Helping farmers calculate water requirements Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) Dairy officer Benita Kelsall calculates farm water use on the Department of Primary Industries’ new online water calculator. Contact the authorby Carla Okai April 18, 2011 A new online calculator can help Colac district farmers assess their water security. Unlock full access to Colac Herald - Subscribe today! Subscribe Now Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) Tags: Rural