News MRCA reminding dog owners to keep pets on a leash SHARE ON: Taylor Ablett, staff Thursday, Jun. 9th, 2016 The Mattagami Region Conservation Authority is reminding park goers that all dogs have to be on a leash. That includes all MRCA properties: Gillies, Hersey, and the Participark. The only exception to the rule is the Rainbow Loop at Hersey. New signs have been put up place at the Participark and Gillies Lake to remind dog owners.