GUELPH –On September 10th, with the sounds of a jackhammer hammering in the background, the Hanlon Creek monitoring weir was removed within Preservation Park in the City of Guelph. The motivation behind the removal of the weir was multi-purpose. The project objectives were to remove the weir to improve the ability of fish to migrate upstream, while simultaneously lowering the upstream water level, which will narrow the channel and result in cooler stream temperatures.