HydroBASINS lev08 watershed · #2080434280
Bassin de Obergraben
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 : Bad Kreuznach, Donnersbergkreis
Sub-basin area
65km²
Upstream area
2 889,6km²
Discharge
23,68m³/s
Mean elev.
240m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Nahe1593 km²
- Bassin de Nußbach233 km²
2 dept-equivalent regions (GADM L2)
- 63.3 km²97.0% of basin
- 1.9 km²3.0% of basin
8 intersecting protected areas
Nahetal
IUCN VLandscape Protection Area
42.19 km² overlap
Nahetal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
17.77 km² overlap
Nahetal zwischen Simmertal und Bad Kreuznach
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.18 km² overlap
Landscape Protection Area
4.75 km² overlap
Lemberg
IUCN IVNature Reserve
2.36 km² overlap
Nature Reserve
0.93 km² overlap
Rotenfels
IUCN IVNature Reserve
0.61 km² overlap
Nahegau
IUCN IVNature Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 977 distinct species · 57 408 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Obergraben : 20 espèces reliées par 93 interactions GloBI sur 5 types (connectance 15.6%, filtre Serrano α=0.2). 15 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°
8,8°C
Annual rain
630mm
Moisture idx (CMI)
-0,17
Runoff
204mm/an
PET
762mm
AET
526mm
Mean slope
7,4°
Water table
482cm
Forest
9%
Crops
46%
Urban
8%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)