HydroBASINS lev08 watershed · #4080109090
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
288,8km²
Upstream area
4 173,8km²
Discharge
15,43m³/s
Mean elev.
14m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Алочка817 km²
- Bassin de Малый Дайкан382 km²
1 dept-equivalent regions (GADM L2)
- Ul'chskiy rayonKhabarovsk · Russia289.9 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)
230.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
85 distinct species · 161 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 : 17 espèces reliées par 14 interactions GloBI sur 3 types (connectance 6.7%, filtre Serrano α=0.2). 4 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°
-0,7°C
Annual rain
569mm
Moisture idx (CMI)
-0,02
Runoff
132mm/an
PET
581mm
AET
440mm
Mean slope
0,9°
Water table
21cm
Forest
17%
Crops
0%
Urban
0%
Protected
93%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)