HydroBASINS lev08 watershed · #2080023810
Bassin de Hooksieler Tief
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 : Friesland, Wilhelmshaven, Wittmund
Sub-basin area
343,5km²
Upstream area
343,5km²
Discharge
0,45m³/s
Mean elev.
0m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 240.4 km²69.7% of basin
- Wilhelmshaven51.1 km²14.8% of basin
- Wittmund42.5 km²12.3% of basin
30 intersecting protected areas
Niedersächsisches Wattenmeer
IUCN Not Assignedbiosphere reserve
125.27 km² overlap
Niedersächsisches Wattenmeer, Entwicklungszone
IUCN Not Assignedbiosphere reserve - transition area
114.72 km² overlap
Wangerland
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.19 km² overlap
Landscape Protection Area
19.05 km² overlap
Wetland of International Importance (Ramsar Site)
14.96 km² overlap
Waddensea of Lower Saxony
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
13.54 km² overlap
Niedersächsisches Wattenmeer
IUCN IINational Park
10.93 km² overlap
Wadden Sea
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
10.91 km² overlap
Niedersächsisches Wattenmeer und angrenzendes Küstenmeer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.52 km² overlap
21 more protected areassorted by overlap area
Nationalpark Niedersächsisches Wattenmeer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.52 km² overlap
Niedersächsisches Wattenmeer, Kernzone
IUCN Not Assignedbiosphere reserve - core area
7.80 km² overlap
Niedersächsisches Wattenmeer
IUCN Not ReportedMarine Protected Area (OSPAR)
7.07 km² overlap
Voslapper Groden-Süd
IUCN IVNature Reserve
3.85 km² overlap
Voslapper Groden-Süd
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.62 km² overlap
Moorhausen
IUCN VLandscape Protection Area
3.22 km² overlap
Niedersächsisches Wattenmeer, Pflegezone
IUCN Not Assignedbiosphere reserve - buffer zone
2.75 km² overlap
Voslapper Groden-Nord
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.58 km² overlap
Voslapper Groden-Nord
IUCN IVNature Reserve
2.54 km² overlap
Jeversches Moorland
IUCN VLandscape Protection Area
2.26 km² overlap
Mahnmal Upschloot
IUCN VLandscape Protection Area
1.47 km² overlap
Teichfledermausgewässer
IUCN VLandscape Protection Area
1.11 km² overlap
Mahnmal Upschlott
IUCN VLandscape Protection Area
1.08 km² overlap
Feldhausen-Barkel
IUCN VLandscape Protection Area
0.86 km² overlap
Landscape Protection Area
0.61 km² overlap
Ziallerns
IUCN VLandscape Protection Area
0.33 km² overlap
Fischhausen
IUCN IVNature Reserve
0.17 km² overlap
Feldhauser Moor
IUCN IVNature Reserve
0.14 km² overlap
Teichfledermaus-Habitate im Raum Wilhelmshaven
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.10 km² overlap
Landscape Protection Area
0.09 km² overlap
Landscape Protection Area
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 029 distinct species · 33 478 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 Hooksieler Tief : 32 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 7 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°
8,7°C
Annual rain
785mm
Moisture idx (CMI)
0,24
Runoff
501mm/an
PET
600mm
AET
502mm
Mean slope
0,2°
Water table
6cm
Forest
6%
Crops
26%
Urban
12%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)