HydroBASINS lev08 watershed · #2080308210
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 4 administrative regions : Ermishevskiy rayon, Kasimovskiy rayon, Melenkovskiy rayon, Vyksunskiy rayon
Sub-basin area
754,6km²
Upstream area
183 351,3km²
Discharge
1 024,71m³/s
Mean elev.
110m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Унжа1296 km²
- Bassin de Ока198 km²
4 dept-equivalent regions (GADM L2)
- Kasimovskiy rayonRyazan' · Russia302.1 km²39.9% of basin
- 180.0 km²23.7% of basin
- Melenkovskiy rayonVladimir · Russia159.7 km²21.1% of basin
- Ermishevskiy rayonRyazan' · Russia116.2 km²15.3% of basin
8 intersecting protected areas
Okskij beregovoj
IUCN IVState Natural Zakaznik
63.00 km² overlap
Natural Monument
10.15 km² overlap
Lasinskij les
IUCN IIINatural Monument
3.54 km² overlap
Zernovo
IUCN IIINatural Monument
1.66 km² overlap
Les Panika
IUCN IIINatural Monument
1.32 km² overlap
Ozero Beloe
IUCN IIINatural Monument
0.81 km² overlap
Ozero ZHitkovo
IUCN IIINatural Monument
0.37 km² overlap
Natural Monument
0.36 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 125 distinct species · 3 641 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 43 interactions GloBI sur 2 types (connectance 12.3%, filtre Serrano α=0.2). 4 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°
4,6°C
Annual rain
598mm
Moisture idx (CMI)
-0,11
Runoff
170mm/an
PET
670mm
AET
471mm
Mean slope
1,0°
Water table
77cm
Forest
71%
Crops
8%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)