HydroBASINS lev08 watershed · #2080609950
Bassin de Върбица
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 11 administrative regions across 2 countries : Ardino, Dzhebel, East Macedonia and Thrace, Kardzhali, Kirkovo +6
Sub-basin area
1 204,2km²
Upstream area
1 204,6km²
Discharge
8,66m³/s
Mean elev.
546m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
11 dept-equivalent regions (GADM L2)
- 472.7 km²39.2% of basin
- 186.2 km²15.4% of basin
- 164.6 km²13.6% of basin
- MomchilgradKardzhali · Bulgaria135.0 km²11.2% of basin
- 89.2 km²7.4% of basin
- 75.3 km²6.2% of basin
- 53.3 km²4.4% of basin
- 13.9 km²1.2% of basin
3 moreFull L2 list
- Krumovgrad9.0 km² · 0.7%
- East Macedonia and Thrace3.6 km² · 0.3%
- Rudozem3.0 km² · 0.3%
17 intersecting protected areas
Rodopi - Iztochni
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
130.45 km² overlap
Zhenda
IUCN Not AssignedState Game Husbandries
35.39 km² overlap
Tsigansko gradishte
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.90 km² overlap
Giumurdjinski snezhnik
IUCN VIProtected Site
18.44 km² overlap
Studen kladenets
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.76 km² overlap
Protected Site
1.26 km² overlap
Sveta Nedelia
IUCN VIProtected Site
0.29 km² overlap
Kaleto
IUCN IIINatural Monument
0.23 km² overlap
KOILADA KOMPSATOU
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.08 km² overlap
8 more protected areassorted by overlap area
Protected Site
0.08 km² overlap
Protected Site
0.07 km² overlap
Chamlaka
IUCN IVManaged Reserve
0.06 km² overlap
Vekovnite borove
IUCN VIProtected Site
0.06 km² overlap
Peshtera Godumska dupka
IUCN VIProtected Site
0.04 km² overlap
Protected Site
0.01 km² overlap
Lavat
IUCN IIINatural Monument
0.00 km² overlap
Gabata
IUCN IIINatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
793 distinct species · 8 658 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Върбица : 20 espèces reliées par 65 interactions GloBI sur 3 types (connectance 14.0%, 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°
11,1°C
Annual rain
615mm
Moisture idx (CMI)
-0,36
Runoff
225mm/an
PET
966mm
AET
522mm
Mean slope
11,4°
Water table
504cm
Forest
41%
Crops
7%
Urban
3%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)