Whitewater Park Leak Sealing
The Job
The Wisp Resort, situated atop Wisp Mountain in Western Maryland, operates a unique manmade whitewater park. This feature is constructed from large boulders and concrete weir walls, engineered to deliver a recreational whitewater experience. Crucially, the structure also serves a dual function during the winter months, acting as a critical water storage reservoir for the resort’s snowmaking operations. Operational personnel at the resort contacted CJGeo when they identified several distinct locations where water pathways had developed. These leaks compromised the integrity of the containment structure, allowing water to flow outside the designed whitewater course and reducing the efficiency of the reservoir.
Installing the CJGrout 20SDB geotechnical polyurethane.
The Challenge
Restoring watertight performance without a major rebuild was the main challenge. Leaks occurred between the large, natural boulders and the concrete weir walls. This interface suggests the flow paths were highly irregular. The resulting voids were also potentially very large. Traditional grouting materials often fail when voids are this big. The chosen solution needed to fill large, variable spaces effectively. It also had to stop the water flow immediately. This action would preserve water reserves needed for snowmaking operations.
The Solution
CJGeo proposed using CJGrout 20SDB geotechnical polyurethane to seal the identified water pathways. The 20SDB product was specifically selected for this application due to its exceptional performance in high-flow and large-void environments. Traditional, lifting-style grouting foams often struggle to properly set or achieve full volume expansion when faced with very large or highly active voids. The 20SDB polyurethane, however, is formulated to migrate through and fully react within such conditions, providing a tenacious seal and robust structural consolidation. A single CJGeo crew mobilized to the mountain-top site and successfully completed the necessary grouting operations in just two days, effectively sealing the leaks and returning the whitewater structure to its original design condition.
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