HydroBASINS lev08 watershed · #2080303140
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 6 administrative regions : Arzamasskiy rayon, Buturlinskiy rayon, Gaginskiy rayon, Perevozskiy rayon, Shatkovskiy rayon +1
Sub-basin area
1 470,7km²
Upstream area
4 302,6km²
Discharge
21,11m³/s
Mean elev.
157m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ежать1056 km²
- Bassin de Пьяна462 km²
6 dept-equivalent regions (GADM L2)
- 325.3 km²22.0% of basin
- 304.5 km²20.6% of basin
- 302.3 km²20.5% of basin
- 252.8 km²17.1% of basin
- 240.3 km²16.3% of basin
- 52.3 km²3.5% of basin
8 intersecting protected areas
Ichalkovskij
IUCN IVState Natural Zakaznik
81.37 km² overlap
Ichalkovskij bor
IUCN IIINatural Monument
9.71 km² overlap
Natural Monument
1.13 km² overlap
Ozero CHembasovskoe
IUCN IIINatural Monument
0.44 km² overlap
Urochishhe Kamennoe
IUCN IIINatural Monument
0.36 km² overlap
Ozero Krasnoe
IUCN IIINatural Monument
0.36 km² overlap
Bornukovskaya peshhera
IUCN IIINatural Monument
0.05 km² overlap
Natural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 439 distinct species · 5 450 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 104 interactions GloBI sur 4 types (connectance 12.7%, 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°
3,9°C
Annual rain
569mm
Moisture idx (CMI)
-0,11
Runoff
152mm/an
PET
642mm
AET
456mm
Mean slope
1,9°
Water table
161cm
Forest
7%
Crops
70%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)