HydroBASINS lev08 watershed · #2080304580
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 8 administrative regions : Bol'shemurashkinskiy rayon, Buturlinskiy rayon, Gaginskiy rayon, Krasnooktyabr'skiy rayon, Perevozskiy rayon +3
Sub-basin area
2 131,8km²
Upstream area
7 109,6km²
Discharge
34,77m³/s
Mean elev.
140m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Пьяна1471 km²
- Bassin de Вадок675 km²
8 dept-equivalent regions (GADM L2)
- 838.0 km²39.1% of basin
- 589.9 km²27.5% of basin
- 547.7 km²25.6% of basin
- 57.9 km²2.7% of basin
- 50.6 km²2.4% of basin
- 26.9 km²1.3% of basin
- 25.4 km²1.2% of basin
- 5.4 km²0.3% of basin
12 intersecting protected areas
Buturlinskij
IUCN IVState Natural Zakaznik
113.02 km² overlap
Zabolochennaya pojma r. P`yany
IUCN IIINatural Monument
39.62 km² overlap
Ichalkovskij
IUCN IVState Natural Zakaznik
36.52 km² overlap
Pojma r. P`yany u sela Ignatovo
IUCN IIINatural Monument
9.68 km² overlap
Urazovskij
IUCN IVState Natural Zakaznik
8.71 km² overlap
Natural Monument
7.82 km² overlap
Dubrava okolo s. Tartalej
IUCN IIINatural Monument
6.85 km² overlap
Stepnye sklony u sela Revezen`
IUCN IIINatural Monument
3.21 km² overlap
Dendroparkovyj kompleks Sergachskogo leshoza v ovrage YAvlejka
IUCN Not ReportedNatural Monument
0.93 km² overlap
3 more protected areassorted by overlap area
Natural Monument
0.56 km² overlap
Natural Monument
0.44 km² overlap
Natural Monument
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 245 distinct species · 5 737 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 22 espèces reliées par 80 interactions GloBI sur 5 types (connectance 17.2%, filtre Serrano α=0.2). 9 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
565mm
Moisture idx (CMI)
-0,12
Runoff
156mm/an
PET
641mm
AET
456mm
Mean slope
2,2°
Water table
178cm
Forest
5%
Crops
67%
Urban
2%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)