HydroBASINS lev08 watershed · #2080497090
Bassin de Marcal
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 10 administrative regions : Ajka, Celldömölk, Hévíz/Keszthely, Pápa, Sárvár +5
Sub-basin area
1 942,7km²
Upstream area
1 942,7km²
Discharge
6,81m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 675.0 km²34.7% of basin
- 375.5 km²19.3% of basin
- 296.0 km²15.2% of basin
- 264.1 km²13.6% of basin
- 183.9 km²9.4% of basin
- 96.6 km²5.0% of basin
- 19.2 km²1.0% of basin
- 16.7 km²0.9% of basin
2 moreFull L2 list
- Veszprém10.6 km² · 0.5%
- Hévíz/Keszthely10.5 km² · 0.5%
30 intersecting protected areas
Marcal-medence
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
48.87 km² overlap
Felső-Nyirádi-erdő és Meggyes-erdő
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
41.77 km² overlap
Északi-Bakony
IUCN Not ReportedSpecial Protection Area (Birds Directive)
25.48 km² overlap
Északi-Bakony
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
25.48 km² overlap
Kab-hegy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.90 km² overlap
Devecseri Széki-erdő
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.94 km² overlap
Agár-tető
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.29 km² overlap
Keszthelyi-hegység
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.13 km² overlap
Somló Tájvédelmi Körzet
IUCN VLandscape Protection Area
5.69 km² overlap
21 more protected areassorted by overlap area
National Park
4.64 km² overlap
Gércei tufagyűrű és láprét
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.55 km² overlap
Nature Conservation Area
3.96 km² overlap
Nature Conservation Area
3.60 km² overlap
Nature Conservation Area
3.08 km² overlap
Nature Conservation Area
2.97 km² overlap
Nature Conservation Area
2.67 km² overlap
Landscape Protection Area
2.38 km² overlap
Ság-hegy
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.38 km² overlap
Dörögdi-medence
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.19 km² overlap
Güssing Fishponds
IUCN Not ReportedWetland of International Importance (Ramsar Site)
1.48 km² overlap
Öregcser
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.81 km² overlap
Nature Conservation Area
0.65 km² overlap
Nature Conservation Area
0.34 km² overlap
Kemenessömjéni cserjés legelő
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.31 km² overlap
Uzsai-erdő
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.27 km² overlap
Nature Conservation Area
0.24 km² overlap
Nature Conservation Area
0.15 km² overlap
Nature Conservation Area
0.15 km² overlap
Nature Conservation Area
0.13 km² overlap
Nature Conservation Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 245 distinct species · 7 314 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Marcal : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 162 interactions GloBI sur 5 types (connectance 15.7%, filtre Serrano α=0.2). 11 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°
10,0°C
Annual rain
599mm
Moisture idx (CMI)
-0,33
Runoff
111mm/an
PET
889mm
AET
509mm
Mean slope
1,4°
Water table
152cm
Forest
18%
Crops
44%
Urban
3%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)