HydroBASINS lev08 watershed · #2080397840
Bassin de Грезля
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 4 administrative regions across 2 countries : Narodyts'kyi, Naroulya, Ovruts'kyi, Polis'kyi
Sub-basin area
635,7km²
Upstream area
636km²
Discharge
2,43m³/s
Mean elev.
153m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 287.7 km²45.1% of basin
- 243.0 km²38.1% of basin
- 94.8 km²14.9% of basin
- 12.6 km²2.0% of basin
6 intersecting protected areas
Hrezlianskiy
IUCN Not ReportedEmerald Network
205.74 km² overlap
Biosphere Reserve
93.04 km² overlap
Chornobylskyi Biosphere Reserve
IUCN Not ReportedEmerald Network
92.98 km² overlap
Ovrutskyi
IUCN Not ReportedEmerald Network
81.75 km² overlap
Khmeli
IUCN Not ReportedZakaznyk
0.07 km² overlap
Hladkovytskyi
IUCN Not ApplicableDendrological park
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
338 distinct species · 1 496 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 Грезля : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 3 types (connectance 16.6%, filtre Serrano α=0.2). 11 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°
7,2°C
Annual rain
636mm
Moisture idx (CMI)
-0,15
Runoff
121mm/an
PET
752mm
AET
536mm
Mean slope
0,9°
Water table
113cm
Forest
69%
Crops
10%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)