HydroBASINS lev08 watershed · #2080537900
Bassin de Olt
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 49 administrative regions : Agnita, Altina, Arpasu De Jos, Avrig, Beclean +44
Sub-basin area
2 903,5km²
Upstream area
10 953,6km²
Discharge
82,14m³/s
Mean elev.
696m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Homorodul Mare858 km²
- Bassin de Olt251 km²
49 dept-equivalent regions (GADM L2)
- Porumbacu De JosSibiu · Romania184.7 km²6.3% of basin
- 181.7 km²6.2% of basin
- 168.1 km²5.8% of basin
- 162.2 km²5.6% of basin
- 155.0 km²5.3% of basin
- 140.4 km²4.8% of basin
- 135.1 km²4.6% of basin
- 134.3 km²4.6% of basin
41 moreFull L2 list
- Parau114.8 km² · 3.9%
- Soars114.0 km² · 3.9%
- Arpasu De Jos111.6 km² · 3.8%
- Ucea De Jos104.6 km² · 3.6%
- Cincu100.7 km² · 3.5%
- Comana De Jos98.5 km² · 3.4%
- Bruiu95.8 km² · 3.3%
- Sercaia92.4 km² · 3.2%
- Lisa88.8 km² · 3.1%
- Cartisoara85.0 km² · 2.9%
- Mandra85.0 km² · 2.9%
- Chirpar79.8 km² · 2.7%
- Beclean73.8 km² · 2.5%
- Ticusu Vechi68.8 km² · 2.4%
- Hoghiz59.5 km² · 2.0%
- Racovita55.8 km² · 1.9%
- Ungra45.9 km² · 1.6%
- Fagaras36.1 km² · 1.2%
- Turnu Rosu34.2 km² · 1.2%
- Carta28.9 km² · 1.0%
- Vulcan27.8 km² · 1.0%
- Nocrich12.4 km² · 0.4%
- Rosia6.8 km² · 0.2%
- Marpod5.5 km² · 0.2%
- Talmaciu4.3 km² · 0.1%
- Zarnesti3.9 km² · 0.1%
- Nucsoara3.6 km² · 0.1%
- Jibert2.8 km² · 0.1%
- Capatanenii Pamanteni1.4 km² · 0.0%
- Cainenii Mici1.2 km² · 0.0%
- Victoria1.1 km² · 0.0%
- Dumbravita1.1 km² · 0.0%
- Agnita0.8 km² · 0.0%
- Rucar0.7 km² · 0.0%
- Salatrucu0.5 km² · 0.0%
- Selimbar0.4 km² · 0.0%
- Perisani0.3 km² · 0.0%
- Merghindeal0.2 km² · 0.0%
- Altina0.1 km² · 0.0%
- Codlea0.0 km² · 0.0%
- Maierus0.0 km² · 0.0%
30 intersecting protected areas
Podișul Hârtibaciului
IUCN Not ReportedSpecial Protection Area (Birds Directive)
739.32 km² overlap
Piemontul Făgăraș
IUCN Not ReportedSpecial Protection Area (Birds Directive)
712.20 km² overlap
Munții Făgăraș
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
635.84 km² overlap
Hârtibaciu Sud - Est
IUCN Not ReportedSite of Community Importance (Habitats Directive)
205.73 km² overlap
Hârtibaciu Sud - Vest
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
107.71 km² overlap
Nature reserve
49.14 km² overlap
Avrig - Scorei - Făgăraș
IUCN Not ReportedSpecial Protection Area (Birds Directive)
29.45 km² overlap
Perșani
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.03 km² overlap
Oltul Mijlociu - Cibin - Hârtibaciu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.31 km² overlap
21 more protected areassorted by overlap area
Valea Bâlii
IUCN IVNature reserve
5.08 km² overlap
Poienile cu narcise de la Dumbrava Vadului
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.02 km² overlap
Nature reserve
4.02 km² overlap
Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
3.38 km² overlap
Nature reserve
2.72 km² overlap
Arpașu de Sus
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.68 km² overlap
Pădurea Bogata
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.62 km² overlap
Pădurea Bogății
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.62 km² overlap
Pădurea Bogății
IUCN IVNature reserve
2.62 km² overlap
Pădurea de gorun și stejar de la Dosul Fânațului
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.05 km² overlap
Nature reserve
0.68 km² overlap
Dumbrăvița - Rotbav - Măgura Codlei
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.68 km² overlap
Nature reserve
0.62 km² overlap
Peștera Comana
IUCN IVNature reserve
0.43 km² overlap
Pădurea de gorun și stejar de pe Dealul Purcărețului
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.43 km² overlap
Coloanele de bazalt de la Piatra Cioplită
IUCN Not AssignedNot Assigned
0.32 km² overlap
Holbav
IUCN IVNature reserve
0.05 km² overlap
Lacul Tătarilor
IUCN IVNature reserve
0.04 km² overlap
Mlaca Tătarilor
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Lacul Iezer
IUCN IVNature reserve
0.01 km² overlap
Lacul Valea Rea
IUCN IIINatural monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 902 distinct species · 25 517 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Olt : 31 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 3 types (connectance 10.6%, filtre Serrano α=0.2). 9 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°
7,4°C
Annual rain
680mm
Moisture idx (CMI)
-0,18
Runoff
300mm/an
PET
838mm
AET
558mm
Mean slope
8,8°
Water table
381cm
Forest
54%
Crops
25%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)