HydroBASINS lev08 watershed · #7080043800
Bassin de Saint Marys 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 2 administrative regions : Camden, Nassau
Sub-basin area
221,5km²
Upstream area
3 299,7km²
Discharge
31,4m³/s
Mean elev.
7m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Saint Marys River310 km²
- Bassin de Saint Marys River309 km²
2 dept-equivalent regions (GADM L2)
- 124.2 km²56.1% of basin
- 97.0 km²43.8% of basin
3 intersecting protected areas
Atlantic Coast Conservancy/Pelican Coast Conservancy Conservation Easement E201601A
IUCN Not AssignedConservation Easement
2.32 km² overlap
Marine Protected Area
0.02 km² overlap
Cumberland Island
IUCN VNational Seashore
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 109 distinct species · 124 281 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Saint Marys River : 25 espèces reliées par 78 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 13 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°
20,0°C
Annual rain
1 290mm
Moisture idx (CMI)
-0,07
Runoff
321mm/an
PET
1 392mm
AET
1 092mm
Mean slope
0,5°
Water table
23cm
Forest
76%
Crops
1%
Urban
12%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)