HydroBASINS lev08 watershed · #2080406730
Bassin de Остер
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 9 administrative regions : Bakhmats'kyi, Bobrovyts'kyi, Borznians'kyi, Ichnians'kyi, Kozelets'kyi +4
Sub-basin area
4 115,6km²
Upstream area
4 115,9km²
Discharge
12,77m³/s
Mean elev.
123m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 1057.6 km²25.6% of basin
- 977.5 km²23.7% of basin
- 831.2 km²20.1% of basin
- 415.6 km²10.1% of basin
- 257.5 km²6.2% of basin
- 210.6 km²5.1% of basin
- 199.0 km²4.8% of basin
- 123.3 km²3.0% of basin
1 moreFull L2 list
- Nizhyns'ka58.4 km² · 1.4%
30 intersecting protected areas
Parts of Oster river valley
IUCN Not ReportedEmerald Network
375.51 km² overlap
Upper part of Udaj and Oster rivers
IUCN Not ReportedEmerald Network
141.10 km² overlap
Smolianka massif and Budianski grasslands
IUCN Not ReportedEmerald Network
59.07 km² overlap
Sosynskyi
IUCN Not ReportedEmerald Network
55.76 km² overlap
Nizhynskyi
IUCN Not ReportedRegional landscape park
37.60 km² overlap
Dorohynskyi
IUCN Not ReportedEmerald Network
25.00 km² overlap
Nyzhnie Podesennia
IUCN Not ReportedEmerald Network
17.28 km² overlap
Kobyzhchanska dacha
IUCN Not ReportedZakaznyk
16.78 km² overlap
Kobyzhchanska dacha - II
IUCN Not ReportedZakaznyk
7.89 km² overlap
21 more protected areassorted by overlap area
Boromyky
IUCN Not ReportedZakaznyk
5.75 km² overlap
Horishne
IUCN Not ReportedZakaznyk
5.61 km² overlap
Urochyshche Lysarivshchyna
IUCN Not ReportedZakaznyk
5.52 km² overlap
Urochyshche Tvani
IUCN Not ReportedZakaznyk
4.99 km² overlap
Nimtsevo
IUCN Not ReportedZakaznyk
4.77 km² overlap
Zaitsevi sosny
IUCN Not ReportedZakaznyk
4.77 km² overlap
Zalissia
IUCN Not ReportedNational nature park
4.70 km² overlap
Klepaly
IUCN Not ReportedZakaznyk
4.64 km² overlap
Urochyshche Lubianka
IUCN Not ReportedZakaznyk
4.41 km² overlap
Kozarska dacha
IUCN Not ReportedZakaznyk
3.83 km² overlap
Pasika - I
IUCN Not ReportedZakaznyk
3.64 km² overlap
Lykhachivskyi
IUCN Not ReportedZakaznyk
3.44 km² overlap
Kontorshchyna
IUCN Not ReportedZakaznyk
3.27 km² overlap
Bile
IUCN Not ReportedZakaznyk
3.04 km² overlap
Irzhavska dacha
IUCN Not ReportedZakaznyk
3.01 km² overlap
Seredovshchyna
IUCN Not ReportedZakaznyk
2.98 km² overlap
Chemerskyi
IUCN Not ReportedZakaznyk
2.60 km² overlap
Luky
IUCN Not ReportedZakaznyk
2.44 km² overlap
Koliazhynska dacha
IUCN Not ReportedZakaznyk
2.41 km² overlap
Lysa hora
IUCN Not ReportedZakaznyk
2.18 km² overlap
Mynychyn rih
IUCN Not ReportedZapovidne urochyshche
1.96 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 711 distinct species · 7 951 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 Остер : 34 espèces reliées par 93 interactions GloBI sur 5 types (connectance 9.8%, 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°
7,5°C
Annual rain
591mm
Moisture idx (CMI)
-0,22
Runoff
93mm/an
PET
762mm
AET
500mm
Mean slope
0,4°
Water table
33cm
Forest
9%
Crops
62%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)