45°35′13″N 4°46′27″E / 45.586846°N 4.774071°E
| Gier | |
|---|---|
&sq=&lang=&file=File:Le_saut_du_Gier.jpg) Le saut du Gier waterfalls | |
&sq=&lang=&file=File:France_relief_location_map.jpg)  &sq=&lang=&file=File:Auvergne-Rh%C3%B4ne-Alpes_region_relief_location_map.jpg) | |
| Location | |
| Country | France |
| Region | Auvergne-Rhône-Alpes |
| Physical characteristics | |
| Source | |
| • location | Mont Pilat |
| • elevation | 1,300 m (4,300 ft) |
| Mouth | Rhône |
• location | Givors |
• elevation | 145 m (476 ft) |
| Length | 40.3 km (25.0 mi) |
| Basin size | 417 km2 (161 sq mi) |
| Discharge | |
| • average | 3.16 m3/s (112 cu ft/s) |
| Basin features | |
| Progression | Rhône→ Mediterranean Sea |
The Gier (French pronunciation: [ʒje]) is a French river that flows in a northeast direction through the Loire and Rhône departments. It is a tributary of the Rhône, which it enters from the right bank. The Gier valley was formerly heavily industrialized with coal and iron mines and factories.