HydroBASINS lev08 watershed · #7080706590

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 3 administrative regions : Allendale, Burke, Screven

Pfafstetter: 73252031

Sub-basin area

495,5km²

Upstream area

22 591,4km²

Discharge

317,25m³/s

Mean elev.

43m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Savannah River2401 km²

▲ Receives from 2 basins

Bassin de Savannah River612 km²
Bassin de Lower Three Runs444 km²

3 dept-equivalent regions (GADM L2)

Allendale
South Carolina · United States
280.1 km²
56.6% of basin
Screven
Georgia · United States
212.1 km²
42.8% of basin
Burke
Georgia · United States
3.0 km²
0.6% of basin

8 intersecting protected areas

Tuckahoe
IUCN V
Wildlife Management Area
47.02 km² overlap
Wetlands Reserve Program (WRP), Allendale, SC
IUCN V
Reserve Program
3.26 km² overlap
Wetlands Reserve Program (WRP), Allendale, SC
IUCN V
Reserve Program
2.82 km² overlap
Dixon Bay
IUCN V
Wildlife Management Area
1.33 km² overlap
Wetlands Reserve Program (WRP), Orangeburg, SC
IUCN V
Reserve Program
0.22 km² overlap
Tuckahoe
IUCN V
Wildlife Management Area
0.11 km² overlap
Savannah National Wildlife Refuge
IUCN IV
Marine Protected Area
0.09 km² overlap
Savannah
IUCN IV
National Wildlife Refuge
0.09 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

801 distinct species · 7 645 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 38 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Savannah River : 26 espèces reliées par 80 interactions GloBI sur 4 types (connectance 10.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.108

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

18,0°C

Annual rain

1 200mm

Moisture idx (CMI)

-0,17

Runoff

396mm/an

PET

1 446mm

AET

1 014mm

Mean slope

0,7°

Water table

48cm

Forest

79%

Crops

15%

Urban

Protected

10%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)