HydroBASINS lev08 watershed · #2080579320
Bassin de l'Échez
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 : Hautes-Pyrénées, Pyrénées-Atlantiques
Sub-basin area
397,2km²
Upstream area
397,3km²
Discharge
7,9m³/s
Mean elev.
361m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 320.6 km²80.6% of basin
- 77.3 km²19.4% of basin
75 communes (GADM L5)Available for FRA, RWA
- Ibos32.80 km²100% commune
- Ossun23.81 km²86% commune
- Ger22.61 km²70% commune
- Montaner18.60 km²94% commune
- Vic-en-Bigorre17.32 km²52% commune
- Azereix14.61 km²97% commune
- Saint-Lézer11.30 km²100% commune
- Bordères-sur-l'Échez10.56 km²66% commune
- Tarasteix10.14 km²100% commune
- Larreule10.03 km²100% commune
- Oursbelille9.38 km²81% commune
- Oroix8.73 km²100% commune
- Juillan8.72 km²100% commune
- Caixon8.34 km²100% commune
- Ponson-Dessus8.31 km²75% commune
- Bénac8.07 km²100% commune
- Lamayou7.93 km²84% commune
- Adé6.97 km²92% commune
- Labatut6.82 km²78% commune
- Odos6.76 km²77% commune
- Siarrouy6.67 km²100% commune
- Louey5.99 km²100% commune
- Orincles5.88 km²100% commune
- Lanne5.74 km²100% commune
- Casteide-Doat5.32 km²100% commune
- Tarbes5.18 km²33% commune
- Arrayou-Lahitte4.87 km²100% commune
- Lagarde4.82 km²100% commune
- Maubourguet4.71 km²20% commune
- Arrodets-ez-Angles4.48 km²100% commune
- Astugue4.41 km²55% commune
- Saint-Martin4.36 km²52% commune
- Averan4.20 km²95% commune
- Nouilhan3.91 km²86% commune
- Ponson-Debat-Pouts3.87 km²67% commune
- Loucrup3.48 km²90% commune
- Bartrès3.47 km²47% commune
- Sère-Lanso3.45 km²86% commune
- Julos3.18 km²56% commune
- Jarret3.18 km²76% commune
- Les Angles3.16 km²100% commune
- Pujo3.12 km²60% commune
- Layrisse3.10 km²100% commune
- Visker3.02 km²73% commune
- Escoubès-Pouts2.85 km²100% commune
- Lézignan2.82 km²100% commune
- Barry2.79 km²100% commune
- Andrest2.58 km²42% commune
- Lahitte-Toupière2.49 km²42% commune
- Gayan2.39 km²98% commune
- Paréac2.35 km²100% commune
- Gez-ez-Angles2.35 km²100% commune
- Ossun-ez-Angles2.23 km²100% commune
- Arcizac-ez-Angles1.95 km²100% commune
- Monségur1.78 km²69% commune
- Lourdes1.67 km²4% commune
- Pintac1.47 km²100% commune
- Talazac1.42 km²100% commune
- Hibarette1.40 km²100% commune
- Sanous1.32 km²100% commune
- Artigues1.25 km²92% commune
- Bourréac1.17 km²99% commune
- Neuilh1.16 km²46% commune
- Castéra-Loubix1.12 km²33% commune
- Pontiacq-Viellepinte0.98 km²14% commune
- Sombrun0.73 km²8% commune
- Lamarque-Pontacq0.61 km²6% commune
- Cheust0.55 km²16% commune
- Germs-sur-l'Oussouet0.54 km²4% commune
- Hiis0.20 km²6% commune
- Montgaillard0.19 km²2% commune
- Camalès0.12 km²3% commune
- Momères0.04 km²2% commune
- Laloubère0.01 km²0% commune
- Vidouze0.00 km²0% commune
1 intersecting protected areas
Vallée de l'Adour
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 475 distinct species · 73 502 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 l'Échez : 38 espèces + 4 bulles famille, 93 interactions GloBI documentées sur 5 types (connectance 10.8%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
11,5°C
Annual rain
852mm
Moisture idx (CMI)
-0,10
Runoff
570mm/an
PET
944mm
AET
691mm
Mean slope
4,5°
Water table
204cm
Forest
48%
Crops
39%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)