Backwater Reservoir
...that the embankment dam at Backwater Reservoir was the first in Britain to employ chemical grouting in order to form a waterproof barrier beneath the embankment?
...that the <a href="./Embankment_dam" id="mwCyc" rel="mw:WikiLink" title="Embankment dam">embankment dam</a> at <b id="mwCyg"><a href="./Backwater_Reservoir" id="mwCyk" rel="mw:WikiLink" title="Backwater Reservoir">Backwater Reservoir</a></b> was the first in Britain to employ chemical grouting in order to form a waterproof barrier beneath the embankment?