HydroBASINS lev08 watershed · #2080253910
Bassin de Обва
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 : Dobryanskiy rayon, Il'inskiy rayon, Karagayskiy rayon, Nytvenskiy rayon
Sub-basin area
1 168,6km²
Upstream area
7 839,8km²
Discharge
57,63m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Нердва1100 km²
- Bassin de Обва586 km²
4 dept-equivalent regions (GADM L2)
- 1111.0 km²94.6% of basin
- 47.2 km²4.0% of basin
- 10.0 km²0.9% of basin
- 6.6 km²0.6% of basin
2 intersecting protected areas
CHermozskoe boloto
IUCN IVProtected Natural Landscape
13.30 km² overlap
Historical and Natural Complex
0.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
746 distinct species · 1 915 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Обва : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 5 types (connectance 12.7%, filtre Serrano α=0.2). 11 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°
1,7°C
Annual rain
636mm
Moisture idx (CMI)
0,07
Runoff
250mm/an
PET
590mm
AET
446mm
Mean slope
2,2°
Water table
68cm
Forest
60%
Crops
15%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)