A series of improvements since 1974 has led to the establishment of two artificial freshwater lagoons , a children 's playground , disabled user access , car parking improvements , a large roofed amenity block with bench seats and tables , a riverside boardwalk and public jetty on the river , and pedestrian pathway system , garden furniture , and an artistic installation commemorating the 1974 flood showing the height of the floodwaters . A toilet block was under construction at the time of the heritage listing . These structures are not considered to be significant
1974 flood
1974 Brisbane flood
Sherwood Arboretum