Ontologia

HydroBASINS lev08 watershed · #1080745060

Bassin de Ngadda

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 4 administrative regions : Damboa, Jere, Konduga, Maiduguri

EndorheicPfafstetter: 16220670

Sub-basin area

1 554,8km²

Upstream area

4 196,6km²

Discharge

10,31m³/s

Mean elev.

354m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Ngadda16 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

6 intersecting protected areas

  • Yerwa

    IUCN Not Reported

    Forest Reserve

    72.62 km² overlap

  • Gombole

    IUCN Not Reported

    Forest Reserve

    47.66 km² overlap

  • Komala

    IUCN Not Reported

    Forest Reserve

    19.32 km² overlap

  • Molai

    IUCN Not Reported

    Forest Reserve

    12.20 km² overlap

  • Lake Alo

    IUCN Not Reported

    Forest Reserve

    1.77 km² overlap

  • Forest Reserve Name Unknown (NGA) No.23

    IUCN Not Reported

    Forest Reserve

    0.03 km² overlap

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

Species present

184 distinct species · 1 125 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 125 obs · 11 cellules
Obs. / cellule
≥ 748
144–747
39–143
13–38
< 13

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 29 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 de Ngadda : 21 espèces reliées par 39 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
39
Connectance
0.079
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°

25,8°C

Annual rain

709mm

Moisture idx (CMI)

-0,65

Runoff

71mm/an

PET

2 002mm

AET

598mm

Mean slope

0,0°

Water table

6cm

Forest

0%

Crops

8%

Urban

1%

Protected

10%

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