HydroBASINS lev08 watershed · #2080454200
Bassin de Altmühl
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 2 administrative regions : Eichstätt, Neumarkt in der Oberpfalz
Sub-basin area
71,7km²
Upstream area
2 496,9km²
Discharge
20,42m³/s
Mean elev.
473m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sulz208 km²
- Bassin de Altmühl51 km²
2 dept-equivalent regions (GADM L2)
- 47.9 km²66.6% of basin
- 24.1 km²33.4% of basin
8 intersecting protected areas
Landscape Protection Area
36.37 km² overlap
Trockenhänge im unteren Altmühltal mit Laaberleiten und Galgental
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.11 km² overlap
Mittleres Altmühltal mit Wellheimer Trockental und Schambachtal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.00 km² overlap
Felsen und Hangwälder im Altmühl-, Naab-, Laber- und Donautal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.52 km² overlap
Felsen und Hangwälder im Altmühltal und Wellheimer Trockental
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.48 km² overlap
Arzberg bei Beilngries
IUCN IVNature Reserve
0.66 km² overlap
Magerrasen auf der Albhochfläche im Lkr. Eichstätt
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.18 km² overlap
Weiße, Wissinger, Breitenbrunner Laaber u. Kreuzberg bei Dietfurt
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 429 distinct species · 9 244 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Altmühl : 18 espèces reliées par 47 interactions GloBI sur 4 types (connectance 20.3%, filtre Serrano α=0.2). 4 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°
7,8°C
Annual rain
740mm
Moisture idx (CMI)
-0,03
Runoff
279mm/an
PET
762mm
AET
598mm
Mean slope
4,6°
Water table
360cm
Forest
19%
Crops
45%
Urban
0%
Protected
51%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)