HydroBASINS lev08 watershed · #2080454380
Bassin de Donau
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 : Regensburg, Regensburg (Kreisfreie Stadt)
Sub-basin area
39,2km²
Upstream area
32 392,4km²
Discharge
430,17m³/s
Mean elev.
383m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Schwarze Laber729 km²
- Bassin de Naab130 km²
2 dept-equivalent regions (GADM L2)
- 19.9 km²50.5% of basin
- 19.5 km²49.5% of basin
5 intersecting protected areas
Landscape Protection Area
6.09 km² overlap
Landscape Protection Area
1.70 km² overlap
Naab unterhalb Schwarzenfeld und Donau von Poikam bis Regensburg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.03 km² overlap
Felsen und Hangwälder im Altmühl-, Naab-, Laber- und Donautal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.01 km² overlap
Flanken des Naabdurchbruchtals zwischen Kallmünz und Mariaort
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 558 distinct species · 18 860 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Donau : 13 espèces reliées par 42 interactions GloBI sur 3 types (connectance 20.0%, filtre Serrano α=0.2). 8 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°
8,2°C
Annual rain
679mm
Moisture idx (CMI)
-0,13
Runoff
298mm/an
PET
777mm
AET
570mm
Mean slope
3,6°
Water table
275cm
Forest
0%
Crops
59%
Urban
56%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)