HydroBASINS lev08 watershed · #2080327680
Bassin de Майдан
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 : Karsunskiy rayon, Maynskiy rayon, Veshkaymskiy rayon
Sub-basin area
447,1km²
Upstream area
447,2km²
Discharge
1,46m³/s
Mean elev.
217m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Maynskiy rayonUl'yanovsk · Russia300.9 km²67.0% of basin
- Veshkaymskiy rayonUl'yanovsk · Russia127.7 km²28.4% of basin
- Karsunskiy rayonUl'yanovsk · Russia20.4 km²4.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
221 distinct species · 344 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Майдан : 15 espèces reliées par 58 interactions GloBI sur 5 types (connectance 11.7%, filtre Serrano α=0.2). 17 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
542mm
Moisture idx (CMI)
-0,21
Runoff
103mm/an
PET
687mm
AET
456mm
Mean slope
1,4°
Water table
138cm
Forest
16%
Crops
62%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)