Ontologia

HydroBASINS lev08 watershed · #1080802530

Bassin de Niandan

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 : Kankan, Kouroussa

Pfafstetter: 14298420

Sub-basin area

841km²

Upstream area

841km²

Discharge

11,22m³/s

Mean elev.

428m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Niandan741 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Niger-Niandan-Milo

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    837.56 km² overlap

  • Koumban-Kourou

    IUCN Not Reported

    Classified Forest

    29.91 km² overlap

  • Lefarani

    IUCN Not Reported

    Classified Forest

    0.06 km² overlap

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

Species present

31 distinct species · 53 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

53 obs · 9 cellules
Obs. / cellule
≥ 27
27–26
3–26
2–2
< 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°

25,7°C

Annual rain

1 576mm

Moisture idx (CMI)

-0,27

Runoff

421mm/an

PET

2 149mm

AET

1 131mm

Mean slope

2,5°

Water table

147cm

Forest

35%

Crops

3%

Urban

0%

Protected

49%

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