Ontologia

HydroBASINS lev08 watershed · #2080298730

Bassin de Волта

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 across 2 countries : Braslaw, Kraslava, Myory, Sharkawshchyna, Vyerkhnyazdvinsk

31% lakePfafstetter: 24280370

Sub-basin area

1 225,1km²

Upstream area

61 823,2km²

Discharge

436,15m³/s

Mean elev.

142m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Daugava1245 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

8 intersecting protected areas

  • Yelnia

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    56.84 km² overlap

  • Yelnya

    IUCN IV

    Nature Sanctuary or Partial Reserve

    56.84 km² overlap

  • Boloto Mokh

    IUCN IV

    Nature Sanctuary or Partial Reserve

    43.23 km² overlap

  • Augšdaugava

    IUCN V

    Protected Landscape Area

    24.97 km² overlap

  • Augšdaugava

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    24.97 km² overlap

  • Augšdaugava

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    24.97 km² overlap

  • Starinas mežs

    IUCN IV

    Nature Reserve

    1.57 km² overlap

  • Starinas mežs

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.57 km² overlap

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

Species present

1 089 distinct species · 4 563 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 563 obs · 39 cellules
Obs. / cellule
≥ 2 190
199–2 189
119–198
22–118
< 22

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

Ecological tissue

Sample of 49 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 Волта : 37 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 3 types (connectance 6.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
51
Interactions affichées
86
Connectance
0.068
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°

5,4°C

Annual rain

630mm

Moisture idx (CMI)

-0,02

Runoff

224mm/an

PET

643mm

AET

490mm

Mean slope

0,9°

Water table

79cm

Forest

25%

Crops

47%

Urban

0%

Protected

10%

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