HydroBASINS lev08 watershed · #2080332670
Bassin de Brda
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 : Bytów, Chojnice, Człuchów
Sub-basin area
872,8km²
Upstream area
872,9km²
Discharge
7,11m³/s
Mean elev.
155m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 660.2 km²75.3% of basin
- 177.6 km²20.3% of basin
- 38.7 km²4.4% of basin
29 intersecting protected areas
Okolice Jezior Krępsko i Szczytno
IUCN Not AssignedProtected Landscape Area
126.94 km² overlap
Nowa Brda
IUCN Not ReportedSite of Community Importance (Habitats Directive)
83.48 km² overlap
Wielki Sandr Brdy
IUCN Not ReportedSpecial Protection Area (Birds Directive)
78.41 km² overlap
Landscape Park
70.48 km² overlap
Źródliskowy Obszar Brdy i Wieprzy na Wschód od Miastka
IUCN Not AssignedProtected Landscape Area
37.95 km² overlap
Fragment Borów Tucholskich
IUCN Not AssignedProtected Landscape Area
30.45 km² overlap
Sandr Brdy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
22.19 km² overlap
Park Narodowy Bory Tucholskie
IUCN Not AssignedNational Park
21.74 km² overlap
Bory Tucholskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
20.48 km² overlap
20 more protected areassorted by overlap area
Czerwona Woda pod Babilonem
IUCN Not ReportedSite of Community Importance (Habitats Directive)
8.22 km² overlap
Doliny Brdy i Chociny
IUCN Not ReportedSite of Community Importance (Habitats Directive)
4.56 km² overlap
Las Wolność
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.17 km² overlap
Białe Torfowisko
IUCN Not AssignedNature Reserve
1.75 km² overlap
Miasteckie Jeziora Lobeliowe
IUCN Not ReportedSite of Community Importance (Habitats Directive)
1.42 km² overlap
Jezioro Dymno
IUCN Not ReportedSite of Community Importance (Habitats Directive)
1.15 km² overlap
Jezioro Krasne
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.98 km² overlap
Dolina Wieprzy i Studnicy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.95 km² overlap
Bagnisko Niedźwiady
IUCN IVNature Reserve
0.57 km² overlap
Jezioro Piasek
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.55 km² overlap
Jezioro Krasne
IUCN IVNature Reserve
0.43 km² overlap
Jezioro Małe Łowne
IUCN IVNature Reserve
0.38 km² overlap
Duży Okoń
IUCN Not ReportedSite of Community Importance (Habitats Directive)
0.22 km² overlap
Osiedle Kormoranów
IUCN IVNature Reserve
0.20 km² overlap
Przytoń
IUCN IVNature Reserve
0.20 km² overlap
Jezioro Sporackie
IUCN IVNature Reserve
0.18 km² overlap
Jezioro Bardze Małe
IUCN IVNature Reserve
0.08 km² overlap
Jezioro Cęgi Małe
IUCN IVNature Reserve
0.07 km² overlap
Sosny
IUCN IVNature Reserve
0.02 km² overlap
Jezioro Orle
IUCN IVNature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 756 distinct species · 9 104 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Brda : 31 espèces reliées par 71 interactions GloBI sur 6 types (connectance 10.1%, 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°
7,1°C
Annual rain
646mm
Moisture idx (CMI)
-0,02
Runoff
269mm/an
PET
661mm
AET
500mm
Mean slope
1,4°
Water table
114cm
Forest
56%
Crops
23%
Urban
3%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)