HydroBASINS lev08 watershed · #2080300720
Bassin de Сертейка
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 : Demidovskiy rayon, Velizhskiy rayon
Sub-basin area
191,5km²
Upstream area
191,5km²
Discharge
1,56m³/s
Mean elev.
194m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Velizhskiy rayonSmolensk · Russia155.7 km²80.9% of basin
- Demidovskiy rayonSmolensk · Russia36.7 km²19.1% of basin
1 intersecting protected areas
Smolemsk Lakeland
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
33.66 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 distinct species · 10 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
4,7°C
Annual rain
641mm
Moisture idx (CMI)
-0,01
Runoff
258mm/an
PET
645mm
AET
491mm
Mean slope
1,3°
Water table
131cm
Forest
75%
Crops
6%
Urban
0%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)