Storm Water

Baldwin County’s Low Impact Development (LID) Suspended Solids and Nutrient Load Reduction Review Tool

Description: The Baldwin County Subdivision Regulations that were adopted by the Baldwin County Commission on January 7, 2025, require LID stormwater design for higher density developments within the County. The LID stormwater review tool will assist engineers and designers with evaluating stormwater designs which are required to reduce the post-development stormwater runoff rate and improve the water quality of stormwater runoff.   This tool will provide a resource for the County to properly evaluate engineering stormwater design and ensure compliance with the Subdivision Regulations. 

LID TOOL

Baldwin County’s Stormwater Management Design Forms

Description: To facilitate the review process, the Baldwin County Planning Department requires the use of the Stormwater Management Design Forms.

The Stormwater Management Design Forms are required for the following developments:

• Commercial Site Plans (CSP)
• Combined Planned Unit Development & Commission Site Plan (CPD)
• Planned Unit Development (PUD)-Subdivision
• Subdivision Construction Plan Review (CPR)

  The objective of using the form is to:

  • Facilitate the review process
  • Summarize hydrologic and hydraulic calculations
  • Requirements for BMP design
  • Documentation of as-built condition
• P&Z Documents and Checklist

AGWA Storm Water Management Modeling

Description: In 2024, Baldwin County partnered with MBNEP to install several stream and rain gauges across local watersheds, laying the foundation for the County’s comprehensive hydrologic modeling initiative. This agreement expands the comprehensive hydrologic modeling initiative by installing four additional gauges: three at strategic locations along the Styx River and one in the Magnolia River.

The hydrologic modeling initiative supports the implementation of Mobile Bay NEP’s Comprehensive Conservation and Management Plan as well as action items recommended in the Baldwin County regional Watershed Management Plans (WMPs). This program provides beneficial hydrologic data for watersheds within the County that can be used for long-range planning to properly guide future growth and restoration projects within each watershed of the County.

Training

1. 2026 BC Storm Water Modeling LID Tool Training Agenda
2. Stormwater Management Design & Review Training 02/12/26 -Video
   
   

   Watch Video

3. Stormwater Management Design & Review Training-Power Point Presentations
• Mobile Bay National Estuary Program Presentation
• LID Presentation
• Baldwin County Post Construction Forms Training
• AGWA Presentation

Baldwin County is proud to partner with MBNEP, a leader in restoring and protecting our coastal waters and natural resources.  These projects have been funded through a financial partnership with the U.S. Environmental Protection Agency’s National Estuary Program.