HydroBASINS lev08 watershed · #2080057170
Bassin de Leirvogsá
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 22 administrative regions : Akranes, Bessastaðahreppur, Borgarbyggð, Borgarfjarðarsveit, Garðabær +17
Sub-basin area
2 524,3km²
Upstream area
2 524,3km²
Discharge
26,86m³/s
Mean elev.
190m
Administrative coverage
22 dept-equivalent regions (GADM L2)
- 276.0 km²10.9% of basin
- 266.7 km²10.5% of basin
- 264.0 km²10.4% of basin
- 263.8 km²10.4% of basin
- 194.4 km²7.7% of basin
- 189.2 km²7.4% of basin
- 156.0 km²6.1% of basin
- 132.2 km²5.2% of basin
14 moreFull L2 list
- Reykjanesbær131.1 km² · 5.2%
- Kópavogur111.0 km² · 4.4%
- Ölfushreppur103.4 km² · 4.1%
- Hafnarfjörður95.3 km² · 3.8%
- Sandgerði83.1 km² · 3.3%
- Skilmannahreppur49.1 km² · 1.9%
- Borgarfjarðarsveit38.6 km² · 1.5%
- Garðabær37.1 km² · 1.5%
- Innri-Akraneshreppur28.6 km² · 1.1%
- Þingvallahreppur12.2 km² · 0.5%
- Akranes7.8 km² · 0.3%
- Bessastaðahreppur3.4 km² · 0.1%
- Grímsnes- og Grafningshreppur0.9 km² · 0.0%
- Borgarbyggð0.0 km² · 0.0%
30 intersecting protected areas
Reykjanesfólkvangur
IUCN VPublic Recreation Area or Country Park
95.53 km² overlap
Bláfjöll
IUCN VPublic Recreation Area or Country Park
84.95 km² overlap
Andakíll
IUCN IVHabitat protection
13.12 km² overlap
Wetland of International Importance (Ramsar Site)
13.12 km² overlap
Þingvellir
IUCN IINational Park
4.75 km² overlap
Grunnafjörður
IUCN IVNature Reserve
3.50 km² overlap
Búrfell, Búrfellsgjá og Selgjá
IUCN IIINatural Monument
3.40 km² overlap
Andakill Protected Habitat Area
IUCN Not ReportedWetland of International Importance (Ramsar Site)
3.16 km² overlap
Grunnafjördur
IUCN IVWetland of International Importance (Ramsar Site)
3.16 km² overlap
21 more protected areassorted by overlap area
Vatnshornsskógur
IUCN IVNatural Monument
2.47 km² overlap
Kaldárhraun og Gjárnar
IUCN IIINatural Monument
2.09 km² overlap
Blautós og Innstavogsnes
IUCN IVNature Reserve
1.99 km² overlap
Vífilsstaðavatn
IUCN IVNature Reserve
1.88 km² overlap
Habitat protection
1.55 km² overlap
Blikastaðakró-Leiruvogur
IUCN IVNature Reserve
1.45 km² overlap
Rauðhólar
IUCN VPublic Recreation Area or Country Park
1.30 km² overlap
Gálgahraun
IUCN IIINature Reserve
1.03 km² overlap
Nature Reserve
0.89 km² overlap
Vífilsstaðahraun
IUCN VPublic Recreation Area or Country Park
0.66 km² overlap
Garðahraun-efra
IUCN VPublic Recreation Area or Country Park
0.58 km² overlap
Ástjörn og Ásfjall
IUCN VPublic Recreation Area or Country Park
0.57 km² overlap
Eldborg í Bláfjöllum
IUCN IIINatural Monument
0.35 km² overlap
Skerjafjörður innan Kópavogs
IUCN IVHabitat protection
0.31 km² overlap
Ástjörn
IUCN IVNature Reserve
0.29 km² overlap
Hleinar
IUCN VPublic Recreation Area or Country Park
0.27 km² overlap
Garðahraun-neðra
IUCN VPublic Recreation Area or Country Park
0.20 km² overlap
Bringur
IUCN VPublic Recreation Area or Country Park
0.19 km² overlap
Stekkjahraun
IUCN VPublic Recreation Area or Country Park
0.16 km² overlap
Hlið
IUCN VPublic Recreation Area or Country Park
0.16 km² overlap
Public Recreation Area or Country Park
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 019 distinct species · 261 904 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Leirvogsá : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 4 types (connectance 15.0%, filtre Serrano α=0.2). 17 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°
3,7°C
Annual rain
995mm
Moisture idx (CMI)
0,66
Runoff
1 437mm/an
PET
336mm
AET
323mm
Mean slope
7,4°
Water table
0cm
Forest
0%
Crops
0%
Urban
4%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)