Ontologia

HydroBASINS lev08 watershed · #1080711560

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 3 administrative regions : Boboye, Kollo, Say

Pfafstetter: 14271503

Sub-basin area

232,6km²

Upstream area

709 317,8km²

Discharge

766,86m³/s

Mean elev.

218m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger283 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

  • Kollo
    Tillabéry · Niger
    165.9 km²
    71.6% of basin
  • Say
    Tillabéry · Niger
    55.2 km²
    23.8% of basin
  • Boboye
    Dosso · Niger
    10.5 km²
    4.5% of basin

2 intersecting protected areas

  • Parc national du W

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    231.71 km² overlap

  • Dosso

    IUCN IV

    Partial Fauna Reserve

    144.40 km² overlap

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

Species present

6 distinct species · 8 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

8 obs · 4 cellules
Obs. / cellule
≥ 4
4–3
2–3
2–1
< 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°

28,9°C

Annual rain

612mm

Moisture idx (CMI)

-0,70

Runoff

79mm/an

PET

2 064mm

AET

515mm

Mean slope

0,7°

Water table

343cm

Forest

0%

Crops

37%

Urban

3%

Protected

100%

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