HydroBASINS lev08 watershed · #2080027320
Bassin de Hapaka grāvis
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 1 administrative regions : Riga
Sub-basin area
21,5km²
Upstream area
85 612,9km²
Discharge
754,27m³/s
Mean elev.
4m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Mazā Jugla1676 km²
- Bassin de Daugava613 km²
1 intersecting protected areas
Buļļu kāpas
IUCN IIINature Monument
0.95 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
202 distinct species · 393 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Hapaka grāvis : 39 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 3 types (connectance 6.1%, 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°
6,3°C
Annual rain
650mm
Moisture idx (CMI)
0,15
Runoff
320mm/an
PET
553mm
AET
448mm
Mean slope
0,7°
Water table
32cm
Forest
23%
Crops
9%
Urban
29%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)