HydroBASINS lev08 watershed · #2080417510

Bassin de Tanew

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 8 administrative regions : Biłgoraj, Janów Lubelski, Leżajsk, Lubaczów, Nisko +3

Pfafstetter: 24244706

Sub-basin area

2 341,8km²

Upstream area

2 341,9km²

Discharge

10,67m³/s

Mean elev.

234m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Stróżanka36 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

8 dept-equivalent regions (GADM L2)

Biłgoraj
Lubelskie · Poland
1264.4 km²
53.8% of basin
Lubaczów
Podkarpackie · Poland
530.3 km²
22.6% of basin
Nisko
Podkarpackie · Poland
230.1 km²
9.8% of basin
Tomaszów Lubelski
Lubelskie · Poland
208.4 km²
8.9% of basin
Janów Lubelski
Lubelskie · Poland
62.1 km²
2.6% of basin
Zamość
Lubelskie · Poland
35.2 km²
1.5% of basin
Przeworsk
Podkarpackie · Poland
16.4 km²
0.7% of basin
Leżajsk
Podkarpackie · Poland
3.2 km²
0.1% of basin

30 intersecting protected areas

Puszcza Solska
IUCN Not Reported
Special Protection Area (Birds Directive)
734.00 km² overlap
Roztocze
IUCN Not Reported
Special Protection Area (Birds Directive)
351.04 km² overlap
Uroczyska Puszczy Solskiej
IUCN Not Reported
Site of Community Importance (Habitats Directive)
316.64 km² overlap
Park Krajobrazowy Puszczy Solskiej
IUCN V
Landscape Park
293.90 km² overlap
Roztoczański Obszar Chronionego Krajobrazu (woj. podkarpackie)
IUCN Not Assigned
Protected Landscape Area
225.25 km² overlap
Dolina Dolnej Tanwi
IUCN Not Reported
Site of Community Importance (Habitats Directive)
85.09 km² overlap
Południoworoztoczański Park Krajobrazowy
IUCN V
Landscape Park
60.94 km² overlap
Roztoczański (woj.lubelskie)
IUCN Not Assigned
Protected Landscape Area
59.54 km² overlap
Horyniec
IUCN Not Reported
Site of Community Importance (Habitats Directive)
26.05 km² overlap

21 more protected areassorted by overlap area

Krasnobrodzki Park Krajobrazowy
IUCN V
Landscape Park
25.72 km² overlap
Sieniawski Obszar Chronionego Krajobrazu
IUCN Not Assigned
Protected Landscape Area
21.87 km² overlap
Roztoczański Park Narodowy
IUCN II
National Park
11.02 km² overlap
Roztocze Środkowe
IUCN Not Reported
Site of Community Importance (Habitats Directive)
11.00 km² overlap
Lasy Sieniawskie
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
4.89 km² overlap
Uroczyska Roztocza Wschodniego
IUCN Not Reported
Site of Community Importance (Habitats Directive)
3.93 km² overlap
Bory Bagienne nad Bukową
IUCN Not Reported
Site of Community Importance (Habitats Directive)
3.55 km² overlap
Kuryłowski Obszar Chronionego Krajobrazu
IUCN Not Assigned
Protected Landscape Area
3.16 km² overlap
Lasy Janowskie
IUCN Not Reported
Special Protection Area (Birds Directive)
2.94 km² overlap
Zarośle
IUCN Not Reported
Site of Community Importance (Habitats Directive)
2.60 km² overlap
Źródła Tanwi
IUCN IV
Nature Reserve
1.86 km² overlap
Uroczyska Lasów Janowskich
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
1.32 km² overlap
Park Krajobrazowy Lasy Janowskie
IUCN V
Landscape Park
1.17 km² overlap
Bukowy Las
IUCN IV
Nature Reserve
0.86 km² overlap
Obary
IUCN IV
Nature Reserve
0.83 km² overlap
Sztolnie w Senderkach
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.79 km² overlap
Czartowe Pole
IUCN IV
Nature Reserve
0.76 km² overlap
Nad Tanwią
IUCN IV
Nature Reserve
0.47 km² overlap
Dolina Dolnego Sanu
IUCN Not Reported
Site of Community Importance (Habitats Directive)
0.40 km² overlap
Minokąt
IUCN Not Reported
Site of Community Importance (Habitats Directive)
0.26 km² overlap
Zarośle
IUCN IV
Nature Reserve
0.25 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 415 distinct species · 59 297 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Tanew : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 7 types (connectance 12.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.127

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

7,5°C

Annual rain

587mm

Moisture idx (CMI)

-0,21

Runoff

144mm/an

PET

744mm

AET

499mm

Mean slope

1,2°

Water table

184cm

Forest

38%

Crops

34%

Urban

Protected

17%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)