Stormwater Design Best Practices for Developers

Stormwater management is one of the most regulated and technically complex aspects of site development. Poorly designed stormwater systems create ongoing maintenance problems, regulatory violations, and downstream flooding.

Best practices in stormwater design begin with understanding the regulatory framework. In Missouri, stormwater design is governed by the Missouri Department of Natural Resources, local MS4 programs, and individual municipal requirements.

Key principles of effective stormwater design include detention and retention, conveyance capacity, water quality treatment, erosion and sediment control during construction, and long-term maintenance planning.

Engaging a qualified civil engineer early in the development process ensures stormwater design is integrated into the overall site plan rather than treated as an afterthought. Retrofit solutions are always more expensive than designs developed from the beginning with stormwater in mind.