HydroBASINS lev08 watershed · #2080033080
Bassin de Nissan
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 : Falkenberg, Gislaved, Gnosjö, Halmstad, Hylte +6
Sub-basin area
2 588,5km²
Upstream area
2 588,5km²
Discharge
47,33m³/s
Mean elev.
183m
Administrative coverage
11 dept-equivalent regions (GADM L2)
- 930.3 km²35.8% of basin
- 728.8 km²28.0% of basin
- 319.8 km²12.3% of basin
- 210.5 km²8.1% of basin
- 191.3 km²7.4% of basin
- 175.2 km²6.7% of basin
- 38.2 km²1.5% of basin
- 4.8 km²0.2% of basin
3 moreFull L2 list
- Ulricehamn1.7 km² · 0.1%
- Svenljunga0.9 km² · 0.0%
- Värnamo0.1 km² · 0.0%
30 intersecting protected areas
Nature Reserve
19.37 km² overlap
Komosse
IUCN IbWetland of International Importance (Ramsar Site)
18.25 km² overlap
Anderstorp, Store mosse
IUCN IbNatura 2000 SPA
17.81 km² overlap
Anderstorp, Store mosse
IUCN IbNatura 2000 SCI
17.81 km² overlap
Anderstorp, Store mosse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
17.81 km² overlap
Anderstorp, Store mosse
IUCN Not ReportedSpecial Protection Area (Birds Directive)
17.81 km² overlap
Komosse (västra)
IUCN IbNatura 2000 SPA
9.18 km² overlap
Komosse (västra)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.18 km² overlap
Komosse (västra)
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.18 km² overlap
21 more protected areassorted by overlap area
Komosse (västra)
IUCN IbNatura 2000 SCI
9.18 km² overlap
Komosse
IUCN IbNatura 2000 SPA
9.07 km² overlap
Komosse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.07 km² overlap
Komosse
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.07 km² overlap
Komosse
IUCN IbNatura 2000 SCI
9.07 km² overlap
2000549 Komosse södra
IUCN IbNature Reserve
8.56 km² overlap
2001431 Komosse
IUCN IbNature Reserve
5.65 km² overlap
Kättesjö mossar
IUCN Not AssignedNatura 2000 SCI
4.38 km² overlap
Kättesjö mossar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.38 km² overlap
2002187 Komosse södra
IUCN IbNature Reserve
3.48 km² overlap
Gagnaryds mosse
IUCN Not AssignedNatura 2000 SPA
2.51 km² overlap
Gagnaryds mosse
IUCN Not AssignedNatura 2000 SCI
2.51 km² overlap
Gagnaryds mosse
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.51 km² overlap
Gagnaryds mosse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.51 km² overlap
2044881 Yamossen
IUCN IVNature Reserve
1.84 km² overlap
2002321 Isaberg
IUCN Not AssignedNature Reserve
1.49 km² overlap
Store mosse-Färgån
IUCN Not AssignedNatura 2000 SCI
1.45 km² overlap
Store mosse-Färgån
IUCN Not AssignedNatura 2000 SPA
1.45 km² overlap
Store mosse-Färgån
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.45 km² overlap
Store mosse-Färgån
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.45 km² overlap
2002589 Villstad kyrkby
IUCN IVNature Conservation Area
1.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 709 distinct species · 717 318 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Nissan : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, 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°
6,2°C
Annual rain
840mm
Moisture idx (CMI)
0,30
Runoff
536mm/an
PET
579mm
AET
480mm
Mean slope
2,1°
Water table
190cm
Forest
91%
Crops
4%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)