Val Joly
| Dam Name | Val Joly |
| River | Helpe Majeure |
| Near City | Maubeuge |
| Administration City | Nord |
| Country | France |
| Year | 1968 |
| Dam Height | 16 |
| Dam Length | 315 |
| Area(Sqkm) | 1.1 |
| Area(Polygonal) | 1.1 |
| Capital Expenditure | 4.5 |
| Depth(M) | 4.1 |
| Avg Displacement Of Water | 1872 |
| Catchment Area In Sqkm | 176 |
| Main Usage | Other |
| Status | 2: Good |
| Longitude | 4.112083 |
| Latitude | 50.11875 |
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