HydroBASINS lev08 watershed · #2080350860
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 3 administrative regions : Choszczno, Strzelce-Drezdenko, Wałcz
Sub-basin area
63,6km²
Upstream area
1 949km²
Discharge
15,23m³/s
Mean elev.
86m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Drawa1659 km²
- Bassin de Korytnica227 km²
3 dept-equivalent regions (GADM L2)
- 40.2 km²63.0% of basin
- Choszczno22.3 km²34.9% of basin
- Wałcz1.3 km²2.1% of basin
7 intersecting protected areas
Uroczyska Puszczy Drawskiej
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
63.85 km² overlap
Lasy Puszczy nad Drawą
IUCN Not ReportedSpecial Protection Area (Birds Directive)
63.85 km² overlap
Drawieński Park Narodowy
IUCN IINational Park
38.25 km² overlap
E (Korytnica Rzeka)
IUCN Not AssignedProtected Landscape Area
9.38 km² overlap
Puszcza Drawska
IUCN Not AssignedProtected Landscape Area
4.67 km² overlap
Puszcza nad Drawą (woj. zachodniopomorskie)
IUCN Not AssignedProtected Landscape Area
1.34 km² overlap
F (Bierzwnik)
IUCN Not AssignedProtected Landscape Area
0.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
789 distinct species · 3 620 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 : 24 espèces reliées par 22 interactions GloBI sur 6 types (connectance 5.8%, filtre Serrano α=0.2). 4 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°
8,1°C
Annual rain
586mm
Moisture idx (CMI)
-0,17
Runoff
165mm/an
PET
704mm
AET
493mm
Mean slope
1,6°
Water table
114cm
Forest
81%
Crops
2%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)