Ontologia

HydroBASINS lev08 watershed · #1080968050

Bassin de River Dawn

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 21 administrative regions : Aguata, Anambra East, Anambra West, Anaocha, Awgu +16

Pfafstetter: 14210022

Sub-basin area

4 089,9km²

Upstream area

4 089,9km²

Discharge

144,92m³/s

Mean elev.

173m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Anambra331 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

21 dept-equivalent regions (GADM L2)

13 more

14 intersecting protected areas

  • Ohaodo-Mbanasa

    IUCN Not Reported

    Forest Reserve

    571.67 km² overlap

  • Mamu River

    IUCN Not Reported

    Forest Reserve

    52.49 km² overlap

  • Umuabi

    IUCN Not Reported

    Forest Reserve

    10.90 km² overlap

  • Aguobu Owa

    IUCN Not Reported

    Forest Reserve

    7.23 km² overlap

  • Awlaw-Isikwe

    IUCN Not Reported

    Forest Reserve

    5.10 km² overlap

  • Irite Amoli

    IUCN Not Reported

    Forest Reserve

    4.19 km² overlap

  • Nkachu-Ituku

    IUCN Not Reported

    Forest Reserve

    3.93 km² overlap

  • Isiamaigbo

    IUCN Not Reported

    Forest Reserve

    3.57 km² overlap

  • Aguara

    IUCN Not Reported

    Forest Reserve

    3.49 km² overlap

5 more protected areas

  • Oji River

    IUCN Not Reported

    Forest Reserve

    3.06 km² overlap

  • Akpugo

    IUCN Not Reported

    Forest Reserve

    2.24 km² overlap

  • Umude Ugbenu

    IUCN Not Reported

    Forest Reserve

    1.79 km² overlap

  • Achalla

    IUCN Not Reported

    Forest Reserve

    1.46 km² overlap

  • Enugu

    IUCN Not Reported

    Forest Reserve

    0.36 km² overlap

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

Species present

614 distinct species · 2 957 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 957 obs · 84 cellules
Obs. / cellule
≥ 212
87–211
56–86
19–55
< 19

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

Ecological tissue

Sample of 36 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 River Dawn : 32 espèces reliées par 34 interactions GloBI sur 3 types (connectance 5.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
34
Connectance
0.051
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°

26,5°C

Annual rain

1 765mm

Moisture idx (CMI)

0,08

Runoff

1 117mm/an

PET

1 616mm

AET

1 130mm

Mean slope

2,7°

Water table

134cm

Forest

31%

Crops

79%

Urban

18%

Protected

16%

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