HydroBASINS lev08 watershed · #2080599030
Bassin de р. Тополница
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 19 administrative regions : Anton, Chavdar, Chelopech, Elin Pelin, Etropole +14
Sub-basin area
1 756km²
Upstream area
1 756,2km²
Discharge
10,41m³/s
Mean elev.
807m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
19 dept-equivalent regions (GADM L2)
- 487.1 km²27.7% of basin
- 204.9 km²11.6% of basin
- 185.4 km²10.5% of basin
- 177.2 km²10.1% of basin
- PanagyurishtePazardzhik · Bulgaria173.7 km²9.9% of basin
- 150.4 km²8.6% of basin
- 80.9 km²4.6% of basin
- 79.4 km²4.5% of basin
11 moreFull L2 list
- Chavdar53.5 km² · 3.0%
- Septemvri38.8 km² · 2.2%
- Karlovo32.4 km² · 1.8%
- Chelopech30.1 km² · 1.7%
- Pazardzhik26.5 km² · 1.5%
- Gorna Malina14.9 km² · 0.8%
- Kostenets12.8 km² · 0.7%
- Elin Pelin6.9 km² · 0.4%
- Teteven2.5 km² · 0.1%
- Etropole1.5 km² · 0.1%
- Stolichna0.1 km² · 0.0%
30 intersecting protected areas
Sredna gora
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
526.68 km² overlap
Sredna gora
IUCN Not ReportedSpecial Protection Area (Birds Directive)
388.65 km² overlap
Etropole - Baylovo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
82.27 km² overlap
Aramlietz
IUCN Not AssignedState Game Husbandries
60.44 km² overlap
Tsentralen Balkan - bufer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.01 km² overlap
Tsentralen Balkan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
40.96 km² overlap
Tsentralen Balkan
IUCN Not ReportedSpecial Protection Area (Birds Directive)
40.96 km² overlap
Tsentralen Balkan
IUCN IINational Park
40.96 km² overlap
Tsentralen Balkan bufer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.27 km² overlap
21 more protected areassorted by overlap area
Popintsi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.00 km² overlap
Iskar
IUCN Not AssignedState Game Husbandries
11.85 km² overlap
Golak
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.92 km² overlap
Cherni rid
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.08 km² overlap
Eledjik
IUCN VIProtected Site
6.50 km² overlap
Ribarnitsi Zvanichevo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.75 km² overlap
Aramliets
IUCN VIProtected Site
1.42 km² overlap
Biliov rat
IUCN VIProtected Site
0.96 km² overlap
Zlatishka bukova gora
IUCN VIProtected Site
0.73 km² overlap
Yordanovi poliani
IUCN VIProtected Site
0.68 km² overlap
Vran kamak
IUCN VIProtected Site
0.61 km² overlap
Tsarichina
IUCN IaStrict Nature Reserve
0.55 km² overlap
Nevida
IUCN VIProtected Site
0.42 km² overlap
Protected Site
0.30 km² overlap
Bogdan
IUCN IVManaged Reserve
0.29 km² overlap
Haydushki kladenets
IUCN VIProtected Site
0.28 km² overlap
Donkina gora
IUCN IIINatural Monument
0.18 km² overlap
Reka Maritsa
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.11 km² overlap
Dabravata
IUCN VIProtected Site
0.11 km² overlap
Sakaradja
IUCN IIINatural Monument
0.09 km² overlap
Konskoto dere
IUCN VIProtected Site
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 218 distinct species · 30 308 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 р. Тополница : 16 espèces reliées par 49 interactions GloBI sur 3 types (connectance 19.4%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,6°C
Annual rain
632mm
Moisture idx (CMI)
-0,27
Runoff
198mm/an
PET
881mm
AET
535mm
Mean slope
10,1°
Water table
499cm
Forest
44%
Crops
12%
Urban
1%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)