Colac-Beech Forest-Crowes Railway Conservation Management Plan : Prepared for Colac-Otway Shire by Norman Houghton, August 2003. (Note. This CMP not adopted by Shire and this copy lacks some supporting documentation. NH 2012) . Addendum to Conservation Management Plan for the Colac-Beech Forest-Crowes Railway Route : In relation to 400 metres of railway route on property at 5145 Colac to Lavers Hill Road, Lavers Hill / Norman Houghton 2010. (To be read in conjunction with the original Conservation Management Plan as developed for the Colac Otway Shire, 2003, by Norman Houghton.)