HydroBASINS lev08 watershed · #2080033490
Bassin de Glomma
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 11 administrative regions : Borge, Fredrikstad, Halden, Kraakeroey, Rakkestad +6
Sub-basin area
521,3km²
Upstream area
41 121,9km²
Discharge
652,81m³/s
Mean elev.
91m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rakkestadelva468 km²
- Bassin de Glomma65 km²
11 dept-equivalent regions (GADM L2)
- 289.8 km²55.3% of basin
- 58.1 km²11.1% of basin
- 53.5 km²10.2% of basin
- 52.8 km²10.1% of basin
- 28.6 km²5.5% of basin
- 21.6 km²4.1% of basin
- 14.0 km²2.7% of basin
- 3.2 km²0.6% of basin
3 moreFull L2 list
- Råde2.4 km² · 0.5%
- Kraakeroey0.1 km² · 0.0%
- Spydeberg0.1 km² · 0.0%
23 intersecting protected areas
Rokke
IUCN VProtected Landscape
3.85 km² overlap
Rokke
IUCN Not ReportedEmerald Network
3.85 km² overlap
Ågårdselva
IUCN IaNature Reserve
1.94 km² overlap
Storesand
IUCN IaNature Reserve
1.32 km² overlap
Storesand
IUCN Not ReportedEmerald Network
1.32 km² overlap
Vestvannet
IUCN IaNature Reserve
1.22 km² overlap
Asbjørnåsen
IUCN IaNature Reserve
0.67 km² overlap
Stiksåsen
IUCN IaNature Reserve
0.65 km² overlap
Sagåsen og Stueåsen
IUCN IaNature Reserve
0.56 km² overlap
14 more protected areassorted by overlap area
Ågårdselva og Valbrekke
IUCN Not ReportedEmerald Network
0.28 km² overlap
Bråneåsen
IUCN IaNature Reserve
0.26 km² overlap
Brentåsen
IUCN IaNature Reserve
0.14 km² overlap
Regimentsmyra
IUCN IaNature Reserve
0.13 km² overlap
Finnskutt og Haugen
IUCN IaNature Reserve
0.13 km² overlap
Stordamsmyra
IUCN IaNature Reserve
0.09 km² overlap
Stordamsmyra
IUCN Not ReportedEmerald Network
0.09 km² overlap
Solgårdhavna
IUCN IaNature Reserve
0.06 km² overlap
Kiærmarka
IUCN IaNature Reserve
0.06 km² overlap
Rahaugen
IUCN IIINatural Monument
0.04 km² overlap
Desiderialunden
IUCN IaNature Reserve
0.01 km² overlap
Skinnerflo
IUCN IaNature Reserve
0.01 km² overlap
Skinnerflo
IUCN Not ReportedEmerald Network
0.01 km² overlap
Søndre Glenne
IUCN Not ReportedNatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 917 distinct species · 252 381 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Glomma : 27 espèces reliées par 110 interactions GloBI sur 5 types (connectance 16.5%, filtre Serrano α=0.2). 10 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°
6,4°C
Annual rain
786mm
Moisture idx (CMI)
0,35
Runoff
528mm/an
PET
512mm
AET
435mm
Mean slope
3,8°
Water table
253cm
Forest
74%
Crops
24%
Urban
13%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)