HydroBASINS lev08 watershed · #2080324540
Bassin de Ока
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 : Dubenskiy rayon, Kozel'skiy rayon, Odoevskiy rayon, Peremyshl'skiy rayon, Suvorovskiy rayon
Sub-basin area
1 130,2km²
Upstream area
28 620,1km²
Discharge
155,85m³/s
Mean elev.
198m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ока1413 km²
- Bassin de Упа132 km²
5 dept-equivalent regions (GADM L2)
- Suvorovskiy rayonTula · Russia781.5 km²68.8% of basin
- 230.5 km²20.3% of basin
- 54.5 km²4.8% of basin
- Dubenskiy rayonTula · Russia46.1 km²4.1% of basin
- Odoevskiy rayonTula · Russia22.5 km²2.0% of basin
2 intersecting protected areas
Ugra
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
29.08 km² overlap
Natural Monument
0.60 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 569 distinct species · 10 678 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Ока : 23 espèces reliées par 63 interactions GloBI sur 5 types (connectance 15.5%, filtre Serrano α=0.2). 6 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°
4,9°C
Annual rain
636mm
Moisture idx (CMI)
-0,05
Runoff
202mm/an
PET
671mm
AET
500mm
Mean slope
1,8°
Water table
210cm
Forest
28%
Crops
39%
Urban
2%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)