Rivière· 45 segments
Огоста
Crosses 11 administrative regions : Berkovitsa, Boichinovtsi, Chiprovtsi, Georgy Damyanovo, Hairedin +6
Total length
118km
Max discharge
19,4m³/s
Max Strahler
5
Segments matched
45
River geography11 admin regions · 0 communes
11 administrative regions crossed (GADM L2)
- BoichinovtsiMontana · Bulgaria71.0 kmin this dpt
- MiziyaVratsa · Bulgaria30.1 kmin this dpt
- HairedinVratsa · Bulgaria26.6 kmin this dpt
- ChiprovtsiMontana · Bulgaria23.9 kmin this dpt
- Georgy DamyanovoMontana · Bulgaria17.4 kmin this dpt
- MontanaMontana · Bulgaria17.4 kmin this dpt
- ValchedramMontana · Bulgaria13.4 kmin this dpt
- KozloduyVratsa · Bulgaria6.4 kmin this dpt
- KrivodolVratsa · Bulgaria3.6 kmin this dpt
- BerkovitsaMontana · Bulgaria0.2 kmin this dpt
- OryahovoVratsa · Bulgaria0.0 kmin this dpt
11 intersecting protected areas
Zapadna Stara planina i Predbalkan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Zapaden Balkan
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Zlatiyata
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Pastrina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Reka Ogosta
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Ostrovi Kozloduy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Portitovtsi - Vladimirovo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Reka Skat
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Ravnensko gradishte
IUCN VIProtected Site
2 more protected areassorted by area
Porechie na reka Botunia
IUCN VIProtected Site
Daneva mogila
IUCN VIProtected Site
1 page = 1 named river (aggregation of 45 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
59 distinct species · 76 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Огоста : 27 espèces reliées par 60 interactions GloBI sur 3 types (connectance 10.7%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
118km
Max discharge
19,4m³/s
Max Strahler
5
Segments matched
45
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.