Ontologia

HydroBASINS lev08 watershed · #1080620580

Bassin · #1080620580

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 3 administrative regions across 2 countries : Ansongo, Ouallam, Tillabéry

Pfafstetter: 14273830

Sub-basin area

591,1km²

Upstream area

11 309,3km²

Discharge

7,3m³/s

Mean elev.

272m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger1126 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

  • Tillabéry
    Tillabéry · Niger
    564.0 km²
    95.8% of basin
  • Ansongo
    Gao · Mali
    24.9 km²
    4.2% of basin
  • Ouallam
    Tillabéry · Niger
    0.1 km²
    0.0% of basin

1 intersecting protected areas

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

Species present

34 distinct species · 41 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

41 obs · 3 cellules
Obs. / cellule
≥ 25
25–24
25–24
10–24
< 10

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°

29,2°C

Annual rain

235mm

Moisture idx (CMI)

-0,89

Runoff

14mm/an

PET

2 110mm

AET

195mm

Mean slope

0,5°

Water table

167cm

Forest

0%

Crops

6%

Urban

0%

Protected

2%

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