HydroBASINS lev08 watershed · #2080023370
Bassin de De Tsjonger of De Kuunder
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 12 administrative regions : Assen, De Fryske Marren, Heerenveen, IJsselmeer, Midden-Drenthe +7
Sub-basin area
924,7km²
Upstream area
924,7km²
Discharge
13,9m³/s
Mean elev.
2m
Administrative coverage
12 dept-equivalent regions (GADM L2)
- 229.8 km²24.7% of basin
- 213.6 km²23.0% of basin
- 156.4 km²16.8% of basin
- 101.3 km²10.9% of basin
- 86.6 km²9.3% of basin
- 67.5 km²7.3% of basin
- 26.8 km²2.9% of basin
- 25.8 km²2.8% of basin
4 moreFull L2 list
- Opsterland15.6 km² · 1.7%
- Noordenveld3.9 km² · 0.4%
- Assen0.6 km² · 0.1%
- IJsselmeer0.6 km² · 0.1%
23 intersecting protected areas
NNN-FR
IUCN Not AssignedNature Reserves owned by professional nature management organizations
85.23 km² overlap
NNN-OV
IUCN Not AssignedNature Reserves owned by professional nature management organizations
35.65 km² overlap
Nature Conservation Act
30.95 km² overlap
Drents-Friese Wold & Leggelderveld
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.95 km² overlap
Weerribben-Wieden
IUCN IINational Park
30.92 km² overlap
Weerribben
IUCN IIWetland of International Importance (Ramsar Site)
30.66 km² overlap
Weerribben
IUCN IVNature Conservation Act
30.62 km² overlap
Weerribben
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
30.62 km² overlap
Weerribben
IUCN Not ReportedSpecial Protection Area (Birds Directive)
30.62 km² overlap
14 more protected areassorted by overlap area
NNN-DR
IUCN Not AssignedNature Reserves owned by professional nature management organizations
30.26 km² overlap
Drents-Friese Wold & Leggelderveld
IUCN Not ReportedSpecial Protection Area (Birds Directive)
27.73 km² overlap
Drents-Friese Wold
IUCN IINational Park
20.69 km² overlap
Rottige Meenthe & Brandemeer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.69 km² overlap
Wetland of International Importance (Ramsar Site)
13.69 km² overlap
Rottige Meenthe & Brandemeer
IUCN IVNature Conservation Act
13.69 km² overlap
NNN-FL
IUCN Not AssignedNature Reserves owned by professional nature management organizations
13.05 km² overlap
Fochteloërveen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
12.44 km² overlap
Fochteloërveen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
12.44 km² overlap
Fochteloërveen
IUCN IVNature Conservation Act
12.44 km² overlap
Bakkeveense Duinen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.00 km² overlap
Bakkeveense Duinen
IUCN IVNature Conservation Act
1.00 km² overlap
Witterveld
IUCN IVNature Conservation Act
0.61 km² overlap
Witterveld
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.61 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 824 distinct species · 2 041 599 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 De Tsjonger of De Kuunder : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 5 types (connectance 11.7%, filtre Serrano α=0.2). 12 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
786mm
Moisture idx (CMI)
0,17
Runoff
469mm/an
PET
650mm
AET
526mm
Mean slope
0,2°
Water table
12cm
Forest
4%
Crops
16%
Urban
4%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)