HydroBASINS lev08 watershed · #3080106460
Bassin de Большая Эрча
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 3 administrative regions : Abyyskiy rayon, Allaikhovskiy rayon, Srednekolymskiy rayon
Sub-basin area
4 278,8km²
Upstream area
4 278,8km²
Discharge
31,41m³/s
Mean elev.
163m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 4103.2 km²95.2% of basin
- 141.5 km²3.3% of basin
- 65.5 km²1.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
186 distinct species · 217 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 Большая Эрча : 15 espèces reliées par 32 interactions GloBI sur 1 type (connectance 13.9%, 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°
-14,1°C
Annual rain
222mm
Moisture idx (CMI)
-0,32
Runoff
214mm/an
PET
325mm
AET
207mm
Mean slope
7,3°
Water table
113cm
Forest
17%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)