HydroBASINS lev08 watershed · #2080316600
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 3 administrative regions : Kasimovskiy rayon, Shilovskiy rayon, Spasskiy rayon
Sub-basin area
462km²
Upstream area
118 439,4km²
Discharge
680,78m³/s
Mean elev.
99m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Средник762 km²
- Bassin de Ока105 km²
3 dept-equivalent regions (GADM L2)
- Spasskiy rayonRyazan' · Russia286.9 km²61.8% of basin
- Shilovskiy rayonRyazan' · Russia172.4 km²37.2% of basin
- Kasimovskiy rayonRyazan' · Russia4.7 km²1.0% of basin
5 intersecting protected areas
Ryazanskij
IUCN IVState Natural Zakaznik
140.48 km² overlap
Toninskij
IUCN IVState Natural Zakaznik
4.84 km² overlap
Ozero Pyrontovo
IUCN IIINatural Monument
0.42 km² overlap
Ozero Vanda
IUCN IIINatural Monument
0.17 km² overlap
Ozero Prigorochnoe
IUCN IIINatural Monument
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
492 distinct species · 1 851 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 5 types (connectance 14.1%, filtre Serrano α=0.2). 10 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
580mm
Moisture idx (CMI)
-0,16
Runoff
178mm/an
PET
687mm
AET
476mm
Mean slope
0,4°
Water table
30cm
Forest
22%
Crops
35%
Urban
0%
Protected
27%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)