HydroBASINS lev08 watershed · #2080454600
Bassin de Naab
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 : Neumarkt in der Oberpfalz, Regensburg
Sub-basin area
129,9km²
Upstream area
5 482,6km²
Discharge
51,16m³/s
Mean elev.
444m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Vils1254 km²
- Bassin de Naab563 km²
2 dept-equivalent regions (GADM L2)
- 127.5 km²97.8% of basin
- 2.8 km²2.2% of basin
11 intersecting protected areas
Landscape Protection Area
72.50 km² overlap
Flanken des Naabdurchbruchtals zwischen Kallmünz und Mariaort
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.58 km² overlap
Felsen und Hangwälder im Altmühl-, Naab-, Laber- und Donautal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.15 km² overlap
Naab unterhalb Schwarzenfeld und Donau von Poikam bis Regensburg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.63 km² overlap
Trockenhänge bei Kallmünz
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.88 km² overlap
Nature Reserve
0.54 km² overlap
Landscape Protection Area
0.51 km² overlap
Nature Reserve
0.41 km² overlap
Vils von Vilseck bis zur Mündung in die Naab
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
2 more protected areassorted by overlap area
Drabafelsen
IUCN IVNature Reserve
0.00 km² overlap
Mausohrwochenstuben im Oberpfälzer Jura
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 931 distinct species · 53 155 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Naab : 20 espèces reliées par 21 interactions GloBI sur 3 types (connectance 7.0%, filtre Serrano α=0.2). 5 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
698mm
Moisture idx (CMI)
-0,08
Runoff
296mm/an
PET
761mm
AET
575mm
Mean slope
5,6°
Water table
309cm
Forest
50%
Crops
23%
Urban
4%
Protected
57%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)