HydroBASINS lev08 watershed · #2080283110
Bassin de Вала
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 : Alnashskiy rayon, Grakhovskiy rayon, Kiznerskiy rayon, Malopurginskiy rayon, Mozhga +3
Sub-basin area
1 638km²
Upstream area
1 638km²
Discharge
10,5m³/s
Mean elev.
180m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
8 dept-equivalent regions (GADM L2)
- 1188.4 km²72.2% of basin
- 283.8 km²17.2% of basin
- 98.0 km²6.0% of basin
- 37.6 km²2.3% of basin
- 25.0 km²1.5% of basin
- 6.2 km²0.4% of basin
- 5.4 km²0.3% of basin
- 1.6 km²0.1% of basin
6 intersecting protected areas
Kazanskij
IUCN IVState Natural Zakaznik
57.09 km² overlap
Istok r. Valy
IUCN IIINatural Monument
1.00 km² overlap
Natural Monument
0.39 km² overlap
Natural Monument
0.38 km² overlap
Istok reki Tojma
IUCN IIINatural Monument
0.20 km² overlap
Dubovaya roshha (Dubovye roshhi)
IUCN IIINatural Monument
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
304 distinct species · 847 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 Вала : 16 espèces reliées par 62 interactions GloBI sur 4 types (connectance 19.1%, filtre Serrano α=0.2). 10 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°
2,7°C
Annual rain
576mm
Moisture idx (CMI)
-0,11
Runoff
211mm/an
PET
644mm
AET
453mm
Mean slope
1,8°
Water table
116cm
Forest
54%
Crops
41%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)