Although California has been declared out of the statewide emergency drought, we still have unpredictable rain. We have received sporadic rain events throughout the summer months mainly due to climate change. These out of season rain events may also bring flash floods in the foothills which cause more damage than a steady rain flow that usually occurs in the winter. The rainy season in Southern California is generally regarded from October 1 through April 15 of the following year.
In an effort to prepare for the seasonal rain, homeowners and HOA managers are encouraged to check all drainage devices such as concrete bench drains, swales, channels, and natural stream beds on their properties to ensure that they are cleared of all debris and plant overgrowth that may obstruct rainwater flow. San Dimas has a number of rolling hillside areas, and proper drainage of these hillside areas is necessary to minimize the risk of flooding, hillside erosion, and landslides.
Sand bags are a very useful tool in diverting water, protecting slopes and structures, and assisting in erosion control. As mentioned above, sometimes we are unable to be prepared before a storm but we can prepare for the regarded rainy season. Sand piles will be available for residents at the beginning of October in the parking lot at the San Dimas City Yard - 301 South Walnut Avenue. Bring a shovel and fill a few bags to keep for a rainy day.
As a reminder, disposal of anything, other than rainwater, into the storm drain system is a violation of the San Dimas Municipal Code and the Federal Clean Water Act. If you observe any illegal disposal in drainage swales, catch basins, or on the street, please contact the Public Works Department at (909) 394-6240.
Thank you for doing your part to keep our home and community safe.