HydroBASINS lev08 watershed · #2080346140
Bassin de Drwęca
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 : Brodnica, Nowe Miasto
Sub-basin area
390,7km²
Upstream area
2 636,4km²
Discharge
17,38m³/s
Mean elev.
103m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Drwęca693 km²
- Bassin de Pissa346 km²
2 dept-equivalent regions (GADM L2)
- 247.0 km²63.0% of basin
- 145.4 km²37.0% of basin
19 intersecting protected areas
Landscape Park
134.61 km² overlap
Doliny Drwęcy
IUCN Not AssignedProtected Landscape Area
94.72 km² overlap
Skarliński
IUCN Not AssignedProtected Landscape Area
35.26 km² overlap
Ostoja Brodnicka
IUCN Not ReportedSite of Community Importance (Habitats Directive)
33.72 km² overlap
Bagienna Dolina Drwęcy
IUCN Not ReportedSpecial Protection Area (Birds Directive)
18.28 km² overlap
Dolina Drwęcy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
11.03 km² overlap
Dolina Kakaju
IUCN Not ReportedSite of Community Importance (Habitats Directive)
2.35 km² overlap
Dolina Dolnej Drwęcy
IUCN Not AssignedProtected Landscape Area
2.01 km² overlap
Rzeka Drwęca
IUCN IVNature Reserve
0.91 km² overlap
10 more protected areassorted by overlap area
Jar grądowy Cielęta
IUCN IVNature Reserve
0.71 km² overlap
Jezioro Mścin
IUCN Not AssignedNature Reserve
0.50 km² overlap
Retno
IUCN IVNature Reserve
0.33 km² overlap
Bachotek
IUCN IVNature Reserve
0.22 km² overlap
Mieliwo
IUCN IVNature Reserve
0.11 km² overlap
Okonek
IUCN IVNature Reserve
0.09 km² overlap
Żurawie Bagno
IUCN IVNature Reserve
0.06 km² overlap
Stręszek
IUCN IVNature Reserve
0.04 km² overlap
Bagno Mostki
IUCN IVNature Reserve
0.02 km² overlap
Nature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
864 distinct species · 6 758 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Drwęca : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 9 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°
7,4°C
Annual rain
587mm
Moisture idx (CMI)
-0,16
Runoff
195mm/an
PET
699mm
AET
495mm
Mean slope
1,8°
Water table
203cm
Forest
37%
Crops
41%
Urban
5%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)