HydroBASINS lev08 watershed · #2080573340
Bassin de Арчар
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 13 administrative regions across 2 countries : Belogradchik, Brusartsi, Calafat, Ciupercenii Noi, Desa +8
Sub-basin area
974,4km²
Upstream area
571 666,9km²
Discharge
5 517,73m³/s
Mean elev.
209m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dunărea - Дунав1913 km²
- Bassin de Видбол754 km²
13 dept-equivalent regions (GADM L2)
- 307.6 km²31.5% of basin
- BelogradchikVidin · Bulgaria211.6 km²21.7% of basin
- 88.1 km²9.0% of basin
- 74.9 km²7.7% of basin
- 72.6 km²7.4% of basin
- 65.5 km²6.7% of basin
- 53.1 km²5.4% of basin
- 40.4 km²4.1% of basin
20 intersecting protected areas
Ciuperceni - Desa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
259.96 km² overlap
Calafat - Ciuperceni - Dunăre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
213.55 km² overlap
Zapadna Stara planina i Predbalkan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
146.91 km² overlap
Zapaden Balkan
IUCN Not ReportedSpecial Protection Area (Birds Directive)
132.88 km² overlap
Orsoya
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.44 km² overlap
Vartopski dol
IUCN Not ReportedSite of Community Importance (Habitats Directive)
10.17 km² overlap
Archar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.07 km² overlap
Ostrov Bliznatsi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.31 km² overlap
Ribarnitsi Orsoya
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.75 km² overlap
11 more protected areassorted by overlap area
Ciuperceni - Desa
IUCN IVNature reserve
2.31 km² overlap
Stara planina
IUCN VNature Park
1.52 km² overlap
Ribarnitzi Orsoya
IUCN VIProtected Site
1.47 km² overlap
STARA PLANINA
IUCN Not ReportedEmerald Network
1.15 km² overlap
Balta Lată
IUCN IVNature reserve
0.66 km² overlap
Magurata
IUCN IIINatural Monument
0.35 km² overlap
Makresh
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.27 km² overlap
Ostrovi Bliznatsite
IUCN VIProtected Site
0.11 km² overlap
Vidbol
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.05 km² overlap
Balta Neagră
IUCN IVNature reserve
0.04 km² overlap
Peshtera Bashovishki pech
IUCN IIINatural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
629 distinct species · 4 389 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 Арчар : 21 espèces reliées par 96 interactions GloBI sur 3 types (connectance 17.1%, filtre Serrano α=0.2). 13 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°
10,9°C
Annual rain
604mm
Moisture idx (CMI)
-0,36
Runoff
100mm/an
PET
952mm
AET
514mm
Mean slope
4,2°
Water table
285cm
Forest
28%
Crops
36%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)