HydroBASINS lev08 watershed · #2080289120
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 : Balakhninskiy rayon, Bogorodskiy rayon, Kstovskiy rayon, Nizhniy Novgorod gorsovet, Pavlovskiy rayon +1
Sub-basin area
1 374,6km²
Upstream area
244 308,3km²
Discharge
1 327,14m³/s
Mean elev.
91m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Суворощь1999 km²
- Bassin de Ока138 km²
6 dept-equivalent regions (GADM L2)
- 700.7 km²50.7% of basin
- 233.8 km²16.9% of basin
- 184.2 km²13.3% of basin
- Bogorodskiy rayon156.9 km²11.4% of basin
- Pavlovskiy rayon82.8 km²6.0% of basin
- 22.8 km²1.7% of basin
19 intersecting protected areas
Boloto Fedyaevskoe
IUCN IIINatural Monument
59.49 km² overlap
Natural Monument
36.11 km² overlap
ZHeleznodorozhnye dachi
IUCN IIINatural Monument
11.43 km² overlap
Territoriya Krasnaya gorka
IUCN IIINatural Monument
9.01 km² overlap
Natural Monument
5.79 km² overlap
Gnilickie dachi
IUCN IIINatural Monument
3.95 km² overlap
Malinovaya gryada
IUCN IIINatural Monument
3.76 km² overlap
Smirnovskie dachi
IUCN IIINatural Monument
3.38 km² overlap
Doskinskie dachi
IUCN IIINatural Monument
2.62 km² overlap
10 more protected areassorted by overlap area
Striginskij bor
IUCN IIINatural Monument
1.90 km² overlap
Malyshevskie grivy
IUCN IIINatural Monument
1.70 km² overlap
Urochishhe Sluda
IUCN IIINatural Monument
0.91 km² overlap
Dendropark imeni I.N. Il`yushevicha
IUCN Not ReportedNatural Monument
0.47 km² overlap
Talanova roshha
IUCN IIINatural Monument
0.29 km² overlap
Natural Monument
0.13 km² overlap
Ozero Bol`nichnoe
IUCN IIINatural Monument
0.05 km² overlap
Boloto Pyrskoe s ozerom Pyrskim
IUCN IIINatural Monument
0.03 km² overlap
Ozero u p. Sortirovochnyj
IUCN IIINatural Monument
0.03 km² overlap
Ozero Vtorchermeta
IUCN IIINatural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 817 distinct species · 26 125 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 5 types (connectance 17.1%, filtre Serrano α=0.2). 12 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°
4,5°C
Annual rain
578mm
Moisture idx (CMI)
-0,08
Runoff
180mm/an
PET
630mm
AET
454mm
Mean slope
1,0°
Water table
78cm
Forest
41%
Crops
13%
Urban
25%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)