Black Beach (NSW 393) is the little used town beach for Kiama and lies at the foot of the main shopping centre. It derives its name from the large proportion of black basalt sand and cobbles that compose the curving 130 m long beach, which is located at the base of Kiama Harbour and faces east out the harbour entrance. The beach is backed by continuous seawall and walkway, then tall Norfolk Island pines and Black Reserve and picnic area, with all the amenities of Kiama behind, while Blow Hole Point with its famous blowhole extends out past the harbour.
Duranbah Beach (NSW 1, also called Flagstaff Beach) is the most northern beach in NSW. The 500 m long beach faces east and is located between the northern 400 m long entrance wall of the Tweed River mouth (Figure 4.3) and the 30 m high black basalt slopes of Point Danger, which marks the Queensland-NSW border. Prior to the commencement of construction of the initial northern Tweed River training wall in 1900, the beach was part of an unstable sandy river entrance. The wall has defined and stablised the beach, which is now backed by a low fenced grassy foredune and backing car park and a road running the length of the beach to the old quarry site below Point Danger. The northern section of road is protected by a seawall, fronted by basalt boulders towards the point.The beach is composed of fine sand and exposed to waves averaging 1.5 m, which combine to produce a low gradient beach up to 100 m wide, with an attached bar, usually cut by rips against the rocks at either end and a more mobile central rip. In addition the Tweed River flows seaward of the entrance walls and produces an extensive entrance bar and river channel.
The Port Elliot beach (153) is 700 m long faces east at the jetty and swings round to face south against Commodore Point. Because of the protection afforded the bay waves average 0.5 m increasing slightly toward Freeman Knob. The low waves together with the medium to coarse sand, produce a high, steep beach, with no bar following low waves, and a narrow bar after high waves. These conditions cause the waves to surge strongly up the beach. Regular beach cusps are a feature of the shoreline.