HydroBASINS lev08 watershed · #1080842970
Bassin de River Bolleri
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 5 administrative regions : Balanga, Kaltungo, Karim Lamido, Lamurde, Shomgom
Sub-basin area
1 408,4km²
Upstream area
1 408,8km²
Discharge
6,13m³/s
Mean elev.
387m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 509.4 km²36.3% of basin
- 372.7 km²26.6% of basin
- 346.8 km²24.7% of basin
- 107.5 km²7.7% of basin
- 66.2 km²4.7% of basin
1 intersecting protected areas
Kaltungo Hill
IUCN Not ReportedForest Reserve
8.46 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
195 distinct species · 1 319 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de River Bolleri : 19 espèces reliées par 19 interactions GloBI sur 3 types (connectance 7.5%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
26,2°C
Annual rain
957mm
Moisture idx (CMI)
-0,50
Runoff
139mm/an
PET
1 927mm
AET
801mm
Mean slope
5,6°
Water table
321cm
Forest
0%
Crops
27%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)