Ontologia

HydroBASINS lev08 watershed · #5080140720

Bassin de Sungai Samsam

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 2 administrative regions : Bengkalis, Siak

Pfafstetter: 51130668

Sub-basin area

327,9km²

Upstream area

327,9km²

Discharge

12,26m³/s

Mean elev.

31m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sungai Mandau230 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Balai Raja

    IUCN IV

    Wildlife Reserve

    128.75 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 distinct species · 2 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 obs · 2 cellules
Obs. / cellule
≥ 1
1–0
1–0
1–0
< 1

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydroclimate (BasinATLAS lev08)

Mean T°

26,9°C

Annual rain

2 892mm

Moisture idx (CMI)

0,41

Runoff

1 179mm/an

PET

1 720mm

AET

1 713mm

Mean slope

1,0°

Water table

25cm

Forest

8%

Crops

51%

Urban

2%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)