HydroBASINS lev08 watershed · #2080455190
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 6 administrative regions : Ansbach, Ansbach (Kreisfreie Stadt), Donau-Ries, Eichstätt, Neustadt an der Aisch-Bad Windsh +1
Sub-basin area
1 657,3km²
Upstream area
1 657,3km²
Discharge
13,15m³/s
Mean elev.
483m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 568.4 km²34.2% of basin
- 555.1 km²33.4% of basin
- 415.7 km²25.0% of basin
- 101.2 km²6.1% of basin
- 17.0 km²1.0% of basin
- 5.2 km²0.3% of basin
30 intersecting protected areas
Landscape Protection Area
570.60 km² overlap
Landscape Protection Area
131.26 km² overlap
Altmühltal mit Brunst-Schwaigau und Altmühlsee
IUCN Not ReportedSpecial Protection Area (Birds Directive)
50.01 km² overlap
Obere Altmühl mit Brunst-Schwaigau und Wiesmet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
44.69 km² overlap
Mittleres Altmühltal mit Wellheimer Trockental und Schambachtal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
33.42 km² overlap
Felsen und Hangwälder im Altmühltal und Wellheimer Trockental
IUCN Not ReportedSpecial Protection Area (Birds Directive)
28.81 km² overlap
Trauf der südlichen Frankenalb
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.85 km² overlap
Anstieg der Frankenhöhe östlich der A 7
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.50 km² overlap
Buchenwälder auf der Albhochfläche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.23 km² overlap
21 more protected areassorted by overlap area
Kammmolch-Habitate um Eichelberg und Fichtholz bei Colmberg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.12 km² overlap
Nature Reserve
2.02 km² overlap
Schambachtal mit Seitentälern
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.01 km² overlap
Burgstallwald bei Gunzenhausen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.18 km² overlap
Steinbruch Langenaltheim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.78 km² overlap
Gungoldinger Wacholderheide
IUCN IVNature Reserve
0.72 km² overlap
Trockenhänge bei Dollnstein
IUCN IVNature Reserve
0.62 km² overlap
Hutungen am Rother Berg und um Lehrberg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.35 km² overlap
Nature Reserve
0.31 km² overlap
Hutungen der Frankenhöhe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.31 km² overlap
Ellenbach
IUCN IVNature Reserve
0.28 km² overlap
Laubenbuch
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Arnsberger Leite
IUCN IVNature Reserve
0.21 km² overlap
Nature Reserve
0.20 km² overlap
Karrachsee
IUCN IVNature Reserve
0.20 km² overlap
Kühberg bei Gastenfelden
IUCN IVNature Reserve
0.17 km² overlap
Nature Reserve
0.15 km² overlap
Steinbruch am Schrandelberg bei Langenaltheim
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.14 km² overlap
Nature Reserve
0.14 km² overlap
Kappelwasen
IUCN IVNature Reserve
0.12 km² overlap
Schambachried
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 935 distinct species · 372 534 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 Altmühl : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 116 interactions GloBI sur 4 types (connectance 19.5%, 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°
7,9°C
Annual rain
748mm
Moisture idx (CMI)
-0,02
Runoff
258mm/an
PET
760mm
AET
600mm
Mean slope
3,4°
Water table
230cm
Forest
33%
Crops
35%
Urban
2%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)