HydroBASINS lev08 watershed · #2080023600
Bassin de Ems
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 : Aurich, Emden, Leer, Wittmund
Sub-basin area
555,6km²
Upstream area
12 103,2km²
Discharge
175,29m³/s
Mean elev.
2m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Soeste2212 km²
- Bassin de Ems1135 km²
4 dept-equivalent regions (GADM L2)
- Aurich280.1 km²50.2% of basin
- 270.9 km²48.6% of basin
- Emden6.5 km²1.2% of basin
- Wittmund0.4 km²0.1% of basin
30 intersecting protected areas
Niedersächsisches Wattenmeer
IUCN Not Assignedbiosphere reserve
52.00 km² overlap
Niedersächsisches Wattenmeer, Entwicklungszone
IUCN Not Assignedbiosphere reserve - transition area
52.00 km² overlap
Rheiderland
IUCN Not ReportedSpecial Protection Area (Birds Directive)
31.92 km² overlap
Rheiderland
IUCN VLandscape Protection Area
31.91 km² overlap
Fehntjer Tief und Umgebung
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
24.96 km² overlap
Fehntjer Tief
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.12 km² overlap
Emsmarsch von Leer bis Emden
IUCN Not ReportedSpecial Protection Area (Birds Directive)
21.29 km² overlap
Unterems und Außenems
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.04 km² overlap
Unterems
IUCN IVNature Reserve
15.73 km² overlap
21 more protected areassorted by overlap area
Nature Reserve
12.09 km² overlap
Nature Reserve
7.95 km² overlap
Oldehave
IUCN VLandscape Protection Area
5.71 km² overlap
Landscape Protection Area
5.30 km² overlap
Landscape Protection Area
4.98 km² overlap
Landscape Protection Area
4.50 km² overlap
Landscape Protection Area
4.39 km² overlap
Kollrunger Moor und Klinge
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.65 km² overlap
Wiesmoor-Klinge
IUCN IVNature Reserve
3.49 km² overlap
Landscape Protection Area
3.08 km² overlap
Ihlower Forst
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.69 km² overlap
Ihlower Forst
IUCN IVNature Reserve
2.66 km² overlap
Veenhuser Königsmoor
IUCN IVNature Reserve
2.15 km² overlap
Neues Moor - Herrenmoor
IUCN VLandscape Protection Area
1.82 km² overlap
Oldehave
IUCN VLandscape Protection Area
1.80 km² overlap
Kollrunger Moor
IUCN IVNature Reserve
1.38 km² overlap
Brockzeteler Moor
IUCN IVNature Reserve
1.22 km² overlap
Landscape Protection Area
1.08 km² overlap
Am Ottermeer
IUCN VLandscape Protection Area
1.04 km² overlap
Holle Sand
IUCN IVNature Reserve
0.45 km² overlap
Wolfmeer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.33 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 019 distinct species · 24 325 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Ems : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 129 interactions GloBI sur 6 types (connectance 16.5%, 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°
8,8°C
Annual rain
784mm
Moisture idx (CMI)
0,20
Runoff
463mm/an
PET
627mm
AET
517mm
Mean slope
0,2°
Water table
5cm
Forest
0%
Crops
22%
Urban
7%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)