HydroBASINS lev08 watershed · #2080337190
Bassin de Gwda
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 : Człuchów, Koszalin, Szczecinek, Złotów
Sub-basin area
519,3km²
Upstream area
519,5km²
Discharge
3,75m³/s
Mean elev.
150m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Szczecinek482.8 km²92.6% of basin
- Złotów20.5 km²3.9% of basin
- 17.0 km²3.3% of basin
- 1.3 km²0.2% of basin
11 intersecting protected areas
Jeziora Szczecineckie
IUCN Not AssignedProtected Landscape Area
162.00 km² overlap
Jeziora Szczecineckie
IUCN Not ReportedSite of Community Importance (Habitats Directive)
30.21 km² overlap
Pojezierze Drawskie
IUCN Not AssignedProtected Landscape Area
22.80 km² overlap
Bobolickie Jeziora Lobeliowe
IUCN Not ReportedSite of Community Importance (Habitats Directive)
14.94 km² overlap
Okolice Żydowo-Biały Bór
IUCN Not AssignedProtected Landscape Area
6.88 km² overlap
Las Drzonowski
IUCN Not AssignedProtected Landscape Area
4.62 km² overlap
Pojezierze Wałeckie i Dolina Gwdy (woj. wielkopolskie)
IUCN Not AssignedProtected Landscape Area
2.87 km² overlap
Ostoja Drawska
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.57 km² overlap
Jezioro Kiełpino
IUCN IVNature Reserve
0.48 km² overlap
2 more protected areassorted by overlap area
Dęby Wilczkowskie
IUCN IVNature Reserve
0.03 km² overlap
Dolina Gwdy
IUCN IVNature Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
961 distinct species · 5 855 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Gwda : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 94 interactions GloBI sur 5 types (connectance 19.0%, 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
647mm
Moisture idx (CMI)
-0,02
Runoff
238mm/an
PET
662mm
AET
502mm
Mean slope
1,1°
Water table
65cm
Forest
38%
Crops
30%
Urban
4%
Protected
38%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)