HydroBASINS lev08 watershed · #2080295850
Bassin de Гжать
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 : Gagarinskiy rayon, Novoduginskiy rayon, Sychevskiy rayon, Zubtsovskiy rayon
Sub-basin area
585,3km²
Upstream area
2 403,4km²
Discharge
16,48m³/s
Mean elev.
194m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Яуза702 km²
- Bassin de Гжать244 km²
4 dept-equivalent regions (GADM L2)
- Gagarinskiy rayonSmolensk · Russia246.2 km²41.9% of basin
- Sychevskiy rayonSmolensk · Russia199.6 km²33.9% of basin
- Zubtsovskiy rayonTver' · Russia121.1 km²20.6% of basin
- Novoduginskiy rayonSmolensk · Russia21.3 km²3.6% of basin
3 intersecting protected areas
Gagarinskij
IUCN IINatural Park
254.21 km² overlap
State Natural Zakaznik
60.74 km² overlap
Boloto Semichastnyj Moh
IUCN IVState Natural Zakaznik
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
206 distinct species · 623 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Гжать : 26 espèces reliées par 92 interactions GloBI sur 5 types (connectance 16.4%, filtre Serrano α=0.2). 8 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°
4,3°C
Annual rain
632mm
Moisture idx (CMI)
-0,01
Runoff
223mm/an
PET
638mm
AET
489mm
Mean slope
0,8°
Water table
54cm
Forest
54%
Crops
26%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)