HydroBASINS lev08 watershed · #2080408600
Bassin de Lahn
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 4 administrative regions : Lahn-Dill-Kreis, Marburg-Biedenkopf, Siegen-Wittgenstein, Waldeck-Frankenberg
Sub-basin area
650,1km²
Upstream area
650,3km²
Discharge
6,55m³/s
Mean elev.
396m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 435.9 km²66.8% of basin
- 153.5 km²23.5% of basin
- 52.4 km²8.0% of basin
- 10.7 km²1.6% of basin
30 intersecting protected areas
LSG-Bad Laasphe
IUCN VLandscape Protection Area
106.96 km² overlap
Lahnhänge zwischen Biedenkopf und Marburg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
84.89 km² overlap
Hessisches Rothaargebirge
IUCN Not ReportedSpecial Protection Area (Birds Directive)
59.73 km² overlap
Burgwald
IUCN Not ReportedSpecial Protection Area (Birds Directive)
47.08 km² overlap
Buchenwälder und Wiesentäler bei Bad Laasphe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.05 km² overlap
Auenverbund Lahn-Ohm
IUCN VLandscape Protection Area
16.07 km² overlap
Nature Reserve
12.11 km² overlap
Rothaarkamm und Wiesentäler
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.38 km² overlap
Hauberge bei Haiger
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.11 km² overlap
21 more protected areassorted by overlap area
LSG-Bad Berleburg
IUCN VLandscape Protection Area
5.98 km² overlap
Nature Reserve
4.76 km² overlap
Lahnwälder bei Katzenbach
IUCN IVNature Reserve
4.66 km² overlap
Nature Reserve
4.53 km² overlap
Obere Lahn und Wetschaft mit Nebengewässern
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.38 km² overlap
LSG-Erndtebrueck
IUCN VLandscape Protection Area
2.95 km² overlap
Nature Reserve
1.74 km² overlap
Extensivgrünland bei Ober- und Niederhörlen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.59 km² overlap
Christenberger Talgrund
IUCN IVNature Reserve
1.17 km² overlap
Sackpfeife
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.14 km² overlap
Struth von Bottenhorn und Erweiterungsflächen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.06 km² overlap
Christenberger Talgrund
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.05 km² overlap
Die Struth von Bottenhorn
IUCN IVNature Reserve
0.71 km² overlap
Nature Reserve
0.51 km² overlap
Borstgrasrasen nördlich Simmersbach
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.50 km² overlap
Nature Reserve
0.49 km² overlap
Am Dimberg bei Steinperf
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.49 km² overlap
Am Dimberg bei Steinperf
IUCN IVNature Reserve
0.49 km² overlap
Lahnknie bei Michelbach
IUCN IVNature Reserve
0.38 km² overlap
Nature Reserve
0.35 km² overlap
Homberg bei Buchenau
IUCN IVNature Reserve
0.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 462 distinct species · 62 117 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 Lahn : 18 espèces reliées par 125 interactions GloBI sur 5 types (connectance 23.7%, 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°
7,8°C
Annual rain
911mm
Moisture idx (CMI)
0,24
Runoff
318mm/an
PET
681mm
AET
565mm
Mean slope
7,6°
Water table
420cm
Forest
62%
Crops
11%
Urban
5%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)