Ontologia

HydroBASINS lev08 watershed · #1080977040

Bassin de Volta

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 7 administrative regions : Akwapem North, Asuogyaman, Lower Manya-Krobo, North Tongu, Okere +2

82% lakePfafstetter: 14410309

Sub-basin area

1 112km²

Upstream area

405 286,6km²

Discharge

1 190,43m³/s

Mean elev.

115m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Volta157 km²

▲ Receives from 2 basins

7 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Volta River

    IUCN IV

    Forest Reserve

    40.38 km² overlap

  • Aboben Hill

    IUCN VI

    Forest Reserve

    6.08 km² overlap

  • Sapawsu

    IUCN VI

    Forest Reserve

    4.39 km² overlap

  • Yongwa

    IUCN III

    Forest Reserve

    0.93 km² overlap

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

Species present

1 185 distinct species · 9 379 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 379 obs · 42 cellules
Obs. / cellule
≥ 2 085
782–2 084
169–781
51–168
< 51

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

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Volta : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 4 types (connectance 5.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
39
Connectance
0.056
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°

26,6°C

Annual rain

1 179mm

Moisture idx (CMI)

-0,31

Runoff

163mm/an

PET

1 706mm

AET

999mm

Mean slope

4,4°

Water table

253cm

Forest

23%

Crops

37%

Urban

10%

Protected

4%

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