HydroBASINS lev08 watershed · #2080454220

Bassin de Regen

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 across 2 countries : Cham, Deggendorf, Domažlice, Freyung-Grafenau, Klatovy +5

Pfafstetter: 22799308

Sub-basin area

2 877,5km²

Upstream area

2 877,5km²

Discharge

32,73m³/s

Mean elev.

579m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Donau760 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

10 dept-equivalent regions (GADM L2)

Cham
Bayern · Germany
1177.2 km²
40.8% of basin
Regen
Bayern · Germany
929.6 km²
32.2% of basin
Schwandorf
Bayern · Germany
272.9 km²
9.5% of basin
Regensburg
Bayern · Germany
240.2 km²
8.3% of basin
Domažlice
Plzeňský · Czechia
106.6 km²
3.7% of basin
Klatovy
Plzeňský · Czechia
63.5 km²
2.2% of basin
Straubing-Bogen
Bayern · Germany
61.5 km²
2.1% of basin
Deggendorf
Bayern · Germany
17.4 km²
0.6% of basin

2 moreFull L2 list

Freyung-Grafenau11.1 km² · 0.4%
Regensburg (Kreisfreie Stadt)6.7 km² · 0.2%

30 intersecting protected areas

Oberer Bayerischer Wald
IUCN V
Landscape Protection Area
1011.76 km² overlap
LSG "Bayerischer Wald"
IUCN V
Landscape Protection Area
825.98 km² overlap
Oberer Bayerischer Wald
IUCN V
Landscape Protection Area
147.36 km² overlap
Verordnung über die Landschaftsschutzgebiete im Landkreis Regensburg
IUCN V
Landscape Protection Area
120.93 km² overlap
Nationalpark Bayerischer Wald
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
100.06 km² overlap
Bayerischer Wald
IUCN II
National Park
99.79 km² overlap
Nationalpark Bayerischer Wald
IUCN Not Reported
Special Protection Area (Birds Directive)
99.21 km² overlap
Šumava
IUCN Not Reported
Site of Community Importance (Habitats Directive)
52.02 km² overlap
Šumava
IUCN Not Applicable
UNESCO-MAB Biosphere Reserve
49.94 km² overlap

21 more protected areassorted by overlap area

Großer und Kleiner Arber mit Schwarzeck
IUCN Not Reported
Special Protection Area (Birds Directive)
35.46 km² overlap
Šumava
IUCN V
Protected Landscape Area
34.34 km² overlap
Šumava
IUCN Not Reported
Special Protection Area (Birds Directive)
33.65 km² overlap
Chamb, Regentalaue und Regen zwischen Roding und Donaumündung
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
32.64 km² overlap
LSG innerhalb des Naturparks Oberpfälzer Wald (ehemals Schutzzone)
IUCN V
Landscape Protection Area
31.43 km² overlap
Regentalaue und Chambtal mit Rötelseeweihergebiet
IUCN Not Reported
Special Protection Area (Birds Directive)
28.12 km² overlap
Großer und Kleiner Arber mit Arberseen
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
23.17 km² overlap
Český les
IUCN V
Protected Landscape Area
22.45 km² overlap
Oberlauf des Regens und Nebenbäche
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
18.94 km² overlap
Šumava
IUCN II
National Park
17.64 km² overlap
Čerchovský les
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
14.64 km² overlap
Regentalaue zwischen Cham und Pösing
IUCN IV
Nature Reserve
14.27 km² overlap
Královský hvozd
IUCN III
Nature Monument
12.74 km² overlap
Deggendorfer Vorwald
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
6.40 km² overlap
Oberlauf des Weißen Regens bis Kötzting mit Kaitersbachaue
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
6.35 km² overlap
Hoher Bogen
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.08 km² overlap
Waldweihergebiet im Postloher Forst
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
4.21 km² overlap
Kleiner Arbersee
IUCN IV
Nature Reserve
4.11 km² overlap
Kleiner und Großer Osser, Zwercheck und Schwarzeck
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.78 km² overlap
Regentalhänge bei Hirschling
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.22 km² overlap
Silberberg
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
3.16 km² overlap

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

Species present

9 937 distinct species · 644 128 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 30 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 Regen : 26 espèces reliées par 77 interactions GloBI sur 5 types (connectance 16.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.166

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°

6,9°C

Annual rain

817mm

Moisture idx (CMI)

0,08

Runoff

359mm/an

PET

736mm

AET

592mm

Mean slope

6,9°

Water table

393cm

Forest

81%

Crops

13%

Urban

Protected

77%

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