HydroBASINS lev08 watershed · #2080437110
Bassin de Zenn
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 9 administrative regions : Ansbach, Erlangen, Erlangen-Höchstadt, Forchheim, Fürth +4
Sub-basin area
1 074,2km²
Upstream area
4 466,3km²
Discharge
34,03m³/s
Mean elev.
351m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Fränkische Rezat2205 km²
- Bassin de Pegnitz1187 km²
9 dept-equivalent regions (GADM L2)
- 342.8 km²31.8% of basin
- 243.4 km²22.6% of basin
- 164.8 km²15.3% of basin
- 136.0 km²12.6% of basin
- 78.0 km²7.2% of basin
- 41.6 km²3.9% of basin
- 33.3 km²3.1% of basin
- 20.8 km²1.9% of basin
1 moreFull L2 list
- Ansbach17.1 km² · 1.6%
30 intersecting protected areas
Landscape Protection Area
137.79 km² overlap
Nürnberger Reichswald
IUCN Not ReportedSpecial Protection Area (Birds Directive)
75.09 km² overlap
Markwald bei Baiersdorf
IUCN Not ReportedSpecial Protection Area (Birds Directive)
28.52 km² overlap
Landscape Protection Area
26.79 km² overlap
Landscape Protection Area
15.99 km² overlap
Landscape Protection Area
15.35 km² overlap
Streuobst, Kopfeichen und Quellen am Hetzleser Berg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.35 km² overlap
Sandheiden im mittelfränkischen Becken
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.56 km² overlap
Tennenloher Forst
IUCN IVNature Reserve
9.56 km² overlap
21 more protected areassorted by overlap area
Regnitztal
IUCN VLandscape Protection Area
9.27 km² overlap
Landscape Protection Area
7.79 km² overlap
Regnitz- und Unteres Wiesenttal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.05 km² overlap
Zenn von Stöckach bis zur Mündung
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.04 km² overlap
Mönau
IUCN VLandscape Protection Area
5.54 km² overlap
Landscape Protection Area
4.94 km² overlap
Landscape Protection Area
4.91 km² overlap
LSG Mohrhof
IUCN VLandscape Protection Area
4.86 km² overlap
Anstieg der Frankenhöhe östlich der A 7
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.65 km² overlap
Landscape Protection Area
3.83 km² overlap
Kraftshofer Forst
IUCN VLandscape Protection Area
3.54 km² overlap
Gründlachtal - Ost
IUCN VLandscape Protection Area
3.52 km² overlap
Landscape Protection Area
3.22 km² overlap
Markwald bei Baiersdorf
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.06 km² overlap
Fürther und Zirndorfer Stadtwald
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.94 km² overlap
Aischgrund
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.65 km² overlap
Meilwald mit Eisgrube
IUCN VLandscape Protection Area
2.26 km² overlap
LSG "Mönau"
IUCN VLandscape Protection Area
2.04 km² overlap
Teiche und Feuchtflächen im Aischgrund, Weihergebiet bei Mohrhof
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.02 km² overlap
Aurach zwischen Emskirchen und Herzogenaurach
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.97 km² overlap
Landscape Protection Area
1.94 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 980 distinct species · 311 217 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Zenn : 21 espèces reliées par 106 interactions GloBI sur 5 types (connectance 17.8%, 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°
8,5°C
Annual rain
666mm
Moisture idx (CMI)
-0,15
Runoff
226mm/an
PET
784mm
AET
559mm
Mean slope
2,7°
Water table
249cm
Forest
21%
Crops
34%
Urban
24%
Protected
27%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)