HydroBASINS lev08 watershed · #2080340080
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 2 administrative regions : Chojnice, Tuchola
Sub-basin area
1 110,7km²
Upstream area
2 625,2km²
Discharge
21,43m³/s
Mean elev.
130m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Zbrzyca368 km²
- Bassin de Brda7 km²
2 dept-equivalent regions (GADM L2)
- 562.6 km²50.4% of basin
- Tuchola552.9 km²49.6% of basin
29 intersecting protected areas
Bory Tucholskie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
764.34 km² overlap
Landscape Park
341.63 km² overlap
Chojnicko-Tucholski
IUCN Not AssignedProtected Landscape Area
140.79 km² overlap
Landscape Park
97.04 km² overlap
Wielki Sandr Brdy
IUCN Not ReportedSpecial Protection Area (Birds Directive)
95.52 km² overlap
Śliwicki
IUCN Not AssignedProtected Landscape Area
57.09 km² overlap
Landscape Park
50.29 km² overlap
Doliny Brdy i Stążki w Borach Tucholskich
IUCN Not ReportedSite of Community Importance (Habitats Directive)
39.46 km² overlap
Sandr Brdy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
39.45 km² overlap
20 more protected areassorted by overlap area
Park Narodowy Bory Tucholskie
IUCN Not AssignedNational Park
24.22 km² overlap
Dolina Rzeki Brdy
IUCN IVNature Reserve
16.86 km² overlap
Mętne
IUCN Not ReportedSite of Community Importance (Habitats Directive)
5.24 km² overlap
Bagna nad Stążką
IUCN IVNature Reserve
4.79 km² overlap
Zalewu Koronowskiego
IUCN Not AssignedProtected Landscape Area
3.01 km² overlap
Źródła Rzeki Stążki
IUCN IVNature Reserve
2.51 km² overlap
Mętne
IUCN IVNature Reserve
1.02 km² overlap
Bagno Stawek
IUCN IVNature Reserve
0.42 km² overlap
Moczadło
IUCN Not AssignedNature Reserve
0.26 km² overlap
Torfowisko Mikołajskie
IUCN Not AssignedNature Reserve
0.19 km² overlap
Cisy nad Czerską Strugą
IUCN IVNature Reserve
0.17 km² overlap
Jezioro Zdręczno
IUCN IVNature Reserve
0.15 km² overlap
Jezioro Długie
IUCN Not AssignedNature Reserve
0.13 km² overlap
Jezioro Żabionek
IUCN Not AssignedNature Reserve
0.13 km² overlap
Jeziorka Kozie
IUCN IVNature Reserve
0.12 km² overlap
Ustronie
IUCN IVNature Reserve
0.11 km² overlap
Nawionek
IUCN IVNature Reserve
0.10 km² overlap
Jezioro Sosnówek
IUCN Not AssignedNature Reserve
0.09 km² overlap
Torfowisko Rytki
IUCN Not AssignedNature Reserve
0.07 km² overlap
Bagno Grzybna
IUCN IVNature Reserve
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 276 distinct species · 22 214 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 : 25 espèces reliées par 65 interactions GloBI sur 5 types (connectance 16.0%, 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°
7,0°C
Annual rain
605mm
Moisture idx (CMI)
-0,09
Runoff
218mm/an
PET
667mm
AET
492mm
Mean slope
1,2°
Water table
96cm
Forest
56%
Crops
28%
Urban
2%
Protected
63%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)