HydroBASINS lev08 watershed · #2080421680
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 6 administrative regions : Koblenz, Limburg-Weilburg, Rhein-Lahn-Kreis, Rheingau-Taunus-Kreis, Westerwaldkreis +1
Sub-basin area
1 041,3km²
Upstream area
5 913km²
Discharge
51,17m³/s
Mean elev.
314m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Elbbach320 km²
- Bassin de Lahn21 km²
6 dept-equivalent regions (GADM L2)
- 555.3 km²53.1% of basin
- 260.3 km²24.9% of basin
- 202.4 km²19.4% of basin
- 23.9 km²2.3% of basin
- Koblenz3.0 km²0.3% of basin
- 0.1 km²0.0% of basin
30 intersecting protected areas
Lahnhänge
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
46.18 km² overlap
Montabaurer Höhe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.32 km² overlap
Taunuswälder bei Mudershausen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.67 km² overlap
Westerwälder Kuppenland
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.59 km² overlap
Westerwald
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.09 km² overlap
Mittelrheintal
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.89 km² overlap
Lahnhänge
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.81 km² overlap
Staatsforst Stelzenbach
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.88 km² overlap
Aartalhänge zwischen Burg Hohenstein und Lindschied
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.40 km² overlap
21 more protected areassorted by overlap area
Eisenbachwiesen
IUCN IVNature Reserve
1.95 km² overlap
Wald nordöstlich Huppert
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.91 km² overlap
Auenverbund Lahn-Dill
IUCN VLandscape Protection Area
1.73 km² overlap
Hohlenfelsbachtal
IUCN IVNature Reserve
1.11 km² overlap
Malberg
IUCN IVNature Reserve
0.97 km² overlap
Zorner Kopf
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.88 km² overlap
Buchenwälder nördlich von Wiesbaden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.85 km² overlap
Gabelstein-Hölloch
IUCN IVNature Reserve
0.68 km² overlap
Feldflur bei Limburg
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.61 km² overlap
Nature Reserve
0.47 km² overlap
Scheiderwald bei Hennethal
IUCN IVNature Reserve
0.46 km² overlap
Scheiderwald bei Hennethal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.46 km² overlap
Schleuse Hollerich
IUCN IVNature Reserve
0.43 km² overlap
Tongrube Beckershaid
IUCN IVNature Reserve
0.29 km² overlap
Pohlbachtal bei Adolfseck
IUCN IVNature Reserve
0.25 km² overlap
Aartal zwischen Hahn und Bleidenstadt
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
Stelzenbachwiesen
IUCN IVNature Reserve
0.20 km² overlap
Steinbruch am Breiten Berg
IUCN IVNature Reserve
0.17 km² overlap
Spiessweiher
IUCN IVNature Reserve
0.15 km² overlap
Ruppertsklamm
IUCN IVNature Reserve
0.15 km² overlap
Steinbruch Fachingen
IUCN IVNature Reserve
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 860 distinct species · 112 346 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 : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 113 interactions GloBI sur 6 types (connectance 20.1%, 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°
8,5°C
Annual rain
716mm
Moisture idx (CMI)
-0,01
Runoff
236mm/an
PET
724mm
AET
546mm
Mean slope
6,2°
Water table
423cm
Forest
41%
Crops
22%
Urban
13%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)