$300,000 in improvement works was officially opened last Friday by the regional manager of the National Parks and Wildlife Service, Robert Quirk.

Mr Quirk said it may not have been too noticeable to many people that a $300,000 upgrade had been carried out.

"Most of the work is sitting under the grass," Mr Quirk said. "One of the most important aspects of this upgrade was to ensure that campers were not stranded by flood waters."

The part of the campground which had dropped considerably since the 1980s due to compaction caused a basin-like effect when it rained. This area has been under-filled with soil to raise it by one metre in places.

Representatives from the NPWS, local stakeholders, visitors and Camden Haven residents attended the opening.

Uncle Bill O'Brien spoke on behalf of the traditional land owners, which was then followed by a performance on didgeridoo by Steve Donovan replicating sounds of nature and the earth.

Mr Quirk said the NPWS was always wary of making changes to camping areas which have long histories for returning visitors and locals.

"We realise the importance of maintaining the historical significance of areas such as Diamond Head while at the same time wanting to ensure it remains a popular place into the future."

Previous freestyle camping is no longer available at the camping ground and 67 designated sites have been established, accommodating more than 530 campers at any one time. Mr Quirk said it was hoped that towards the end of the year that bookings would be able to be made online.

"It is all about providing people with ease," he said.

The Member for Port Macquarie, Leslie Williams, said the completion of works was timely considering it was school holidays and as the weather warmed so did the demand for areas such as Diamond Head.

"This is a significant investment in the local community, providing visitors with improved access to an enjoyable, sustainable and safe beachside camping experience, between the townships of Laurieton and Harrington," she said.

"The relocation and realignment of roads has also improved the access to the newly delineated camping sites.

"In addition, the carrying capacity of each campsite has been limited to a maximum of eight persons, which not only addresses issues with overcrowding, but also ensures the campgrounds amenities can cope with the capacity, especially during peak times.

The improvements at Diamond Head campground will provide for a greatly improved camping experience, and set the area up well for the next generations of campers."