HydroBASINS lev08 watershed · #2080213940
Bassin de Ljusnan
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 4 administrative regions : Bollnäs, Hudiksvall, Ljusdal, Ovanåker
Sub-basin area
1 342,5km²
Upstream area
15 216,3km²
Discharge
128,82m³/s
Mean elev.
209m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ljusnan1663 km²
- Bassin de Leån1139 km²
4 dept-equivalent regions (GADM L2)
- 637.8 km²47.2% of basin
- 560.6 km²41.5% of basin
- 113.4 km²8.4% of basin
- 38.6 km²2.9% of basin
30 intersecting protected areas
Mellanljusnan Korskrogen-Edeforsen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.27 km² overlap
Mellanljusnan Korskrogen-Edeforsen
IUCN Not AssignedNatura 2000 SCI
2.27 km² overlap
Mellanljusnan
IUCN Not ReportedWetland of International Importance (Ramsar Site)
2.27 km² overlap
Nature Reserve
2.24 km² overlap
2001183 Järvsöholmarna
IUCN IVNature Conservation Area
2.00 km² overlap
Järvsöholmarna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.98 km² overlap
Järvsöholmarna
IUCN IVNatura 2000 SCI
1.98 km² overlap
Ysberget-Laxtjärnsberget
IUCN IaNatura 2000 SPA
1.90 km² overlap
Ysberget-Laxtjärnsberget
IUCN IaNatura 2000 SCI
1.90 km² overlap
21 more protected areassorted by overlap area
Ysberget-Laxtjärnsberget
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.90 km² overlap
Ysberget-Laxtjärnsberget
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.90 km² overlap
2001184 Kläppaängarna
IUCN IVNature Conservation Area
1.87 km² overlap
2000939 Svartviksberget
IUCN IaNature Reserve
1.50 km² overlap
2004467 Västeräng
IUCN Not AssignedOthers
1.17 km² overlap
2005491 Stora Bolleberget
IUCN IaNature Reserve
0.99 km² overlap
2025930 Järvsöklacken
IUCN IIINature Reserve
0.85 km² overlap
2001181 Galvån
IUCN IIINature Conservation Area
0.81 km² overlap
Stensjön
IUCN Not AssignedNatura 2000 SCI
0.55 km² overlap
Stensjön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.55 km² overlap
Kyrksjön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.41 km² overlap
Kyrksjön
IUCN Not AssignedNatura 2000 SCI
0.41 km² overlap
A311695
IUCN Not ApplicableVoluntary set-aside areas
0.26 km² overlap
Galvån
IUCN IIINatura 2000 SCI
0.22 km² overlap
Galvån
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
2051358 Hälberget
IUCN IaNature Reserve
0.20 km² overlap
Bondarvsvallsberget
IUCN IaNatura 2000 SCI
0.18 km² overlap
Bondarvsvallsberget
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.18 km² overlap
2000467 Bondarvsvallsberget
IUCN IaNature Reserve
0.18 km² overlap
A406462
IUCN Not ApplicableVoluntary set-aside areas
0.17 km² overlap
2013405 Blårönningen
IUCN IaNature Reserve
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 017 distinct species · 203 878 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 Ljusnan : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 5 types (connectance 17.0%, filtre Serrano α=0.2). 11 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°
3,4°C
Annual rain
646mm
Moisture idx (CMI)
0,15
Runoff
256mm/an
PET
550mm
AET
431mm
Mean slope
5,5°
Water table
340cm
Forest
87%
Crops
0%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)