HydroBASINS lev08 watershed · #2080315760
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 3 administrative regions : Bol'sheboldinskiy rayon, Bol'sheignatovskiy rayon, Ichalkovskiy rayon
Sub-basin area
379km²
Upstream area
8 891,6km²
Discharge
38,13m³/s
Mean elev.
150m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Язовка919 km²
- Bassin de Кондарша485 km²
3 dept-equivalent regions (GADM L2)
- 339.9 km²89.3% of basin
- 28.3 km²7.4% of basin
- 12.5 km²3.3% of basin
2 intersecting protected areas
Smol`nyj
IUCN IINational Park
220.93 km² overlap
Bol`sheignatovskij
IUCN IVState Natural Zakaznik
0.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 099 distinct species · 17 801 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 : 22 espèces reliées par 82 interactions GloBI sur 5 types (connectance 13.8%, filtre Serrano α=0.2). 13 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°
4,1°C
Annual rain
542mm
Moisture idx (CMI)
-0,18
Runoff
141mm/an
PET
663mm
AET
454mm
Mean slope
1,5°
Water table
188cm
Forest
64%
Crops
19%
Urban
0%
Protected
61%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)