HydroBASINS lev08 watershed · #2080584610
Bassin du Salat
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 3 administrative regions across 2 countries : Ariège, Haute-Garonne, Lleida
Sub-basin area
1 575,5km²
Upstream area
1 575,5km²
Discharge
17,76m³/s
Mean elev.
990m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 1351.3 km²85.6% of basin
- 221.7 km²14.0% of basin
- 5.2 km²0.3% of basin
117 communes (GADM L5)Available for FRA, RWA
- Ustou99.76 km²100% commune
- Seix87.37 km²99% commune
- Sentein58.44 km²99% commune
- Couflens55.24 km²100% commune
- Aulus-les-Bains51.82 km²99% commune
- Les Bordes-sur-Lez49.81 km²99% commune
- Le Port49.64 km²100% commune
- Massat45.14 km²99% commune
- Ercé40.82 km²100% commune
- Bonac-Irazein38.17 km²100% commune
- Moulis36.73 km²100% commune
- Saint-Lary33.12 km²97% commune
- Bethmale31.99 km²100% commune
- Rivèrenert28.74 km²100% commune
- Boussenac26.61 km²99% commune
- Soulan23.99 km²100% commune
- Alos23.61 km²100% commune
- Montjoie-en-Couserans23.28 km²77% commune
- Biert23.27 km²100% commune
- Betchat22.31 km²100% commune
- Antras20.22 km²100% commune
- Oust19.35 km²100% commune
- Lescure19.03 km²73% commune
- Rimont18.85 km²65% commune
- Saint-Girons18.55 km²100% commune
- Urau18.54 km²100% commune
- Sentenac-d'Oust18.10 km²100% commune
- Balaguères18.04 km²100% commune
- Cazavet17.95 km²100% commune
- Montastruc-de-Salies16.57 km²100% commune
- Lacourt16.28 km²100% commune
- Prat-Bonrepaux15.08 km²100% commune
- Herran14.81 km²98% commune
- Saleich14.73 km²100% commune
- Soueix-Rogalle14.39 km²100% commune
- Arrien-en-Bethmale14.37 km²100% commune
- Aleu13.90 km²100% commune
- Cérizols13.81 km²98% commune
- Mercenac13.55 km²100% commune
- Chein-Dessus12.68 km²99% commune
- Argein11.67 km²100% commune
- Estadens11.55 km²65% commune
- Fabas11.44 km²49% commune
- Tourtouse11.33 km²94% commune
- Cassagne10.74 km²100% commune
- Belbèze-en-Comminges10.07 km²100% commune
- Augirein9.59 km²100% commune
- Caumont9.54 km²100% commune
- Bédeille9.53 km²100% commune
- Portet-d'Aspet9.48 km²68% commune
- Galey9.41 km²100% commune
- Fougaron9.14 km²100% commune
- Montgauch9.08 km²100% commune
- Saint-Lizier9.00 km²100% commune
- Erp9.00 km²100% commune
- Buzan8.85 km²100% commune
- Engomer7.62 km²100% commune
- Orgibet7.60 km²100% commune
- Gajan7.40 km²90% commune
- Arbas7.10 km²100% commune
- Salies-du-Salat7.00 km²100% commune
- La Bastide-du-Salat6.98 km²100% commune
- Taurignan-Castet6.92 km²100% commune
- Mane6.86 km²100% commune
- Roquefort-sur-Garonne6.65 km²48% commune
- Touille6.42 km²100% commune
- Montégut-en-Couserans6.37 km²100% commune
- Montgaillard-de-Salies6.01 km²100% commune
- Rouède5.95 km²100% commune
- Taurignan-Vieux5.94 km²100% commune
- Lorp-Sentaraille5.91 km²100% commune
- Aucazein5.88 km²100% commune
- Castelbiague5.78 km²100% commune
- Salsein5.70 km²100% commune
- Encourtiech5.50 km²100% commune
- Cescau5.36 km²100% commune
- Francazal5.33 km²100% commune
- Figarol5.32 km²44% commune
- His5.18 km²100% commune
- Ganties5.08 km²42% commune
- Castillon-en-Couserans4.86 km²100% commune
- Saint-Jean-du-Castillonnais4.81 km²100% commune
- Villeneuve4.78 km²100% commune
- Eycheil4.66 km²100% commune
- Escoulis4.46 km²100% commune
- Lacave4.36 km²100% commune
- Lasserre4.31 km²53% commune
- Illartein4.15 km²100% commune
- Audressein4.09 km²100% commune
- Uchentein3.88 km²100% commune
- Mazères-sur-Salat3.84 km²57% commune
- Montesquieu-Avantès3.59 km²22% commune
- Esplas-de-Sérou3.38 km²10% commune
- Bagert3.29 km²100% commune
- Castagnède3.17 km²100% commune
