Ontologia

HydroBASINS lev08 watershed · #1080770800

Bassin de Onson

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 : Gaoual, Télimélé

Pfafstetter: 14578068

Sub-basin area

389,3km²

Upstream area

389,3km²

Discharge

11,31m³/s

Mean elev.

369m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tominé240 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Paradji

    IUCN Not Reported

    Classified Forest

    6.39 km² overlap

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

Species present

4 distinct species · 9 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 obs · 4 cellules
Obs. / cellule
≥ 6
6–5
1–5
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°

26,1°C

Annual rain

2 201mm

Moisture idx (CMI)

0,14

Runoff

941mm/an

PET

1 900mm

AET

1 097mm

Mean slope

7,4°

Water table

341cm

Forest

31%

Crops

5%

Urban

0%

Protected

2%

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