HydroBASINS lev08 watershed · #2080008500
Bassin de Dunărea (Brațul Sfântu Gheorghe)
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 16 administrative regions across 2 countries : C.a. Rosetti, Ceatalchioi, Chilia Veche, Crisan, Jurilovca +11
Sub-basin area
2 492,2km²
Upstream area
2 492,2km²
Discharge
0,03m³/s
Mean elev.
4m
Administrative coverage
16 dept-equivalent regions (GADM L2)
- Sfantu GheorgheTulcea · Romania601.2 km²24.1% of basin
- 383.6 km²15.4% of basin
- 343.1 km²13.7% of basin
- 327.2 km²13.1% of basin
- 258.4 km²10.3% of basin
- C.a. RosettiTulcea · Romania134.6 km²5.4% of basin
- 108.8 km²4.4% of basin
- 105.2 km²4.2% of basin
8 moreFull L2 list
- Pardina67.4 km² · 2.7%
- Nufaru62.9 km² · 2.5%
- Chilia Veche42.6 km² · 1.7%
- Kiliis'kyi15.8 km² · 0.6%
- Jurilovca5.5 km² · 0.2%
- Somova3.6 km² · 0.1%
- Ceatalchioi1.5 km² · 0.1%
- Valea Nucarilor0.1 km² · 0.0%
24 intersecting protected areas
Danube Delta
IUCN Not ReportedWetland of International Importance (Ramsar Site)
2355.51 km² overlap
Delta Dunării și Complexul Razim - Sinoie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2300.22 km² overlap
Delta Dunării
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2295.92 km² overlap
Danube Delta
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1855.28 km² overlap
Complexul Sacalin Zătoane
IUCN Not AssignedNot Assigned
189.08 km² overlap
Beștepe - Mahmudia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
35.09 km² overlap
Delta Dunării - zona marină
IUCN Not ReportedSite of Community Importance (Habitats Directive)
31.27 km² overlap
Marea Neagră
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.27 km² overlap
Grindul și Lacul Răducu
IUCN Not AssignedNot Assigned
27.12 km² overlap
15 more protected areassorted by overlap area
Pădurea Caraorman
IUCN Not AssignedNot Assigned
22.57 km² overlap
Kyliiske Mouth
IUCN IbWetland of International Importance (Ramsar Site)
17.52 km² overlap
Dunaisky
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
17.33 km² overlap
Complexul Vătafu - Lunguleț
IUCN Not AssignedNot Assigned
15.68 km² overlap
Complexul Periteașca - Leahova
IUCN Not AssignedNot Assigned
13.58 km² overlap
Danube Biosphere Reserve
IUCN Not ReportedEmerald Network
9.36 km² overlap
Dunaiskyi
IUCN Not ReportedBiosphere reserve
8.41 km² overlap
Lacul Potcoava
IUCN Not AssignedNot Assigned
7.28 km² overlap
Pădurea Letea
IUCN Not AssignedNot Assigned
6.37 km² overlap
Dealurile Beștepe
IUCN IVNature reserve
3.09 km² overlap
Lacul Nebunu
IUCN Not AssignedNot Assigned
1.36 km² overlap
Lacul Belciug
IUCN Not AssignedNot Assigned
1.12 km² overlap
Sărăturile Murighiol
IUCN Not AssignedNot Assigned
1.01 km² overlap
Arinișul Erenciuc
IUCN Not AssignedNot Assigned
0.30 km² overlap
Lacul Beibugeac
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 523 distinct species · 113 692 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 Dunărea (Brațul Sfântu Gheorghe) : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 52 interactions GloBI sur 3 types (connectance 9.3%, filtre Serrano α=0.2). 6 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°
11,4°C
Annual rain
366mm
Moisture idx (CMI)
-0,53
Runoff
30mm/an
PET
787mm
AET
323mm
Mean slope
0,3°
Water table
40cm
Forest
4%
Crops
11%
Urban
1%
Protected
94%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)