Piasau Camp is located about 5 km north of Miri City Centre in the suburb of Piasau, on the beach side of Miri River. Piasau Nature Reserve was previously part of the Piasau Camp, an area owned by Sarawak Shell Berhad (SSB). Driven strong public support, PNR was gazetted on 31st December 2013. Following the gazettement, SSB agreed to undertake the cost of demolishing old buildings at the site.
The demolition works were carried out in three phases starting in December 2014 and PNR was formally handed over to SFC on 17th May 2016 in a simple handing-over ceremony after all the demolition works had been completed.