St Quintin Falls is another named waterfall in the Clinton Valley along the Milford Track. It is a signposted three-tiered waterfall plunging some 115m so it should be easy to spot. There is a signpost identifying this waterfall with a view sandwiched between some quickly growing trees (it's just a matter of time before this view becomes obscured).
For more information on this waterfall such as...
maps
directions
detailed descriptions
refer to A Guide to New Zealand Waterfalls (Story Nature Press).