There certainly is!
Situated in the Ballina Shire, Killen Falls is approx. 20 mins from Ballina or Lennox Head. This is a tranquil picnic area with a viewing platform over the small falls.
A scenic 50 minute drive from Ballina you can explore the world heritage listed rainforest of Nightcap National Park featuring Minyon Falls and Protestor Falls, both are very popular day trips with many opportunities for walks and picnics.
Please note swimming is not permitted in any of the waterfalls in the region.