HydroBASINS lev08 watershed · #2080318110
Bassin de Майна
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 6 administrative regions : Al'keevskiy rayon, Cherdaklinskiy rayon, Melekesskiy rayon, Spasskiy rayon, Staromaynskiy rayon +1
Sub-basin area
1 376,9km²
Upstream area
1 376,9km²
Discharge
6,48m³/s
Mean elev.
112m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- Staromaynskiy rayonUl'yanovsk · Russia703.4 km²50.9% of basin
- Melekesskiy rayonUl'yanovsk · Russia293.1 km²21.2% of basin
- Cherdaklinskiy rayonUl'yanovsk · Russia280.9 km²20.3% of basin
- 55.1 km²4.0% of basin
- Water bodyUl'yanovsk · Russia49.8 km²3.6% of basin
- 0.6 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
410 distinct species · 1 930 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Майна : 32 espèces reliées par 73 interactions GloBI sur 6 types (connectance 7.7%, 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°
4,2°C
Annual rain
528mm
Moisture idx (CMI)
-0,23
Runoff
148mm/an
PET
686mm
AET
445mm
Mean slope
1,0°
Water table
114cm
Forest
25%
Crops
50%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)