CLOCA issues warning of hazardous creek conditions Posted on March 11, 2021 by oshawaexpress in CITY, NEWS CLOCA is warning residents to be careful around watercourses and structures as water levels could rise due to increasing temperatures and melting snow. With the incoming warmer weather on the way, the Central Lake Ontario Conservation Authority (CLOCA) is warning residents to steer clear of all waterways. According to the Surface Water Monitoring Centre, incoming weather systems are bringing a mix of warm temperatures and rain to much of the province, including Durham, which is expected to see daytime highs well above zero and possibly into the teens this week.