HydroBASINS lev08 watershed · #4080110320
Bassin de Алочка
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 1 administrative regions : Ul'chskiy rayon
Sub-basin area
816,8km²
Upstream area
816,8km²
Discharge
3,04m³/s
Mean elev.
117m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 dept-equivalent regions (GADM L2)
- Ul'chskiy rayonKhabarovsk · Russia820.0 km²100.0% of basin
1 intersecting protected areas
Lake Udyl & the mouths of the Bichi, Bitki & Pilda Rivers
IUCN Not ReportedWetland of International Importance (Ramsar Site)
47.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
323 distinct species · 378 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 9 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 Алочка : 6 espèces reliées par 10 interactions GloBI sur 3 types (connectance 18.2%, filtre Serrano α=0.2). 5 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°
-1,3°C
Annual rain
575mm
Moisture idx (CMI)
-0,01
Runoff
118mm/an
PET
578mm
AET
445mm
Mean slope
3,2°
Water table
58cm
Forest
26%
Crops
0%
Urban
0%
Protected
15%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)