HydroBASINS lev08 watershed · #3080023800
Bassin de Неожиданная
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 : Shmidtovskiy rayon
Sub-basin area
2 498,7km²
Upstream area
2 498,7km²
Discharge
0,23m³/s
Mean elev.
174m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 2304.3 km²91.5% of basin
1 intersecting protected areas
Natural System of Wrangel Island Reserve
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
2517.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
483 distinct species · 1 912 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Неожиданная : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 5 types (connectance 9.1%, filtre Serrano α=0.2). 9 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°
-13,6°C
Annual rain
152mm
Moisture idx (CMI)
-0,16
Runoff
140mm/an
PET
182mm
AET
140mm
Mean slope
10,4°
Water table
154cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)