HydroBASINS lev08 watershed · #2080308350
Bassin de Пьяна
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, Gaginskiy rayon, Krasnooktyabr'skiy rayon
Sub-basin area
461,8km²
Upstream area
1 775,6km²
Discharge
8,29m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Пьяна808 km²
- Bassin de Чека505 km²
3 dept-equivalent regions (GADM L2)
- 304.9 km²65.7% of basin
- 106.7 km²23.0% of basin
- 52.3 km²11.3% of basin
1 intersecting protected areas
Natural Monument
4.64 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 051 distinct species · 2 733 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Пьяна : 28 espèces reliées par 82 interactions GloBI sur 5 types (connectance 11.1%, filtre Serrano α=0.2). 11 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
553mm
Moisture idx (CMI)
-0,15
Runoff
151mm/an
PET
649mm
AET
457mm
Mean slope
1,7°
Water table
148cm
Forest
6%
Crops
72%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)