HydroBASINS lev08 watershed · #2080431940
Bassin de Ancre
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 : Pas-de-Calais, Somme
Sub-basin area
380,5km²
Upstream area
380,7km²
Discharge
5,24m³/s
Mean elev.
108m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 281.9 km²73.8% of basin
- 99.9 km²26.2% of basin
83 communes (GADM L5)Available for FRA, RWA
- Albert14.39 km²100% commune
- Miraumont13.82 km²100% commune
- Bucquoy12.91 km²62% commune
- Puisieux12.02 km²100% commune
- Fricourt11.81 km²100% commune
- Ligny-Thilloy10.79 km²100% commune
- Le Transloy9.98 km²92% commune
- Ovillers-la-Boisselle9.71 km²100% commune
- Heilly9.30 km²100% commune
- Hébuterne9.14 km²81% commune
- Ribemont-sur-Ancre8.94 km²100% commune
- Mesnil-Martinsart8.75 km²100% commune
- Méaulte8.75 km²81% commune
- Longueval8.61 km²96% commune
- Beaumont-Hamel8.34 km²100% commune
- Grandcourt8.15 km²100% commune
- Achiet-le-Petit7.23 km²98% commune
- Mametz6.91 km²100% commune
- Montauban-de-Picardie6.86 km²89% commune
- Morlancourt6.82 km²60% commune
- Méricourt-l'Abbé6.80 km²93% commune
- Aveluy6.62 km²100% commune
- Dernancourt6.50 km²100% commune
- Bouzincourt6.47 km²84% commune
- Flers6.25 km²100% commune
- Corbie6.21 km²38% commune
- Millencourt5.94 km²100% commune
- Martinpuich5.90 km²100% commune
- Ville-sur-Ancre5.88 km²93% commune
- Bonnay5.79 km²100% commune
- Contalmaison5.75 km²100% commune
- Irles5.30 km²100% commune
- Buire-sur-l'Ancre5.27 km²100% commune
- Lesbœufs5.24 km²87% commune
- Pys5.24 km²100% commune
- Bazentin5.14 km²100% commune
- Le Sars4.96 km²100% commune
- Beaulencourt4.77 km²100% commune
- Gueudecourt4.69 km²100% commune
- Auchonvillers4.51 km²79% commune
- Courcelette4.50 km²100% commune
- Englebelmer4.35 km²47% commune
- Thiepval4.29 km²100% commune
- Beaucourt-sur-l'Ancre3.66 km²100% commune
- Grévillers3.66 km²54% commune
- Bécordel-Bécourt3.61 km²100% commune
- Authuille3.56 km²100% commune
- Pozières3.35 km²100% commune
- Warlencourt-Eaucourt3.19 km²100% commune
- Bresle3.11 km²86% commune
- Gommecourt3.11 km²99% commune
- Carnoy2.82 km²100% commune
- Maricourt2.39 km²32% commune
- Rocquigny2.37 km²66% commune
- Ginchy2.23 km²36% commune
- Laviéville2.11 km²100% commune
- Bapaume2.10 km²36% commune
- Treux2.05 km²100% commune
- Villers-au-Flos2.05 km²36% commune
- Franvillers2.04 km²46% commune
- Baizieux1.97 km²38% commune
- Hénencourt1.77 km²52% commune
- Achiet-le-Grand1.72 km²34% commune
- Riencourt-lès-Bapaume1.57 km²44% commune
- Bray-sur-Somme1.22 km²7% commune
- Ablainzevelle1.13 km²25% commune
- Lahoussoye0.88 km²21% commune
- Sailly-Saillisel0.86 km²9% commune
- Suzanne0.78 km²9% commune
- Mailly-Maillet0.63 km²5% commune
- Foncquevillers0.56 km²6% commune
- Senlis-le-Sec0.28 km²3% commune
- Barastre0.26 km²3% commune
- Sailly-le-Sec0.24 km²4% commune
- Morval0.21 km²10% commune
- Vaux-sur-Somme0.18 km²4% commune
- Avesnes-lès-Bapaume0.17 km²6% commune
- Bihucourt0.12 km²3% commune
- Guillemont0.11 km²4% commune
- Colincamps0.05 km²1% commune
- Sailly-Laurette0.03 km²0% commune
- Sailly-au-Bois0.02 km²0% commune
- Courcelles-le-Comte0.01 km²0% commune
2 intersecting protected areas
Geotope Protection Order
0.00 km² overlap
Le Quaternaire de la vallée de la Somme, loess et paléosols du Pléistocène sup., Heilly
IUCN Not ReportedGeotope Protection Order
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 041 distinct species · 66 259 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Ancre : 25 espèces reliées par 110 interactions GloBI sur 5 types (connectance 17.5%, filtre Serrano α=0.2). 11 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°
9,9°C
Annual rain
668mm
Moisture idx (CMI)
-0,10
Runoff
425mm/an
PET
743mm
AET
534mm
Mean slope
1,8°
Water table
101cm
Forest
0%
Crops
71%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)