HydroBASINS lev08 watershed · #2080546930
Bassin de Una / Уна
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 6 administrative regions across 2 countries : Banja Luka, Donji Kukuruzari, Dvor, Hrvatska Dubica, Hrvatska Kostajnica +1
Sub-basin area
405,3km²
Upstream area
5 985km²
Discharge
103,89m³/s
Mean elev.
227m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Žirovnica370 km²
- Bassin de Žirovnica1 km²
6 dept-equivalent regions (GADM L2)
- Banja Luka293.8 km²72.3% of basin
- 68.7 km²16.9% of basin
- 23.8 km²5.9% of basin
- 18.5 km²4.5% of basin
- 1.2 km²0.3% of basin
- 0.3 km²0.1% of basin
5 intersecting protected areas
Zrinska gora
IUCN Not ReportedSite of Community Importance (Habitats Directive)
28.70 km² overlap
Dolina Une
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.93 km² overlap
Una
IUCN VNature park V.3 (RS law)
15.46 km² overlap
Područje oko Hrvatske Kostajnice
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.20 km² overlap
Brdo Djed
IUCN Not ReportedForest Park
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
214 distinct species · 415 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Una / Уна : 28 espèces reliées par 51 interactions GloBI sur 3 types (connectance 9.7%, filtre Serrano α=0.2). 5 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°
10,4°C
Annual rain
990mm
Moisture idx (CMI)
0,06
Runoff
392mm/an
PET
929mm
AET
725mm
Mean slope
7,2°
Water table
348cm
Forest
54%
Crops
10%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)