HydroBASINS lev08 watershed · #2080358610
Bassin de Calhorner Mühlenbach
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 3 administrative regions : Cloppenburg, Osnabrück, Vechta
Sub-basin area
541,6km²
Upstream area
541,6km²
Discharge
7,67m³/s
Mean elev.
38m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Vechta361.9 km²66.6% of basin
- Cloppenburg178.6 km²32.8% of basin
- 3.2 km²0.6% of basin
30 intersecting protected areas
Dammer Berge
IUCN VLandscape Protection Area
22.37 km² overlap
Landscape Protection Area
8.26 km² overlap
Landscape Protection Area
6.31 km² overlap
Dammer Berge
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.95 km² overlap
Landscape Protection Area
3.54 km² overlap
Burg Dinklage
IUCN VLandscape Protection Area
2.91 km² overlap
Landscape Protection Area
2.09 km² overlap
Burgwald Dinklage
IUCN IVNature Reserve
1.26 km² overlap
Wald bei Burg Dinklage
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.18 km² overlap
21 more protected areassorted by overlap area
Baumreihen
IUCN VLandscape Protection Area
0.88 km² overlap
Polder Lüsche
IUCN IVNature Reserve
0.39 km² overlap
Waldgebiet um Gut Hopen
IUCN VLandscape Protection Area
0.28 km² overlap
Hemmelter Moor
IUCN IVNature Reserve
0.26 km² overlap
Dammer Bergsee
IUCN IVNature Reserve
0.25 km² overlap
Harmerholz
IUCN VLandscape Protection Area
0.24 km² overlap
Landscape Protection Area
0.18 km² overlap
Landscape Protection Area
0.15 km² overlap
Bruchwald
IUCN VLandscape Protection Area
0.14 km² overlap
Landscape Protection Area
0.13 km² overlap
Bruchwald
IUCN VLandscape Protection Area
0.09 km² overlap
Landscape Protection Area
0.05 km² overlap
Mühlenteich Lohne
IUCN VLandscape Protection Area
0.04 km² overlap
Waldbestand "Im Fange"
IUCN VLandscape Protection Area
0.04 km² overlap
Schlatt bei Garthe
IUCN VLandscape Protection Area
0.02 km² overlap
Bachlauf mit Steilufer
IUCN VLandscape Protection Area
0.02 km² overlap
Landscape Protection Area
0.02 km² overlap
Bruchbusch
IUCN VLandscape Protection Area
0.01 km² overlap
Alter Baumbestand
IUCN VLandscape Protection Area
0.01 km² overlap
Klün-Pott
IUCN VLandscape Protection Area
0.01 km² overlap
Mühlenteich in Spreda
IUCN VLandscape Protection Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 000 distinct species · 26 836 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Calhorner Mühlenbach : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 127 interactions GloBI sur 6 types (connectance 18.1%, filtre Serrano α=0.2). 16 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°
8,7°C
Annual rain
797mm
Moisture idx (CMI)
0,12
Runoff
446mm/an
PET
703mm
AET
558mm
Mean slope
0,5°
Water table
49cm
Forest
5%
Crops
53%
Urban
11%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)