HydroBASINS lev08 watershed · #2080239330
Bassin de Онолва
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 2 administrative regions : Kochevskiy rayon, Kosinskiy rayon
Sub-basin area
610,5km²
Upstream area
610,5km²
Discharge
5,34m³/s
Mean elev.
179m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 611.6 km²99.6% of basin
- 2.3 km²0.4% of basin
3 intersecting protected areas
Maratovskij kedrovnik
IUCN IVProtected Natural Landscape
12.60 km² overlap
Kydzinskoe boloto
IUCN IVProtected Natural Landscape
5.04 km² overlap
Onolvinskij kedrovnik
IUCN IVNature Reserve
4.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
90 distinct species · 91 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 Онолва : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 48 interactions GloBI sur 3 types (connectance 13.7%, filtre Serrano α=0.2). 7 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°
1,1°C
Annual rain
652mm
Moisture idx (CMI)
0,12
Runoff
277mm/an
PET
574mm
AET
440mm
Mean slope
1,6°
Water table
31cm
Forest
79%
Crops
14%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)