HydroBASINS lev08 watershed · #2080355060
Bassin de Drawa
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 2 administrative regions : Czarnków-Trzcianka, Strzelce-Drezdenko
Sub-basin area
96,6km²
Upstream area
3 289,5km²
Discharge
21,78m³/s
Mean elev.
66m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Koczynka637 km²
- Bassin de Drawa4 km²
2 dept-equivalent regions (GADM L2)
- 77.8 km²80.2% of basin
- 19.2 km²19.8% of basin
5 intersecting protected areas
Lasy Puszczy nad Drawą
IUCN Not ReportedSpecial Protection Area (Birds Directive)
95.15 km² overlap
Uroczyska Puszczy Drawskiej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
82.62 km² overlap
Puszcza Drawska
IUCN Not AssignedProtected Landscape Area
77.64 km² overlap
Puszcza nad Drawą (woj. wielkopolskie)
IUCN Not AssignedProtected Landscape Area
15.71 km² overlap
Jezioro Łubówko
IUCN IVNature Reserve
0.79 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
252 distinct species · 481 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Drawa : 34 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 126 interactions GloBI sur 5 types (connectance 14.0%, filtre Serrano α=0.2). 9 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°
8,4°C
Annual rain
569mm
Moisture idx (CMI)
-0,21
Runoff
143mm/an
PET
716mm
AET
482mm
Mean slope
1,9°
Water table
221cm
Forest
79%
Crops
11%
Urban
1%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)