High-water mark

This imposing structure, which not only carries the single track branch line but also the gas main supplying the Forest of Dean area, cost £200,000 when it was built in 1879, and at its highest point is 70ft above the high-water mark.

Madocks built his model town on land partly reclaimed from the sea, and was justifiably proud of the fact that it stood well below what was still the official high-water mark. Until then, the surrounding area was largely marshland.

The Gettysburg campaign was the high-water mark of the Confederacy's invasions of the North.