Ontologia

HydroBASINS lev08 watershed · #1080596910

Bassin du Niger

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 : Ansongo, Gao

Pfafstetter: 14275071

Sub-basin area

450,2km²

Upstream area

524 750,4km²

Discharge

807,08m³/s

Mean elev.

275m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger36 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

  • Ansongo
    Gao · Mali
    380.0 km²
    84.7% of basin
  • Gao
    Gao · Mali
    68.6 km²
    15.3% of basin

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

Species present

8 distinct species · 18 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 obs · 5 cellules
Obs. / cellule
≥ 10
10–9
5–9
1–4
< 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°

28,9°C

Annual rain

255mm

Moisture idx (CMI)

-0,88

Runoff

138mm/an

PET

2 077mm

AET

212mm

Mean slope

0,6°

Water table

224cm

Forest

0%

Crops

6%

Urban

0%

Protected

0%

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