Ontologia

HydroBASINS lev08 watershed · #1080716960

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: 14271501

Sub-basin area

282,5km²

Upstream area

709 787,9km²

Discharge

767,79m³/s

Mean elev.

217m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Niger774 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

  • Say
    Tillabéry · Niger
    148.8 km²
    52.9% of basin
  • Kollo
    Tillabéry · Niger
    131.4 km²
    46.7% of basin
  • Boboye
    Dosso · Niger
    1.2 km²
    0.4% of basin

3 intersecting protected areas

  • Parc national du W

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    281.41 km² overlap

  • Dosso

    IUCN IV

    Partial Fauna Reserve

    157.73 km² overlap

  • Tamou

    IUCN IV

    Game Reserve

    21.53 km² overlap

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

Species present

8 distinct species · 10 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 obs · 4 cellules
Obs. / cellule
≥ 5
5–4
2–4
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

Sample of 4 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.

ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin du Niger : 4 espèces reliées par 2 interactions GloBI sur 1 type (connectance 33.3%, filtre Serrano α=0.2).

Espèces affichées
4
Interactions affichées
2
Connectance
0.333
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

28,9°C

Annual rain

629mm

Moisture idx (CMI)

-0,69

Runoff

76mm/an

PET

2 059mm

AET

530mm

Mean slope

0,8°

Water table

312cm

Forest

0%

Crops

29%

Urban

2%

Protected

100%

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