HydroBASINS lev08 watershed · #2080023940
Bassin de Weser
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 3 administrative regions : Cuxhaven, Osterholz, Wesermarsch
Sub-basin area
78,4km²
Upstream area
44 776,2km²
Discharge
448,3m³/s
Mean elev.
-1m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Hunte2653 km²
- Bassin de Kimmer Bäke267 km²
3 dept-equivalent regions (GADM L2)
- 53.0 km²67.3% of basin
- 23.7 km²30.1% of basin
- Cuxhaven2.1 km²2.6% of basin
16 intersecting protected areas
Unterweser
IUCN Not ReportedSpecial Protection Area (Birds Directive)
13.99 km² overlap
Unterwesermarsch
IUCN VLandscape Protection Area
7.69 km² overlap
Unterwesermarsch
IUCN IVNature Reserve
3.82 km² overlap
Tideweser
IUCN IVNature Reserve
1.77 km² overlap
Nebenarme der Weser mit Strohauser Plate und Juliusplate
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.45 km² overlap
Hammelwarder Sand
IUCN VLandscape Protection Area
1.36 km² overlap
Teichfledermaus-Gewässer im Raum Bremerhaven/Bremen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.62 km² overlap
Unterweser
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.49 km² overlap
Landscape Protection Area
0.31 km² overlap
7 more protected areassorted by overlap area
Landscape Protection Area
0.14 km² overlap
Teichfledermausgewässer
IUCN IVNature Reserve
0.11 km² overlap
Landscape Protection Area
0.10 km² overlap
Untere Hunte
IUCN VLandscape Protection Area
0.08 km² overlap
Mittlere und Untere Hunte (mit Barneführer Holz und Schreensmoor)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Nature Reserve
0.06 km² overlap
Dornebbe, Braker Sieltief und Colmarer Tief
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
957 distinct species · 5 401 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 Weser : 28 espèces reliées par 111 interactions GloBI sur 5 types (connectance 15.0%, filtre Serrano α=0.2). 11 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
755mm
Moisture idx (CMI)
0,09
Runoff
467mm/an
PET
687mm
AET
538mm
Mean slope
0,1°
Water table
3cm
Forest
1%
Crops
13%
Urban
11%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)