HydroBASINS lev08 watershed · #2080609100
Bassin de Арда
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 9 administrative regions across 3 countries : East Macedonia and Thrace, Harmanli, Ivaylovgrad, Kardzhali, Krumovgrad +4
Sub-basin area
1 185km²
Upstream area
5 623,3km²
Discharge
37,62m³/s
Mean elev.
260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Крумовица679 km²
- Bassin de Арда521 km²
9 dept-equivalent regions (GADM L2)
- 369.1 km²31.1% of basin
- IvaylovgradHaskovo · Bulgaria314.5 km²26.5% of basin
- MadzharovoHaskovo · Bulgaria266.8 km²22.5% of basin
- KrumovgradKardzhali · Bulgaria92.2 km²7.8% of basin
- StambolovoHaskovo · Bulgaria74.3 km²6.3% of basin
- 67.7 km²5.7% of basin
- 1.1 km²0.1% of basin
- 1.0 km²0.1% of basin
1 moreFull L2 list
- Merkez0.1 km² · 0.0%
25 intersecting protected areas
Rodopi - Iztochni
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
653.89 km² overlap
Yazovir Ivaylovgrad
IUCN Not ReportedSpecial Protection Area (Birds Directive)
195.67 km² overlap
Most Arda
IUCN Not ReportedSpecial Protection Area (Birds Directive)
132.85 km² overlap
PARAPOTAMIO DASOS VOREIOU EVROU KAI ARDA
IUCN Not ReportedSpecial Protection Area (Birds Directive)
127.67 km² overlap
Madzharovo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
35.50 km² overlap
Chernata skala
IUCN VIProtected Site
8.86 km² overlap
Momina skala
IUCN VIProtected Site
7.89 km² overlap
Dolno Cherkovishte
IUCN VIProtected Site
4.69 km² overlap
Wildlife Refugee
4.55 km² overlap
16 more protected areassorted by overlap area
Patronka
IUCN VIProtected Site
1.83 km² overlap
Krumovitsa
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.80 km² overlap
Dnevni grablivi ptitzi
IUCN IIINatural Monument
0.75 km² overlap
Giurgena
IUCN VIProtected Site
0.71 km² overlap
Oreshari
IUCN VIProtected Site
0.61 km² overlap
Nahodishte na trakiiski klin
IUCN VIProtected Site
0.12 km² overlap
Natural Monument
0.12 km² overlap
Dupkata
IUCN VIProtected Site
0.06 km² overlap
Byala reka
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.03 km² overlap
Gluhite kamani
IUCN IIINatural Monument
0.02 km² overlap
Kovan kaya
IUCN IIINatural Monument
0.02 km² overlap
Kush kaya
IUCN IIINatural Monument
0.01 km² overlap
Natural Monument
0.01 km² overlap
Nahodishte na bozhur
IUCN IIINatural Monument
0.01 km² overlap
6 peshteri v mestnost Mosta
IUCN IIINatural Monument
0.00 km² overlap
Nahodishte na snezhno kokiche
IUCN IIINatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 771 distinct species · 49 339 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Арда : 15 espèces reliées par 61 interactions GloBI sur 2 types (connectance 17.4%, 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°
12,4°C
Annual rain
609mm
Moisture idx (CMI)
-0,42
Runoff
187mm/an
PET
1 051mm
AET
516mm
Mean slope
6,6°
Water table
360cm
Forest
38%
Crops
21%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)