Ontologia

HydroBASINS lev08 watershed · #7080594080

Bassin de South Anna 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 : Albemarle, Fluvanna, Goochland, Hanover, Louisa +1

2% lakePfafstetter: 73190405

Sub-basin area

1 042,2km²

Upstream area

1 042,3km²

Discharge

14,21m³/s

Mean elev.

113m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de South Anna River67 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

6 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Alb-Vof-4048

    IUCN Not Assigned

    Conservation Easement

    3.30 km² overlap

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

Species present

2 338 distinct species · 136 226 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

136 226 obs · 30 cellules
Obs. / cellule
≥ 29 055
26 167–29 054
3 538–26 166
1 072–3 537
< 1 072

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

Ecological tissue

Sample of 31 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 South Anna River : 20 espèces reliées par 69 interactions GloBI sur 3 types (connectance 13.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
69
Connectance
0.139
Patrimoniales
0
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°

13,3°C

Annual rain

1 085mm

Moisture idx (CMI)

-0,09

Runoff

427mm/an

PET

1 196mm

AET

880mm

Mean slope

1,7°

Water table

106cm

Forest

96%

Crops

17%

Urban

0%

Protected

0%

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