Stormwater (Waterways)

Controlling Flooding and Improving Water Quality

Stormwater flows across paved (impervious) surface, picking up materials like trash, metals, oil, soil and chemicals before discharging into creeks and rivers. Ditches, ponds and lakes are used as stormwater facilities to slow the water down, reduce the potential for flooding and settle out contaminants so that mostly clean water flows downstream.

Ralston Creek, Van Bibber Creek, Leyden Creek, Little Dry Creek and the many ponds and lakes within the City's boundaries can be affected. 

These structures channel, divert, and capture stormwater flows to control flooding of downstream properties and improve the water quality of runoff before it gets to creeks and rivers. Examples of stormwater facilities are swales or ditches, detention ponds, and outlet structures.


In general, Home Owners Associations (HOAs) and management companies are responsible for maintaining stormwater facilities. 

The City can help determine who is responsible for maintaining these facilities. The City also inspects both municipal and private stormwater facilities and will explain what maintenance needs to be done.