HydroBASINS lev08 watershed · #2080415310
Bassin de Удай
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, Borznians'kyi, Ichnians'kyi, Nizhyns'kyi, Nosivs'kyi +4
Sub-basin area
2 460,8km²
Upstream area
2 460,8km²
Discharge
6,44m³/s
Mean elev.
139m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 1368.5 km²55.4% of basin
- 722.2 km²29.2% of basin
- 269.2 km²10.9% of basin
- 61.7 km²2.5% of basin
- 21.8 km²0.9% of basin
- 12.7 km²0.5% of basin
- 7.1 km²0.3% of basin
- 4.7 km²0.2% of basin
1 moreFull L2 list
- Bakhmats'kyi1.7 km² · 0.1%
30 intersecting protected areas
Upper part of Udaj and Oster rivers
IUCN Not ReportedEmerald Network
307.78 km² overlap
Ichnianskyi
IUCN Not ReportedNational nature park
96.68 km² overlap
Ichnianskyi National Nature Park
IUCN Not ReportedEmerald Network
94.34 km² overlap
Dorohynskyi
IUCN Not ReportedEmerald Network
27.26 km² overlap
Dorohynskyi
IUCN Not ReportedZakaznyk
17.86 km² overlap
Zaizdskyi
IUCN Not ReportedZakaznyk
16.57 km² overlap
Bunylivske
IUCN Not ReportedZakaznyk
13.71 km² overlap
Obychivskyi
IUCN Not ReportedZakaznyk
11.53 km² overlap
Zaplava Halky
IUCN Not ReportedEmerald Network
10.76 km² overlap
21 more protected areassorted by overlap area
Hustynskyi
IUCN Not ReportedZakaznyk
9.02 km² overlap
Dibrova - I
IUCN Not ReportedZakaznyk
6.79 km² overlap
Kuty
IUCN Not ReportedZakaznyk
6.65 km² overlap
Sofiivka-Romanivshchyna
IUCN Not ReportedZakaznyk
6.13 km² overlap
Turkenivka
IUCN Not ReportedZakaznyk
5.77 km² overlap
Urochyshche Kuty
IUCN Not ReportedZakaznyk
4.79 km² overlap
Riashkivskyi
IUCN Not ReportedZakaznyk
4.47 km² overlap
Shapranivka
IUCN Not ReportedZakaznyk
4.32 km² overlap
Volyk
IUCN Not ReportedZakaznyk
4.24 km² overlap
Konivshchynske
IUCN Not ReportedZakaznyk
4.15 km² overlap
Halahanove (urochyshche „Park Halahana”)
IUCN Not ReportedZakaznyk
3.67 km² overlap
Zhevak
IUCN Not ReportedZakaznyk
3.27 km² overlap
Zhevak Zakaznyk
IUCN Not ReportedEmerald Network
3.14 km² overlap
Urochyshche Tvani
IUCN Not ReportedZakaznyk
2.68 km² overlap
Prymiske
IUCN Not ReportedZakaznyk
2.66 km² overlap
Pyrohivskyi
IUCN Not ReportedZakaznyk
2.42 km² overlap
Zaudaivskyi
IUCN Not ReportedZakaznyk
2.40 km² overlap
Luhy
IUCN Not ReportedZakaznyk
2.36 km² overlap
Kruhliak
IUCN Not ReportedZapovidne urochyshche
2.07 km² overlap
Holubivka
IUCN Not ReportedZakaznyk
2.01 km² overlap
Dibrova-II
IUCN Not ReportedZakaznyk
1.52 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 004 distinct species · 2 712 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Удай : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 5 types (connectance 10.4%, 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
594mm
Moisture idx (CMI)
-0,23
Runoff
84mm/an
PET
771mm
AET
502mm
Mean slope
0,8°
Water table
104cm
Forest
7%
Crops
68%
Urban
1%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)