HydroBASINS lev08 watershed · #2080379060
Bassin de Krzna Południowa
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 3 administrative regions : Biała Podlaska, Radzyń Podlaski, Łuków
Sub-basin area
263,2km²
Upstream area
263,2km²
Discharge
1,06m³/s
Mean elev.
160m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 178.8 km²67.7% of basin
- 66.1 km²25.0% of basin
- 19.3 km²7.3% of basin
8 intersecting protected areas
Łukowski Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
62.51 km² overlap
Lasy Łukowskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
59.90 km² overlap
Radzyński Obszar Chronionego Krajobrazu
IUCN Not AssignedProtected Landscape Area
30.96 km² overlap
Jata
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.89 km² overlap
Jata
IUCN IVNature Reserve
11.20 km² overlap
Kania
IUCN IVNature Reserve
0.29 km² overlap
Kra Jurajska
IUCN IVNature Reserve
0.08 km² overlap
Las Wagramski
IUCN IVNature Reserve
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
825 distinct species · 3 637 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Krzna Południowa : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 6 types (connectance 8.1%, filtre Serrano α=0.2). 6 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°
7,2°C
Annual rain
537mm
Moisture idx (CMI)
-0,27
Runoff
127mm/an
PET
733mm
AET
458mm
Mean slope
0,5°
Water table
79cm
Forest
21%
Crops
51%
Urban
9%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)