Lake level rises after storms Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) RISING: Lake Colac has risen 17cm since June, but needs more rain to avoid dropping too far over summer. Contact the authorby David McKenzie September 2, 2020 Lake Colac has risen 17 centimetres over winter after a wet end to August. 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: Lake Colac, Rain