HydroBASINS lev08 watershed · #2080389100
Bassin de Drzewiczka
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 : Grójec, Końskie, Opoczno, Przysucha
Sub-basin area
1 067,1km²
Upstream area
1 067,2km²
Discharge
4,75m³/s
Mean elev.
210m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 477.7 km²44.6% of basin
- Końskie319.8 km²29.9% of basin
- Przysucha257.9 km²24.1% of basin
- Grójec15.7 km²1.5% of basin
9 intersecting protected areas
Lasy Przysusko – Szydłowieckie
IUCN Not AssignedProtected Landscape Area
109.25 km² overlap
Dolina rzeki Pilicy i Drzewiczki
IUCN Not AssignedProtected Landscape Area
102.13 km² overlap
Konecko-Łopuszniański
IUCN Not AssignedProtected Landscape Area
99.84 km² overlap
Dolina Pilicy
IUCN Not ReportedSpecial Protection Area (Birds Directive)
28.38 km² overlap
Dolina Dolnej Pilicy
IUCN Not ReportedSite of Community Importance (Habitats Directive)
16.22 km² overlap
Ostoja Pomorzany
IUCN Not ReportedSite of Community Importance (Habitats Directive)
9.07 km² overlap
Ostoja Brzeźnicka
IUCN Not ReportedSite of Community Importance (Habitats Directive)
8.13 km² overlap
Piliczański
IUCN Not AssignedProtected Landscape Area
0.51 km² overlap
Białaczów
IUCN IVNature Reserve
0.22 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 358 distinct species · 5 731 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Drzewiczka : 26 espèces reliées par 107 interactions GloBI sur 5 types (connectance 14.4%, filtre Serrano α=0.2). 13 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
581mm
Moisture idx (CMI)
-0,21
Runoff
143mm/an
PET
732mm
AET
493mm
Mean slope
1,1°
Water table
140cm
Forest
29%
Crops
39%
Urban
5%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)