Tip # 15: Don't Call Me A Dip

A rolling dip drain is an unintrusive method of getting water off of a trail. It is effective on trails with mild grades. Make them gentle, shallow, and wide (typically, at least 18”). They need to go across the whole width of the trail. A properly constructed rolling dip drain may stay open with no maintenance for several years.

For a great series of documents about trail building and maintenance, check out the IMBA (International Mountain Bike Association) site. www.imba.com/resources/trail_building/index.html