- Arrout2.82 km²100% commune
- Barjac2.80 km²100% commune
- Ausseing2.74 km²46% commune
- Marsoulas2.27 km²100% commune
- Balacet2.09 km²100% commune
- Mauvezin-de-Prat1.68 km²100% commune
- Montsaunès1.15 km²13% commune
- Montespan1.12 km²9% commune
- Auzat0.91 km²1% commune
- Sor0.89 km²100% commune
- Melles0.81 km²2% commune
- Castelnau-Durban0.77 km²6% commune
- Suc-et-Sentenac0.76 km²2% commune
- Aspet0.74 km²3% commune
- Le Bosc0.57 km²2% commune
- Rabat-les-Trois-Seigneurs0.37 km²1% commune
- Sentenac-de-Sérou0.29 km²2% commune
- Saurat0.26 km²1% commune
- Saint-Michel0.23 km²1% commune
- Boutx0.10 km²0% commune
- Milhas0.07 km²1% commune
- Montclar-de-Comminges0.00 km²0% commune
29 intersecting protected areas
Pyrénées Ariégeoises
IUCN VRegional Nature Park
1346.11 km² overlap
Massif du Mont Valier
IUCN Not ReportedSpecial Protection Area (Birds Directive)
154.52 km² overlap
Vallée du Riberot et massif du Mont Valier
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
76.23 km² overlap
Special Areas of Conservation (Habitats Directive)
63.34 km² overlap
Special Protection Area (Birds Directive)
63.34 km² overlap
Chars de Moulis et de Liqué, grotte d'Aubert, Soulane de Balaguères et de Sainte-Catherine, granges des vallées de Sour et d'Astien
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.59 km² overlap
Grotte du Ker de Massat
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
32.27 km² overlap
Mont Ceint, mont Béas, tourbière de Bernadouze
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.99 km² overlap
Alt Pallars
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.17 km² overlap
20 more protected areassorted by overlap area
Alt Pallars
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.17 km² overlap
massif forestier d\'arbas
IUCN IVLand acquired by a regional conservatory of natural areas
4.40 km² overlap
Garonne, Ariège, Hers, Salat, Pique et Neste
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.57 km² overlap
Alt Pirineu
IUCN VProtection Plan
3.32 km² overlap
Alt Pirineu
IUCN VNatural Park
3.32 km² overlap
Marimanha
IUCN VProtection Plan
2.70 km² overlap
Sapinière De L\'Isard
IUCN IVForest Managed Biological Reserve
1.36 km² overlap
Haute vallée de la Garonne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.24 km² overlap
Haute vallée de la Garonne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.24 km² overlap
Biotope Protection Order
0.86 km² overlap
Falaises De Sourroque
IUCN IVBiotope Protection Order
0.85 km² overlap
Baish Aran
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Baish Aran
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.09 km² overlap
Sant Joan de Toran
IUCN VProtection Plan
0.09 km² overlap
Grotte de Tourtouse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Grotte d'Aliou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Biotope Protection Order
0.00 km² overlap
Grotte D\'Aubert
IUCN IVBiotope Protection Order
0.00 km² overlap
Grotte D\'Aliou
IUCN IVBiotope Protection Order
0.00 km² overlap
Grotte De Tourtouse
IUCN IVBiotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 741 distinct species · 569 432 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 du Salat : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 6 types (connectance 12.5%, filtre Serrano α=0.2). 14 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°
9,0°C
Annual rain
977mm
Moisture idx (CMI)
0,12
Runoff
351mm/an
PET
827mm
AET
682mm
Mean slope
18,6°
Water table
675cm
Forest
79%
Crops
1%
Urban
1%
Protected
86%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)