HydroBASINS lev08 watershed · #2080351700
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
40,6km²
Upstream area
2 310,5km²
Discharge
16,98m³/s
Mean elev.
73m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Płociczna321 km²
- Bassin de Drawa64 km²
2 dept-equivalent regions (GADM L2)
- 37.5 km²92.1% of basin
- 3.2 km²7.9% of basin
5 intersecting protected areas
Lasy Puszczy nad Drawą
IUCN Not ReportedSpecial Protection Area (Birds Directive)
40.72 km² overlap
Uroczyska Puszczy Drawskiej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
33.99 km² overlap
Puszcza Drawska
IUCN Not AssignedProtected Landscape Area
33.62 km² overlap
Drawieński Park Narodowy
IUCN IINational Park
4.72 km² overlap
Puszcza nad Drawą (woj. wielkopolskie)
IUCN Not AssignedProtected Landscape Area
3.20 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
112 distinct species · 171 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 : 30 espèces reliées par 48 interactions GloBI sur 2 types (connectance 7.2%, 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°
8,2°C
Annual rain
578mm
Moisture idx (CMI)
-0,19
Runoff
155mm/an
PET
709mm
AET
488mm
Mean slope
1,7°
Water table
150cm
Forest
87%
Crops
5%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)