HydroBASINS lev08 watershed · #2080314490
Bassin de Бездна
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 5 administrative regions : Alatyrskiy rayon, Batyrevskiy rayon, Drozhzhanovskiy rayon, Shemurshinskiy rayon, Surskiy rayon
Sub-basin area
1 316,7km²
Upstream area
1 316,8km²
Discharge
3,12m³/s
Mean elev.
183m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 495.3 km²37.4% of basin
- 414.9 km²31.4% of basin
- 157.8 km²11.9% of basin
- 149.9 km²11.3% of basin
- Surskiy rayonUl'yanovsk · Russia104.7 km²7.9% of basin
4 intersecting protected areas
CHavash Varmane
IUCN IINational Park
252.65 km² overlap
Surskij im.S.A.Buturlina
IUCN IVState Natural Zakaznik
20.95 km² overlap
CHistaya polyana
IUCN IIINatural Monument
2.80 km² overlap
YAblonovka
IUCN IVState Natural Zakaznik
0.20 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 372 distinct species · 9 695 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Бездна : 21 espèces reliées par 82 interactions GloBI sur 6 types (connectance 15.5%, filtre Serrano α=0.2). 12 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°
3,8°C
Annual rain
537mm
Moisture idx (CMI)
-0,19
Runoff
77mm/an
PET
667mm
AET
452mm
Mean slope
1,5°
Water table
181cm
Forest
67%
Crops
17%
Urban
0%
Protected
37%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)