HydroBASINS lev08 watershed · #2080314120
Bassin de Алатырь
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, Ardatovskiy rayon, Atyashevskiy rayon, Bol'sheignatovskiy rayon, Ichalkovskiy rayon
Sub-basin area
1 237km²
Upstream area
11 170,8km²
Discharge
47,14m³/s
Mean elev.
146m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Нуя1043 km²
- Bassin de Алатырь379 km²
5 dept-equivalent regions (GADM L2)
- 664.1 km²53.4% of basin
- 315.4 km²25.4% of basin
- 119.7 km²9.6% of basin
- 87.9 km²7.1% of basin
- 55.5 km²4.5% of basin
4 intersecting protected areas
Bol`sheignatovskij
IUCN IVState Natural Zakaznik
31.20 km² overlap
Smol`nyj
IUCN IINational Park
28.53 km² overlap
Alatyrskij
IUCN IVState Natural Zakaznik
1.64 km² overlap
YAvlejskaya roshha
IUCN IIINatural Monument
0.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 120 distinct species · 9 427 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Алатырь : 27 espèces reliées par 70 interactions GloBI sur 5 types (connectance 10.5%, filtre Serrano α=0.2). 10 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°
4,0°C
Annual rain
532mm
Moisture idx (CMI)
-0,20
Runoff
119mm/an
PET
665mm
AET
448mm
Mean slope
1,6°
Water table
181cm
Forest
40%
Crops
35%
Urban
4%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)