HydroBASINS lev08 watershed · #2080374700
Bassin de Ochnia
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 4 administrative regions : Koło, Kutno, Włocławek, Łęczyca
Sub-basin area
756,1km²
Upstream area
756,1km²
Discharge
3,54m³/s
Mean elev.
114m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 540.8 km²71.3% of basin
- 169.5 km²22.3% of basin
- 34.9 km²4.6% of basin
- Koło13.8 km²1.8% of basin
8 intersecting protected areas
Pradoliny Warszawsko-Berlińskiej
IUCN Not AssignedProtected Landscape Area
59.70 km² overlap
Pradolina Warszawsko-Berlińska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
55.80 km² overlap
Pradolina Bzury-Neru
IUCN Not ReportedSite of Community Importance (Habitats Directive)
55.26 km² overlap
Dąbrowa Świetlista w Pernie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.40 km² overlap
Dąbrowa Świetlista
IUCN IVNature Reserve
0.40 km² overlap
Ostrowy-Bażantarnia
IUCN IVNature Reserve
0.28 km² overlap
Perna
IUCN IVNature Reserve
0.16 km² overlap
Ostrowy
IUCN IVNature Reserve
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 094 distinct species · 24 645 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Ochnia : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 6 types (connectance 17.7%, filtre Serrano α=0.2). 12 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°
8,2°C
Annual rain
533mm
Moisture idx (CMI)
-0,29
Runoff
148mm/an
PET
754mm
AET
455mm
Mean slope
0,5°
Water table
48cm
Forest
1%
Crops
71%
Urban
5%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)