HydroBASINS lev08 watershed · #1081166770
Bassin de Gucha
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 : Awendo, Bobasi, Bomachoge Borabu, Bomachoge Chache, Bonchari +16
Sub-basin area
3 107,9km²
Upstream area
3 108,1km²
Discharge
27,54m³/s
Mean elev.
1 586m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
21 dept-equivalent regions (GADM L2)
- 567.3 km²18.3% of basin
- 363.6 km²11.8% of basin
- 260.3 km²8.4% of basin
- 255.6 km²8.3% of basin
- 238.3 km²7.7% of basin
- 228.1 km²7.4% of basin
- 214.0 km²6.9% of basin
- 207.8 km²6.7% of basin
13 moreFull L2 list
- Nyaribari Chache136.0 km² · 4.4%
- Bomachoge Borabu114.5 km² · 3.7%
- Bomachoge Chache102.0 km² · 3.3%
- Bonchari86.2 km² · 2.8%
- Nyatike82.9 km² · 2.7%
- Nyaribari Masaba80.9 km² · 2.6%
- West Mugirango67.3 km² · 2.2%
- Suna East27.5 km² · 0.9%
- Homa Bay Town23.4 km² · 0.8%
- Borabu22.8 km² · 0.7%
- Kitutu Chache South7.8 km² · 0.3%
- Rangwe7.8 km² · 0.3%
- North Mugirango0.0 km² · 0.0%
2 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 323 distinct species · 8 544 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Gucha : 29 espèces reliées par 48 interactions GloBI sur 4 types (connectance 7.2%, filtre Serrano α=0.2). 8 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°
19,9°C
Annual rain
1 555mm
Moisture idx (CMI)
-0,12
Runoff
290mm/an
PET
1 765mm
AET
1 301mm
Mean slope
4,3°
Water table
230cm
Forest
4%
Crops
24%
Urban
45%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)