
Mean elev.
40m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Altamaha River1218 km²
- Bassin de Ohoopee River348 km²
4 dept-equivalent regions (GADM L2)
- 198.6 km²63.5% of basin
- 67.0 km²21.4% of basin
- 47.1 km²15.0% of basin
- 0.3 km²0.1% of basin
5 intersecting protected areas
Big Hammock
IUCN VWildlife Management Area
24.72 km² overlap
Big Hammock
IUCN VNatural Area
3.18 km² overlap
Reserve Program
1.21 km² overlap
National Wildlife Refuge
0.40 km² overlap
Georgia-Alabama Land Trust Easement #840
IUCN Not AssignedEasement
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
521 distinct species · 2 729 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Altamaha River : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 97 interactions GloBI sur 4 types (connectance 10.7%, 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°
19,0°C
Annual rain
1 214mm
Moisture idx (CMI)
-0,18
Runoff
364mm/an
PET
1 472mm
AET
1 027mm
Mean slope
0,7°
Water table
48cm
Forest
70%
Crops
9%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)