Rivière· 86 segments
Удай
Crosses 9 administrative regions : Chornukhyns'kyi, Ichnians'kyi, Lubens'kyi, Nizhyns'kyi, Pryluts'ka +4
Total length
360km
Max discharge
17,7m³/s
Max Strahler
5
Segments matched
86
River geography9 admin regions · 0 communes
9 administrative regions crossed (GADM L2)
- Pryluts'kyiChernihiv · Ukraine156.0 kmin this dpt
- Pyriatyns'kyiPoltava · Ukraine87.0 kmin this dpt
- Ichnians'kyiChernihiv · Ukraine83.4 kmin this dpt
- Chornukhyns'kyiPoltava · Ukraine55.9 kmin this dpt
- Lubens'kyiPoltava · Ukraine19.8 kmin this dpt
- Varvyns'kyiChernihiv · Ukraine18.1 kmin this dpt
- Sribnians'kyiChernihiv · Ukraine6.3 kmin this dpt
- Nizhyns'kyiChernihiv · Ukraine3.5 kmin this dpt
- Pryluts'kaChernihiv · Ukraine0.1 kmin this dpt
30 intersecting protected areas
Upper part of Udaj and Oster rivers
IUCN Not ReportedEmerald Network
Sula river valley
IUCN Not ReportedEmerald Network
Pyriatynskyi National Nature Park
IUCN Not ReportedEmerald Network
Pyriatynskyi
IUCN Not ReportedNational nature park
Ichnianskyi
IUCN Not ReportedNational nature park
Ichnianskyi National Nature Park
IUCN Not ReportedEmerald Network
Udaiskyi
IUCN Not ReportedEmerald Network
Dorohynskyi
IUCN Not ReportedEmerald Network
Dorohynskyi
IUCN Not ReportedZakaznyk
21 more protected areassorted by area
Zaizdskyi
IUCN Not ReportedZakaznyk
Bunylivske
IUCN Not ReportedZakaznyk
Leliakivskyi
IUCN Not ReportedZakaznyk
Obychivskyi
IUCN Not ReportedZakaznyk
Polivshchyna
IUCN Not ReportedZakaznyk
Udaitsivskyi
IUCN Not ReportedZakaznyk
Hustynskyi
IUCN Not ReportedZakaznyk
Monastyryshche
IUCN Not ReportedZakaznyk
Chervonoberezhzhia
IUCN Not ReportedZakaznyk
Antonivskyi
IUCN Not ReportedZakaznyk
Deimanivskyi
IUCN Not ReportedZakaznyk
Kukvyn
IUCN Not ReportedZapovidne urochyshche
Polivshchyna
IUCN Not ReportedZakaznyk
Kharkivetskyi
IUCN Not ReportedZakaznyk
Hurbynskyi
IUCN Not ReportedZakaznyk
Riashkivskyi
IUCN Not ReportedZakaznyk
Hurbyntsivskyi
IUCN Not ReportedZakaznyk
Kukvynskyi
IUCN Not ReportedZakaznyk
Pisko-Udaiskyi
IUCN Not ReportedZakaznyk
Yary-Poruby
IUCN Not ReportedZapovidne urochyshche
Zhevak
IUCN Not ReportedZakaznyk
1 page = 1 named river (aggregation of 86 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
8 distinct species · 8 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 3 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 Удай : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
360km
Max discharge
17,7m³/s
Max Strahler
5
Segments matched
86
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.