HydroBASINS lev08 watershed · #2080600560
Bassin de Тунджа
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 4 administrative regions across 2 countries : Bolyarovo, Elhovo, Lalapaşa, Topolovgrad
Sub-basin area
357km²
Upstream area
6 530km²
Discharge
31,24m³/s
Mean elev.
281m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Тунджа806 km²
- Bassin de Поповска541 km²
4 dept-equivalent regions (GADM L2)
- 239.8 km²67.1% of basin
- 114.7 km²32.1% of basin
- TopolovgradHaskovo · Bulgaria2.9 km²0.8% of basin
- 0.2 km²0.1% of basin
10 intersecting protected areas
Derventski vazvishenia 1
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
252.30 km² overlap
Derventski vazvishenia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
251.40 km² overlap
Topolovgrad
IUCN Not AssignedState Game Husbandries
5.43 km² overlap
Reka Tundzha 2
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.96 km² overlap
Sakar
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.71 km² overlap
Balabana
IUCN IVManaged Reserve
0.44 km² overlap
Ptitsite
IUCN VIProtected Site
0.30 km² overlap
Protected Site
0.30 km² overlap
Protected Site
0.18 km² overlap
1 more protected areassorted by overlap area
Protected Site
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
279 distinct species · 1 168 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Тунджа : 22 espèces reliées par 90 interactions GloBI sur 4 types (connectance 16.0%, filtre Serrano α=0.2). 12 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°
12,1°C
Annual rain
628mm
Moisture idx (CMI)
-0,39
Runoff
95mm/an
PET
1 034mm
AET
532mm
Mean slope
3,6°
Water table
308cm
Forest
20%
Crops
54%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)