HydroBASINS lev08 watershed · #2080315220
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 : Egor'evskiy rayon, Kolomenskiy rayon, Lukhovitskiy rayon, Ryazanskiy rayon, Rybnovskiy rayon +1
Sub-basin area
1 206,9km²
Upstream area
94 405km²
Discharge
568,07m³/s
Mean elev.
119m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Цна1240 km²
- Bassin de Ока340 km²
6 dept-equivalent regions (GADM L2)
- 689.0 km²56.8% of basin
- Rybnovskiy rayonRyazan' · Russia291.1 km²24.0% of basin
- 185.4 km²15.3% of basin
- 31.5 km²2.6% of basin
- Ryazanskiy rayonRyazan' · Russia13.1 km²1.1% of basin
- 2.2 km²0.2% of basin
8 intersecting protected areas
State Natural Zakaznik
19.54 km² overlap
Urochishhe Verevkin bugor
IUCN IVState Natural Zakaznik
9.53 km² overlap
State Natural Zakaznik
3.10 km² overlap
Vakinskij les
IUCN IIINatural Monument
1.26 km² overlap
Natural Monument
1.04 km² overlap
Ozero Sitnoe s vodyanym orehom
IUCN IIINatural Monument
0.86 km² overlap
Fedyakinskij les
IUCN IIINatural Monument
0.67 km² overlap
Poshhupovo
IUCN IIINatural Monument
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 111 distinct species · 33 869 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 68 interactions GloBI sur 3 types (connectance 15.6%, 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°
4,9°C
Annual rain
587mm
Moisture idx (CMI)
-0,13
Runoff
174mm/an
PET
676mm
AET
481mm
Mean slope
0,8°
Water table
67cm
Forest
43%
Crops
31%
Urban
1%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)