HydroBASINS lev08 watershed · #2080312720
Bassin de Stirna
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 3 administrative regions : Molėtų, Vilniaus, Švenčionių
Sub-basin area
261,9km²
Upstream area
262km²
Discharge
1,91m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 119.4 km²45.4% of basin
- 98.0 km²37.2% of basin
- ŠvenčioniųVilniaus · Lithuania45.7 km²17.4% of basin
7 intersecting protected areas
State Park
111.54 km² overlap
Asvejos ežerynas
IUCN Not ReportedSpecial Protection Area (Birds Directive)
101.42 km² overlap
Asvejos ežerynas
IUCN Not ReportedSite of Community Importance (Habitats Directive)
101.42 km² overlap
Alkūnų ir Grybiškių miškai
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.16 km² overlap
Pravalo ežeras ir jo apyežerės
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.36 km² overlap
Nature Reserve
0.18 km² overlap
Vilkaraisčio miškas
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 385 distinct species · 3 515 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Stirna : 33 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 126 interactions GloBI sur 6 types (connectance 11.2%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
5,9°C
Annual rain
658mm
Moisture idx (CMI)
0,00
Runoff
230mm/an
PET
658mm
AET
504mm
Mean slope
1,5°
Water table
118cm
Forest
35%
Crops
34%
Urban
0%
Protected
41%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)