HydroBASINS lev08 watershed · #2080262160
Bassin de Полометь
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 2 administrative regions : Krestetskiy rayon, Valdayskiy rayon
Sub-basin area
809km²
Upstream area
809km²
Discharge
7,99m³/s
Mean elev.
191m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 744.9 km²91.6% of basin
- 68.3 km²8.4% of basin
1 intersecting protected areas
Valdaiskiy
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
551.23 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
574 distinct species · 1 439 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Полометь : 24 espèces reliées par 58 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 7 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°
3,5°C
Annual rain
691mm
Moisture idx (CMI)
0,10
Runoff
305mm/an
PET
619mm
AET
479mm
Mean slope
1,6°
Water table
117cm
Forest
95%
Crops
3%
Urban
0%
Protected
68%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)