Ontologia

HydroBASINS lev08 watershed · #7080701270

Bassin de Lower Three Runs

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 : Allendale, Barnwell

23% lakePfafstetter: 73252032

Sub-basin area

444km²

Upstream area

444,4km²

Discharge

5,74m³/s

Mean elev.

72m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Savannah River496 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Gants Mill

    IUCN Not Assigned

    Conservation Easement

    1.40 km² overlap

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

Species present

1 040 distinct species · 9 105 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 105 obs · 15 cellules
Obs. / cellule
≥ 2 896
1 803–2 895
433–1 802
286–432
< 286

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 41 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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Lower Three Runs : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 79 interactions GloBI sur 4 types (connectance 9.2%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
79
Connectance
0.092
Patrimoniales
1
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°

17,6°C

Annual rain

1 200mm

Moisture idx (CMI)

-0,16

Runoff

424mm/an

PET

1 437mm

AET

1 014mm

Mean slope

1,3°

Water table

81cm

Forest

57%

Crops

9%

Urban

0%

Protected

0%

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