HydroBASINS lev08 watershed · #2080421580
Bassin de Blšanka
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 : Karlovy Vary, Louny, Plzeň - sever, Rakovník
Sub-basin area
429,8km²
Upstream area
429,8km²
Discharge
2,09m³/s
Mean elev.
400m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 342.6 km²79.4% of basin
- 41.5 km²9.6% of basin
- 34.0 km²7.9% of basin
- 13.2 km²3.1% of basin
25 intersecting protected areas
Doupovské hory
IUCN Not ReportedSpecial Protection Area (Birds Directive)
40.29 km² overlap
Hradiště
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.84 km² overlap
Valeč
IUCN IVNature Monument
4.02 km² overlap
Doupovské hory
IUCN Not ReportedSite of Community Importance (Habitats Directive)
3.22 km² overlap
Hradiště
IUCN IVContract Protected Area
2.77 km² overlap
Krtské skály
IUCN IIINature Monument
0.89 km² overlap
Dětanský chlum
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.49 km² overlap
Nature Monument
0.49 km² overlap
Petrohrad
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.45 km² overlap
16 more protected areassorted by overlap area
Háj Petra Bezruče
IUCN IVNature Monument
0.43 km² overlap
Valečské lemy
IUCN IIINature Monument
0.39 km² overlap
Dětanský chlum
IUCN IVNature Reserve
0.35 km² overlap
Jezerský vrch
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.26 km² overlap
Luční potok
IUCN IVNature Reserve
0.17 km² overlap
Blatenský svah
IUCN IVNature Reserve
0.13 km² overlap
Dětanský chlum
IUCN IVContract Protected Area
0.10 km² overlap
Jedliny
IUCN IVContract Protected Area
0.08 km² overlap
Jezerský vrch
IUCN IIINature Monument
0.08 km² overlap
Valeč - nad parkem
IUCN IVContract Protected Area
0.06 km² overlap
Soběchlebské terasy
IUCN IVNature Monument
0.03 km² overlap
Soběchlebské terasy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
Ostrovecká olšina
IUCN IVNature Monument
0.02 km² overlap
Ořkovské louky
IUCN IVContract Protected Area
0.00 km² overlap
Valečské sklepy
IUCN IIINature Monument
0.00 km² overlap
Vrbina u Nové Vsi
IUCN IVNature Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 367 distinct species · 11 796 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 Blšanka : 26 espèces reliées par 106 interactions GloBI sur 6 types (connectance 14.3%, 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°
7,1°C
Annual rain
610mm
Moisture idx (CMI)
-0,13
Runoff
156mm/an
PET
705mm
AET
511mm
Mean slope
3,9°
Water table
380cm
Forest
21%
Crops
61%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)