HydroBASINS lev08 watershed · #2080322620
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 6 administrative regions : Pronskiy rayon, Ryazan', Ryazanskiy rayon, Spasskiy rayon, Starozhilovskiy rayon +1
Sub-basin area
2 330km²
Upstream area
99 376,2km²
Discharge
588,98m³/s
Mean elev.
133m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Вожа1595 km²
- Bassin de Ока15 km²
6 dept-equivalent regions (GADM L2)
- Ryazanskiy rayonRyazan' · Russia1448.8 km²61.9% of basin
- Spasskiy rayonRyazan' · Russia320.2 km²13.7% of basin
- Zakharovskiy rayonRyazan' · Russia309.7 km²13.2% of basin
- 156.7 km²6.7% of basin
- Starozhilovskiy rayonRyazan' · Russia78.6 km²3.4% of basin
- Pronskiy rayonRyazan' · Russia26.2 km²1.1% of basin
7 intersecting protected areas
Boriskovskij
IUCN IVState Natural Zakaznik
37.74 km² overlap
Ozera Laskovskoe, Segdenskoe, CHernen`koe, Urzhinskoe s prilegayushhej zabolochennoj territoriej
IUCN IIINatural Monument
29.49 km² overlap
Krasnoe boloto
IUCN IVState Natural Zakaznik
26.05 km² overlap
Boloto Koshel`nica
IUCN IVState Natural Zakaznik
9.06 km² overlap
Ozero Butoshnoe
IUCN IIINatural Monument
0.73 km² overlap
Natural Monument
0.33 km² overlap
Natural Monument
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 756 distinct species · 53 643 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 92 interactions GloBI sur 5 types (connectance 15.5%, filtre Serrano α=0.2). 9 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°
4,8°C
Annual rain
573mm
Moisture idx (CMI)
-0,17
Runoff
176mm/an
PET
689mm
AET
479mm
Mean slope
1,1°
Water table
111cm
Forest
15%
Crops
55%
Urban
8%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)