HydroBASINS lev08 watershed · #2080473720
Bassin de Egertsgraben
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 2 administrative regions : Bas-Rhin, Haut-Rhin
Sub-basin area
108,7km²
Upstream area
2 864,6km²
Discharge
52,15m³/s
Mean elev.
180m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Fecht585 km²
- Bassin de Rigole de Widensohlen108 km²
2 dept-equivalent regions (GADM L2)
- 90.1 km²82.7% of basin
- 18.9 km²17.3% of basin
15 communes (GADM L5)Available for FRA, RWA
- Sélestat36.02 km²75% commune
- Mussig11.13 km²95% commune
- Kintzheim9.11 km²49% commune
- Ohnenheim8.22 km²67% commune
- Muttersholtz7.04 km²55% commune
- Guémar6.51 km²35% commune
- Illhaeusern6.33 km²60% commune
- Heidolsheim5.14 km²93% commune
- Elsenheim5.13 km²54% commune
- Baldenheim4.66 km²51% commune
- Saint-Hippolyte4.08 km²23% commune
- Orschwiller2.48 km²39% commune
- Bergheim1.82 km²9% commune
- Châtenois1.19 km²8% commune
- Colmar0.16 km²0% commune
30 intersecting protected areas
Ried de Colmar à Sélestat, Bas-Rhin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
33.71 km² overlap
Secteur Alluvial Rhin-Ried-Bruch, Bas-Rhin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.43 km² overlap
Ried De Selestat (Ill*Wald)
IUCN IVRegional Nature Reserve
18.63 km² overlap
Ried de Colmar à Sélestat, Haut-Rhin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.23 km² overlap
Ballons Des Vosges
IUCN VRegional Nature Park
5.96 km² overlap
Secteur Alluvial Rhin-Ried-Bruch, Haut-Rhin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.52 km² overlap
Les Sablieres Leonhart
IUCN IVBiotope Protection Order
0.51 km² overlap
hoeflen (graviere nord)
IUCN IVLand acquired by a regional conservatory of natural areas
0.21 km² overlap
winkel (graviere sud)
IUCN IVLand acquired by a regional conservatory of natural areas
0.19 km² overlap
21 more protected areassorted by overlap area
niederschley
IUCN IVLand acquired by a regional conservatory of natural areas
0.16 km² overlap
rohrmatten
IUCN IVLand acquired by a regional conservatory of natural areas
0.13 km² overlap
brunnenwasser (foret)
IUCN IVLand acquired by a regional conservatory of natural areas
0.10 km² overlap
horgiessen
IUCN IVLand acquired by a regional conservatory of natural areas
0.10 km² overlap
Muttersholtz
IUCN IVForest Managed Biological Reserve
0.06 km² overlap
rappolsweilerried 1
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
oberallmend
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
hurb
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
aue
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
in der waeg
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
neffenstatt
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
bei dem muehlbach
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
muehlmatten
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
baummaettel
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
rappolsweilerried 2
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
breilehfeld
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
grittlach
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
beim bock
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
wasen
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
grafenmatt
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
schmitteich
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 573 distinct species · 96 683 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Egertsgraben : 24 espèces reliées par 118 interactions GloBI sur 6 types (connectance 15.9%, filtre Serrano α=0.2). 15 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°
10,2°C
Annual rain
624mm
Moisture idx (CMI)
-0,24
Runoff
472mm/an
PET
824mm
AET
529mm
Mean slope
1,0°
Water table
44cm
Forest
44%
Crops
35%
Urban
14%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)