HydroBASINS lev08 watershed · #2080545150
Bassin de Brațul Măcin
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 27 administrative regions : Bertestii De Jos, Carcaliu, Casimcea, Cerna, Chiscani +22
Sub-basin area
1 880,7km²
Upstream area
1 880,7km²
Discharge
7,45m³/s
Mean elev.
75m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
27 dept-equivalent regions (GADM L2)
- 268.3 km²14.2% of basin
- 194.6 km²10.3% of basin
- 170.4 km²9.0% of basin
- 138.5 km²7.3% of basin
- 137.2 km²7.3% of basin
- DorobantuTulcea · Romania117.5 km²6.2% of basin
- 113.6 km²6.0% of basin
- 104.5 km²5.5% of basin
19 moreFull L2 list
- Saraiu91.0 km² · 4.8%
- Greci88.6 km² · 4.7%
- Ciobanu69.7 km² · 3.7%
- Garliciu63.9 km² · 3.4%
- Peceneaga55.1 km² · 2.9%
- Macin55.1 km² · 2.9%
- Ostrov54.2 km² · 2.9%
- Turcoaia50.2 km² · 2.7%
- Harsova36.1 km² · 1.9%
- Carcaliu30.1 km² · 1.6%
- Smardan16.8 km² · 0.9%
- Gropeni16.2 km² · 0.9%
- Jijila5.0 km² · 0.3%
- Ghindaresti3.6 km² · 0.2%
- Bertestii De Jos2.1 km² · 0.1%
- Ciucurova1.4 km² · 0.1%
- Hamcearca0.5 km² · 0.0%
- Luncavita0.3 km² · 0.0%
- Vulturu0.1 km² · 0.0%
21 intersecting protected areas
Măcin - Niculițel
IUCN Not ReportedSpecial Protection Area (Birds Directive)
199.07 km² overlap
Dunărea Veche - Brațul Măcin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
189.43 km² overlap
Podișul Nord Dobrogean
IUCN Not ReportedSite of Community Importance (Habitats Directive)
149.81 km² overlap
Brațul Măcin
IUCN Not ReportedSite of Community Importance (Habitats Directive)
103.68 km² overlap
Pădurea Babadag
IUCN Not ReportedSpecial Protection Area (Birds Directive)
92.30 km² overlap
Munții Măcinului
IUCN Not ReportedSite of Community Importance (Habitats Directive)
86.08 km² overlap
Stepa Casimcea
IUCN Not ReportedSpecial Protection Area (Birds Directive)
84.55 km² overlap
National park
47.02 km² overlap
Stepa Saraiu - Horea
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.92 km² overlap
12 more protected areassorted by overlap area
Muchiile Cernei - Iaila
IUCN IVNature reserve
18.42 km² overlap
Dealul Ghiunghiurmez
IUCN IVNature reserve
14.18 km² overlap
Valea Mahomencea
IUCN IVNature reserve
10.52 km² overlap
Chervant - Priopcea
IUCN IVNature reserve
5.76 km² overlap
Lacul Traian
IUCN IVNature reserve
3.48 km² overlap
Măgurele
IUCN IVNature reserve
2.89 km² overlap
Balta Mică a Brăilei
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.72 km² overlap
Natural park
2.54 km² overlap
Balta Mică a Brăilei
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.54 km² overlap
Peceneaga
IUCN IVNature reserve
1.33 km² overlap
Valea Ostrovului
IUCN IVNature reserve
0.70 km² overlap
Locul fosilifer Bujoarele
IUCN Not AssignedNot Assigned
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 342 distinct species · 15 725 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Brațul Măcin : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 98 interactions GloBI sur 5 types (connectance 13.2%, 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°
11,0°C
Annual rain
458mm
Moisture idx (CMI)
-0,49
Runoff
106mm/an
PET
903mm
AET
395mm
Mean slope
2,1°
Water table
371cm
Forest
2%
Crops
58%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)