HydroBASINS lev08 watershed · #2080235650
Bassin de Simoa
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 : Flesberg, Flå, Krødsherad, Modum, Nore og Uvdal +2
Sub-basin area
890,6km²
Upstream area
890,6km²
Discharge
14,27m³/s
Mean elev.
541m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- 770.7 km²86.1% of basin
- 50.7 km²5.7% of basin
- 27.6 km²3.1% of basin
- 16.7 km²1.9% of basin
- 11.9 km²1.3% of basin
- 9.2 km²1.0% of basin
- 8.7 km²1.0% of basin
9 intersecting protected areas
Trillemarka-Rollagsfjell
IUCN IaNature Reserve
95.30 km² overlap
Trillemarka
IUCN Not ReportedEmerald Network
87.32 km² overlap
Juvsåsen
IUCN IaNature Reserve
2.06 km² overlap
Halvfaråsen
IUCN IaNature Reserve
1.58 km² overlap
Flenten
IUCN IaNature Reserve
0.69 km² overlap
Presttjennmarka
IUCN IaNature Reserve
0.69 km² overlap
Solevatn
IUCN Not ReportedEmerald Network
0.54 km² overlap
Solevatn
IUCN IaNature Reserve
0.52 km² overlap
Lunnane
IUCN IaNature Reserve
0.21 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 812 distinct species · 62 346 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Simoa : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 6 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°
2,4°C
Annual rain
759mm
Moisture idx (CMI)
0,30
Runoff
511mm/an
PET
528mm
AET
443mm
Mean slope
9,6°
Water table
368cm
Forest
86%
Crops
0%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)