HydroBASINS lev08 watershed · #7080043500
Bassin de Savannah 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 : Allendale, Chatham, Effingham, Hampton, Jasper +1
Sub-basin area
2 401,1km²
Upstream area
27 174km²
Discharge
359,83m³/s
Mean elev.
25m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Brier Creek2181 km²
- Bassin de Savannah River496 km²
6 dept-equivalent regions (GADM L2)
- 755.0 km²31.5% of basin
- Jasper518.7 km²21.6% of basin
- 406.7 km²16.9% of basin
- 357.7 km²14.9% of basin
- 294.4 km²12.3% of basin
- 66.5 km²2.8% of basin
30 intersecting protected areas
Marine Protected Area
127.91 km² overlap
Savannah
IUCN IVNational Wildlife Refuge
124.33 km² overlap
Hamilton Ridge
IUCN VWildlife Management Area
53.73 km² overlap
Palachucola
IUCN VWildlife Management Area
25.40 km² overlap
Us-Sc-8-23
IUCN Not AssignedConservation Easement
11.52 km² overlap
Easement
10.57 km² overlap
Us-Sc-8-25
IUCN Not AssignedConservation Easement
8.33 km² overlap
Wildlife Management Area
5.33 km² overlap
Us-Sc-8-7
IUCN Not AssignedConservation Easement
3.80 km² overlap
21 more protected areassorted by overlap area
Us-Sc-8-21
IUCN Not AssignedConservation Easement
3.73 km² overlap
Savannah River
IUCN VState Natural Area
3.48 km² overlap
Us-Sc-8-17
IUCN Not AssignedConservation Easement
3.28 km² overlap
South Coast Mitigation Venture, LLC
IUCN Not AssignedMitigation
2.90 km² overlap
Us-Sc-8-28
IUCN Not AssignedConservation Easement
2.45 km² overlap
Us-Sc-8-13
IUCN Not AssignedConservation Easement
2.44 km² overlap
Us-Sc-8-16
IUCN Not AssignedConservation Easement
2.08 km² overlap
Us-Sc-8-14
IUCN Not AssignedConservation Easement
1.59 km² overlap
Us-Sc-8-26
IUCN Not AssignedConservation Easement
1.45 km² overlap
Reserve Program
1.32 km² overlap
Us-Sc-8-19
IUCN Not AssignedConservation Easement
1.22 km² overlap
Us-Sc-8-20
IUCN Not AssignedConservation Easement
1.19 km² overlap
Us-Sc-9-20
IUCN Not AssignedConservation Easement
1.18 km² overlap
North American Land Trust
IUCN Not AssignedConservation Easement
0.91 km² overlap
Farm Service Agency Interest Of Ga
IUCN Not AssignedConservation Easement
0.71 km² overlap
Atlantic Coast Conservancy/Pelican Coast Conservancy Conservation Easement E201686A
IUCN Not AssignedConservation Easement
0.62 km² overlap
Marine Protected Area
0.57 km² overlap
Us-Sc-8-22
IUCN Not AssignedConservation Easement
0.42 km² overlap
Reserve Program
0.40 km² overlap
Mulberry Plantation
IUCN VRestrictive Covenant (DOD/DOE)
0.37 km² overlap
Park
0.33 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 101 distinct species · 626 270 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 Savannah River : 25 espèces reliées par 75 interactions GloBI sur 3 types (connectance 11.3%, 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°
18,6°C
Annual rain
1 237mm
Moisture idx (CMI)
-0,12
Runoff
336mm/an
PET
1 408mm
AET
1 046mm
Mean slope
0,7°
Water table
33cm
Forest
78%
Crops
11%
Urban
5%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)