Ontologia

HydroBASINS lev08 watershed · #1080654650

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 : Ouallam, Tillabéry

2% lakePfafstetter: 14273400

Sub-basin area

2 286,9km²

Upstream area

2 286,9km²

Discharge

0,91m³/s

Mean elev.

273m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger921 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

  • Tillabéry
    Tillabéry · Niger
    1516.8 km²
    66.6% of basin
  • Ouallam
    Tillabéry · Niger
    761.7 km²
    33.4% of basin

1 intersecting protected areas

  • Kandadji

    IUCN IV

    Nature Reserve

    1174.16 km² overlap

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

Species present

12 distinct species · 56 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

56 obs · 9 cellules
Obs. / cellule
≥ 19
19–18
12–18
2–11
< 2

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°

29,3°C

Annual rain

326mm

Moisture idx (CMI)

-0,85

Runoff

12mm/an

PET

2 112mm

AET

272mm

Mean slope

0,8°

Water table

340cm

Forest

0%

Crops

4%

Urban

0%

Protected

0%

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