HydroBASINS lev08 watershed · #7080773470
Bassin de Saint Johns 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 5 administrative regions : Brevard, Orange, Osceola, Seminole, Volusia
Sub-basin area
2 157,7km²
Upstream area
4 973,6km²
Discharge
54,81m³/s
Mean elev.
11m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bull Creek734 km²
- Bassin de Sottile Canal564 km²
5 dept-equivalent regions (GADM L2)
- 1127.6 km²52.3% of basin
- 475.6 km²22.1% of basin
- 380.9 km²17.7% of basin
- 128.7 km²6.0% of basin
- 41.7 km²1.9% of basin
13 intersecting protected areas
Reserve Program
46.44 km² overlap
St. Johns
IUCN IVNational Wildlife Refuge
26.03 km² overlap
Fox Lake
IUCN VSanctuary
12.34 km² overlap
Reserve Program
11.71 km² overlap
Colbert-Cameron
IUCN VMitigation Bank
7.93 km² overlap
Savage/Christmas Creek
IUCN VPreserve
3.60 km² overlap
Chuluota
IUCN VWilderness Area
2.52 km² overlap
Scottsmoor Flatwoods
IUCN VSanctuary
1.65 km² overlap
North Buck Lake Scrub
IUCN VSanctuary
0.70 km² overlap
4 more protected areassorted by overlap area
South Lake
IUCN VConservation Area
0.65 km² overlap
Pine Lily
IUCN VPreserve
0.22 km² overlap
Cocoa
IUCN VConservation Area
0.15 km² overlap
Indian Mound Station
IUCN VSanctuary
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 684 distinct species · 1 192 025 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Johns River : 28 espèces reliées par 60 interactions GloBI sur 3 types (connectance 7.7%, 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°
22,0°C
Annual rain
1 289mm
Moisture idx (CMI)
-0,09
Runoff
356mm/an
PET
1 418mm
AET
1 091mm
Mean slope
0,2°
Water table
10cm
Forest
36%
Crops
3%
Urban
10%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)