Dr. Luke J Pen was a biologist and environmental scientist in South Western Australia. He researched and wrote about rivers and their biology and management. He died in 2002.

A memorial walk path on the Kalgan River

Kalgan River

The Kalgan River is a river in the Great Southern region of Western Australia.The mouth of the river is found at coordinates 34°57'3.13"S 117°58'41.41"E.- Geography :The river is long and, along with the King River, drains into Oyster Harbour...

 commemorates his efforts and work to raise interest and knowledge in local rivers

In 2008 a memorial scholarship in his name was created to support students of riverine environments in their research

Books

• Muirden,Peter: Pen, Luke and Marnie Leybourne (2003) Stream and catchment hydrology in South West Western Australia Perth, W.A. Dept. of Environment. Department of Environment river restoration, 1442-6919 ; report no. RR19 ISBN 1920849246
• Pen, Luke J.(1999) Managing our rivers : a guide to the nature and management of the streams of south-west Western Australia (editor, June Hutchison) East Perth, W.A. : Water and Rivers Commission. ISBN 0730974502