Stormwater Outfall Data Requirements, What Must Be Recorded and Why It Matters

A well managed stormwater program depends on accurate and complete information about every outfall in a community. Outfalls are the final discharge points where stormwater leaves the municipal system and enters a stream, lake, wetland, or other receiving water. Because these locations represent the …continue

What Every MS4 Must Map, and Why It Matters for Waterway Protection

A complete and accurate stormwater map is one of the most important responsibilities for any community that operates as a Municipal Separate Storm Sewer System, or MS4. These maps are not created merely to satisfy a regulatory checkbox. They protect waterways, support field crews, reduce liability, …continue

The Fundamentals of Field Inspections for Catch Basins, Culverts, and Outfall.

Field inspections of catch basins, manholes, culverts, and outfalls form the foundation of responsible stormwater management. These routine checks give municipalities an ongoing view of the condition of their drainage network and allow crews to identify issues long before they become flooding hazard…continue

Maintaining Stormwater Drainage Assets with Modern Management Software

*The screenshots used in this article are from Roadwurx, an asset management software created for road maintenance departments. Managing a town’s stormwater system can quickly become overwhelming when maintenance and inspection records are scattered across clipboards, spreadsheets, or dusty fi…continue

Understanding MS4 Expectations for a Complete Stormwater Infrastructure Record

Municipal Separate Storm Sewer System (MS4) permits rest on a simple idea: you cannot manage what you have not first documented. The Environmental Protection Agency (EPA) defines an MS4 as any publicly owned system of drains, pipes, ditches, or similar conveyances that carries runoff to waters of th…continue

Understanding Stormwater Outfalls: Types and Their Environmental Impact

What is a stormwater outfall? A stormwater outfall is the point where a storm-drain system, whether pipes, ditches, or channels, discharges runoff to a receiving water such as a stream, wetland, lake, or the ocean. Regulatory guidance clarifies that simple cross-road culverts, which only pass flow b…continue

Construction Site Runoff Control: Keeping Sediment, Chemicals, and Fines Out of Your Storm Drains

(In the photo above, the silt fence has been improperly installed, as you can see it was placed in loose, already excavated, soil.) Why Construction Runoff Matters A single acre of bare earth can release 10 - 20 times more sediment than the same acre in cropland, and up to 2,000 times more than a fo…continue

Soil & Water Conservation Districts (SWCDs): Your Municipality’s Unsung Stormwater Ally

What exactly is an SWCD? Created under state law in every state and most U.S. territories, nearly 3,000 locally led Soil and Water Conservation Districts now cover almost every county in the nation. Their boards, typically a mix of farmers, municipal officials, and at-large residents, design and del…continue

Gamifying MS4 Refresher Courses to Boost Retention

Why We Need a New Approach Annual (or even quarterly) MS4 refresher courses are mandatory under the NPDES Phase II program, yet completion logs and pop-quiz scores often reveal that municipal crews quickly forget key practices such as spill-response or best management practice (BMP) housekeeping. En…continue

From Paper Plans to GIS: Digitizing Historic Drainage Records

Every municipality owns drawers, or entire vaults, of ageing drainage “plan sets”: linen originals from the 1930s, blueprint mylars from the 1960s, contractor mark-ups from a 1998 sewer separation project, and everything in-between. Transforming those static sheets into a living GIS data…continue

Good, Better, Best: Levels of Documentation That Satisfy Auditors

Why this matters Every MS4 audit, whether it’s a quick screening or a multi-day deep dive, starts with one question: “Show me the records.” Communities that can put the right document on the table (or screen) in seconds walk away with clean reports and lower stress; those that scra…continue

Keeping Pace with the 2025 MS4 Permit Updates

What Changed & Why It Matters for Your Stormwater Program Why new MS4 rules landed in 2025 EPA’s 2015 NPDES Electronic Reporting Rule (the “e-Rule”) postponed many Phase II requirements to give states time to build electronic portals. That grace period ends 21 December 2025, so…continue