HydroBASINS lev08 watershed · #2080303940
Bassin de Осотня
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 4 administrative regions : Bel'skiy rayon, Dukhovshchinskiy rayon, Kholm-Zhirkovskiy rayon, Yartsevskiy rayon
Sub-basin area
362,2km²
Upstream area
362,3km²
Discharge
2,77m³/s
Mean elev.
221m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Kholm-Zhirkovskiy rayonSmolensk · Russia191.2 km²52.5% of basin
- Bel'skiy rayonTver' · Russia108.9 km²29.9% of basin
- Dukhovshchinskiy rayonSmolensk · Russia46.5 km²12.8% of basin
- Yartsevskiy rayonSmolensk · Russia17.4 km²4.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 3 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
4,4°C
Annual rain
644mm
Moisture idx (CMI)
0,01
Runoff
241mm/an
PET
638mm
AET
490mm
Mean slope
1,1°
Water table
105cm
Forest
68%
Crops
18%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)