HydroBASINS lev08 watershed · #2080033480

Bassin de Skjebergbekken

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 across 2 countries : Borge, Fredrikstad, Halden, Hvaler, Sarpsborg +1

Coastal basin 5% lakePfafstetter: 25101000

Sub-basin area

223,9km²

Upstream area

223,9km²

Discharge

3,83m³/s

Mean elev.

42m

Administrative coverage

6 dept-equivalent regions (GADM L2)

Sarpsborg
Ãstfold · Norway
107.5 km²
47.8% of basin
Borge
Ãstfold · Norway
46.5 km²
20.6% of basin
Halden
Ãstfold · Norway
39.2 km²
17.4% of basin
Fredrikstad
Ãstfold · Norway
6.1 km²
2.7% of basin
Hvaler
Ãstfold · Norway
3.2 km²
1.4% of basin
Strömstad
Västra Götaland · Sweden
0.1 km²
0.1% of basin

16 intersecting protected areas

Øra
IUCN Ia
Wetland of International Importance (Ramsar Site)
8.85 km² overlap
Øra
IUCN Not Reported
Emerald Network
8.85 km² overlap
Øra
IUCN Ia
Nature Reserve
8.85 km² overlap
Thorsøma
IUCN Ia
Nature Reserve
0.46 km² overlap
Skjebergkilen
IUCN Ia
Nature Reserve
0.36 km² overlap
Søndre Haugstenåsen
IUCN Ia
Nature Reserve
0.32 km² overlap
Søndre Haugstenåsen
IUCN Not Reported
Emerald Network
0.32 km² overlap
Jørstadmyra
IUCN Ia
Nature Reserve
0.30 km² overlap
Hansemakerkilen
IUCN Ia
Nature Reserve
0.25 km² overlap

7 more protected areassorted by overlap area

Hansemakerkilen
IUCN Not Reported
Emerald Network
0.25 km² overlap
Gansrød
IUCN Ia
Nature Reserve
0.15 km² overlap
Nordre Fugleskjær
IUCN IV
Wildlife Conservation Area
0.12 km² overlap
Regimentsmyra
IUCN Ia
Nature Reserve
0.07 km² overlap
Idefjorden
IUCN Not Assigned
Natura 2000 SCI
0.04 km² overlap
Idefjorden
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.04 km² overlap
Skorpen
IUCN IV
Wildlife Conservation Area
0.02 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

7 719 distinct species · 237 936 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 36 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Skjebergbekken : 27 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 5 types (connectance 15.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

107

Connectance

0.152

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

6,8°C

Annual rain

772mm

Moisture idx (CMI)

0,34

Runoff

534mm/an

PET

506mm

AET

429mm

Mean slope

3,4°

Water table

185cm

Forest

70%

Crops

33%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)