HydroBASINS lev08 watershed · #2080036110
Bassin de Surna
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 7 administrative regions : Hemne, Meldal, Oppdal, Orkdal, Rennebu +2
Sub-basin area
1 307,8km²
Upstream area
1 307,8km²
Discharge
56,55m³/s
Mean elev.
643m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 566.2 km²43.0% of basin
- 529.2 km²40.2% of basin
- 104.9 km²8.0% of basin
- 58.2 km²4.4% of basin
- 39.3 km²3.0% of basin
- 15.8 km²1.2% of basin
- 2.4 km²0.2% of basin
15 intersecting protected areas
Trollheimen
IUCN Not ReportedEmerald Network
597.57 km² overlap
Trollheimen
IUCN VProtected Landscape
584.66 km² overlap
Svartåmoen
IUCN IaNature Reserve
12.84 km² overlap
Storslettkjølen
IUCN IaNature Reserve
2.05 km² overlap
Tågdalen
IUCN Not ReportedEmerald Network
1.46 km² overlap
Tågdalen
IUCN IaNature Reserve
1.46 km² overlap
Lomundsjøen og Lomundsjømyra
IUCN Not ReportedEmerald Network
1.09 km² overlap
Lomundsjøen
IUCN IaNature Reserve
1.00 km² overlap
Surna
IUCN Not ReportedEmerald Network
0.37 km² overlap
6 more protected areassorted by overlap area
Surna
IUCN IaNature Reserve
0.36 km² overlap
Svorkalia
IUCN IaNature Reserve
0.22 km² overlap
Skjoralia
IUCN IaNature Reserve
0.14 km² overlap
Lomundsjømyra
IUCN IaNature Reserve
0.10 km² overlap
Høgkjølen/Bakkjølen
IUCN IaNature Reserve
0.03 km² overlap
Vasshaugen
IUCN Not ReportedNatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 426 distinct species · 144 964 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Surna : 23 espèces reliées par 70 interactions GloBI sur 5 types (connectance 14.1%, filtre Serrano α=0.2). 9 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°
1,9°C
Annual rain
1 086mm
Moisture idx (CMI)
0,60
Runoff
1 144mm/an
PET
428mm
AET
404mm
Mean slope
11,9°
Water table
447cm
Forest
46%
Crops
0%
Urban
0%
Protected
46%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)