HydroBASINS lev08 watershed · #2080437230
Bassin de Saar
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 4 administrative regions across 2 countries : Merzig-Wadern, Moselle, Saarlouis, Trier-Saarburg
Sub-basin area
440,4km²
Upstream area
7 350,7km²
Discharge
80,27m³/s
Mean elev.
305m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Nied1356 km²
- Bassin de Klausbach86 km²
4 dept-equivalent regions (GADM L2)
- 246.2 km²55.7% of basin
- 187.1 km²42.3% of basin
- 7.8 km²1.8% of basin
- 0.8 km²0.2% of basin
4 communes (GADM L5)Available for FRA, RWA
- Manderen0.65 km²7% commune
- Merschweiller0.06 km²1% commune
- Waldwisse0.05 km²0% commune
- Launstroff0.01 km²0% commune
30 intersecting protected areas
Landscape Protection Area
44.73 km² overlap
Serriger Bachtal und Leuk und Saar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
22.49 km² overlap
Landscape Protection Area
20.85 km² overlap
Steilhänge der Saar
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.11 km² overlap
Steilhänge der Saar
IUCN Not ReportedSite of Community Importance (Habitats Directive)
11.11 km² overlap
Nature Reserve
10.86 km² overlap
Wiltinger Wald
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.48 km² overlap
Landscape Protection Area
5.07 km² overlap
Landscape Protection Area
4.56 km² overlap
21 more protected areassorted by overlap area
Saar-Nied-Gau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.63 km² overlap
Landscape Protection Area
3.57 km² overlap
Nitteler Fels und Nitteler Wald
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.05 km² overlap
Nature Reserve
2.79 km² overlap
Leuktal, Krautfelsen u. Bärenfels bei Orscholz
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.69 km² overlap
Leuktal, Krautfelsen u. Bärenfels bei Orscholz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.69 km² overlap
Saaraue bei Schwemlingen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.04 km² overlap
Landscape Protection Area
2.04 km² overlap
Wiltinger Saarbogen
IUCN IVNature Reserve
1.72 km² overlap
Renglischberg
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.70 km² overlap
Landscape Protection Area
1.69 km² overlap
Landscape Protection Area
1.63 km² overlap
Nature Reserve
1.53 km² overlap
Saarhölzbachtal - Zunkelsbruch
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.53 km² overlap
Saarhölzbachtal - Zunkelsbruch
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.53 km² overlap
Nature Reserve
1.21 km² overlap
Landscape Protection Area
1.15 km² overlap
Landscape Protection Area
0.86 km² overlap
Wolferskopf
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.75 km² overlap
Nature Reserve
0.74 km² overlap
Östlich Merzig
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 221 distinct species · 60 009 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Saar : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 105 interactions GloBI sur 6 types (connectance 17.6%, filtre Serrano α=0.2). 14 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°
9,1°C
Annual rain
779mm
Moisture idx (CMI)
0,00
Runoff
298mm/an
PET
775mm
AET
579mm
Mean slope
7,1°
Water table
374cm
Forest
55%
Crops
14%
Urban
16%
Protected
23%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)