There was a planning application in December 2004 for a Log Flume which was approved. One of the planning stipulations was that it had to be constructed within 5 years and that tree/bush planting had to be done prior to the ride being constructed.... Maybe the reason for the delay?
Key parts of document are
5. OFFICERS REPORT
A new ride, a Log Flume, is proposed to the west of the small boating lake at Wicksteed Park. It is set within grassland, at one of the lowest points within the complex; a natural dip in the park.
The ride is a steel frame rising to 11.5 metres, with a length of about 77 metres following an irregular track. The track meanders through banked earth and rock structures. Riders, sitting in boats with the appearance of logs, drop into a water-filled splash area. Riders will access the ride through a wooden cabin. Details of this cabin and a smaller control cabin remain to be submitted.