HydroBASINS lev08 watershed · #2080429350
Bassin de Ryjak
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 : Brzozów, Rzeszów, Rzeszów (City), Strzyżów, Łańcut
Sub-basin area
268,3km²
Upstream area
268,4km²
Discharge
1,79m³/s
Mean elev.
309m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 245.1 km²91.0% of basin
- 12.2 km²4.5% of basin
- Łańcut10.6 km²3.9% of basin
- Brzozów1.3 km²0.5% of basin
- Strzyżów0.1 km²0.0% of basin
6 intersecting protected areas
Hyżnieńsko-Gwoźnicki Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
145.18 km² overlap
Nad Husowem
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.75 km² overlap
Wilcze
IUCN IVNature Reserve
3.16 km² overlap
Mójka
IUCN IVNature Reserve
2.78 km² overlap
Przemysko-Dynowski Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
1.38 km² overlap
Wisłok Środkowy z Dopływami
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 429 distinct species · 19 864 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 Ryjak : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 47 interactions GloBI sur 3 types (connectance 7.5%, filtre Serrano α=0.2). 7 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°
6,9°C
Annual rain
657mm
Moisture idx (CMI)
-0,10
Runoff
210mm/an
PET
733mm
AET
554mm
Mean slope
4,9°
Water table
373cm
Forest
21%
Crops
68%
Urban
9%
Protected
54%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)