HydroBASINS lev08 watershed · #2080023640
Bassin de Knockster 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 : Aurich, Emden, Wittmund
Sub-basin area
342km²
Upstream area
342km²
Discharge
4,46m³/s
Mean elev.
0m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- Aurich280.6 km²81.7% of basin
- Emden43.4 km²12.6% of basin
- Wittmund19.5 km²5.7% of basin
25 intersecting protected areas
Krummhörn
IUCN VLandscape Protection Area
32.40 km² overlap
Krummhörn
IUCN Not ReportedSpecial Protection Area (Birds Directive)
32.03 km² overlap
Ostfriesische Meere
IUCN VLandscape Protection Area
20.04 km² overlap
Ostfriesische Meere
IUCN Not ReportedSpecial Protection Area (Birds Directive)
17.76 km² overlap
Landscape Protection Area
14.15 km² overlap
Ewiges Meer und Umgebung
IUCN IVNature Reserve
12.87 km² overlap
Ewiges Meer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.74 km² overlap
Ewiges Meer, Großes Moor bei Aurich
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.25 km² overlap
Landscape Protection Area
3.81 km² overlap
16 more protected areassorted by overlap area
Landscape Protection Area
3.25 km² overlap
Schlafdeich Constantia
IUCN VLandscape Protection Area
0.39 km² overlap
Landscape Protection Area
0.17 km² overlap
Niedersächsisches Wattenmeer, Entwicklungszone
IUCN Not Assignedbiosphere reserve - transition area
0.14 km² overlap
Niedersächsisches Wattenmeer
IUCN Not Assignedbiosphere reserve
0.14 km² overlap
Areal bei der Burg Hinte
IUCN VLandscape Protection Area
0.10 km² overlap
Unterems und Außenems
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Außenems
IUCN IVNature Reserve
0.03 km² overlap
Baumbestand "Gut Kempe"
IUCN VLandscape Protection Area
0.03 km² overlap
Wetland of International Importance (Ramsar Site)
0.02 km² overlap
Teichfledermaus-Gewässer im Raum Aurich
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Nature Reserve
0.01 km² overlap
Niedersächsisches Wattenmeer
IUCN Not ReportedMarine Protected Area (OSPAR)
0.00 km² overlap
Niedersächsisches Wattenmeer und angrenzendes Küstenmeer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.00 km² overlap
Nationalpark Niedersächsisches Wattenmeer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Wadden Sea
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 073 distinct species · 15 762 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 Knockster Tief : 16 espèces reliées par 126 interactions GloBI sur 5 types (connectance 23.9%, filtre Serrano α=0.2). 17 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°
8,9°C
Annual rain
787mm
Moisture idx (CMI)
0,23
Runoff
456mm/an
PET
604mm
AET
504mm
Mean slope
0,1°
Water table
4cm
Forest
2%
Crops
37%
Urban
10%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)