HydroBASINS lev08 watershed · #7080757450

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 6 administrative regions : Alachua, Bradford, Clay, Flagler, Putnam +1

12% lakePfafstetter: 73256030

Sub-basin area

2 338,6km²

Upstream area

21 619,3km²

Discharge

205,41m³/s

Mean elev.

22m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Saint Johns River1858 km²

▲ Receives from 2 basins

Bassin de Dunns Creek1516 km²
Bassin de Saint Johns River237 km²

6 dept-equivalent regions (GADM L2)

Putnam
Florida · United States
960.8 km²
41.1% of basin
Saint Johns
Florida · United States
762.6 km²
32.6% of basin
Clay
Florida · United States
462.3 km²
19.8% of basin
Flagler
Florida · United States
134.5 km²
5.8% of basin
Alachua
Florida · United States
10.6 km²
0.5% of basin
Bradford
Florida · United States
5.1 km²
0.2% of basin

13 intersecting protected areas

Ordway-Swisher
IUCN V
Biological Station
36.99 km² overlap
Ordway-Swisher Biologica
IUCN V
Biological Station
24.42 km² overlap
St. Johns River Blueway-Meldrim
IUCN Not Assigned
Conservation Easement
21.18 km² overlap
Mike Roess Gold Head Branch
IUCN III
State Park
9.36 km² overlap
Sundew
IUCN V
Mitigation Bank
8.33 km² overlap
Tupelo
IUCN V
Mitigation Bank
6.12 km² overlap
Star 4
IUCN V
Mitigation Bank
3.90 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Putnam, FL
IUCN V
Conservation Easement
3.22 km² overlap
Farm Service Agency Interest Of Fl
IUCN V
Conservation Easement
2.51 km² overlap

4 more protected areassorted by overlap area

Camp Blanding
IUCN V
Military Reservation
1.81 km² overlap
Nochaway
IUCN V
Mitigation Bank
1.23 km² overlap
Green Cove Springs
IUCN V
Nature Preserve
0.51 km² overlap
Putnam County Neighborhood
IUCN V
Park
0.00 km² overlap

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

Species present

5 655 distinct species · 431 742 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Saint Johns River : 29 espèces reliées par 78 interactions GloBI sur 5 types (connectance 9.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.091

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°

20,6°C

Annual rain

1 296mm

Moisture idx (CMI)

-0,11

Runoff

287mm/an

PET

1 450mm

AET

1 096mm

Mean slope

0,7°

Water table

41cm

Forest

72%

Crops

Urban

Protected

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