What is Best Management Practice?

Understanding Best Management Practice

Best Management Practice describes a practical method that helps achieve a defined result. It does this with fewer problems. A BMP may address water flow, soil erosion, material handling, worker safety, maintenance, or pollution prevention. The term appears in stormwater permits, construction plans, environmental programs, and facility maintenance procedures.

Related glossary terms: Environmental Protection Agency, Low Impact Development, Runoff.

A BMP is selected for a specific site and goal. For a roof drainage system, the goal may be moving runoff away from the foundation. It should also prevent soil erosion and walkway flooding. Relevant practices can include correct gutter slope, sealed miter joints, secure downspouts, and a suitable discharge point. The best method depends on roof size, rainfall, soil, grade, and nearby structures.

How Best Management Practice Works, Is Measured, or Is Used?

A BMP starts with a problem statement and a performance target. An installer or property manager reviews the source of the risk. They choose a control and install or perform it correctly. They also check the result. In stormwater work, the process follows the runoff path. It starts at the roof edge and moves through the gutter and downspout. It ends at the final outlet.

Evaluation combines observation with simple records. Useful checks include water flow through the gutter. They also check for standing water, erosion, and blocked systems. A written maintenance schedule can track inspection dates, cleaning needs, repairs, and changes after heavy storms. Where a permit applies, the BMP must match the permit language. It must also match the approved site plan.

• Define the runoff or maintenance problem.
• Select a control that fits the site.
• Install or perform the work according to the design.
• Inspect performance after rain and during scheduled maintenance.
• Correct failures and record the action taken.

Why Best Management Practice Matters?

Good BMPs reduce preventable damage and improve consistency between projects. A gutter that drains toward a foundation may cause wet soil, staining, settlement, or basement moisture. A downspout that releases water onto bare soil may create a channel. That channel can grow after each storm. A suitable outlet, extension, or drainage measure can control that flow.

BMPs also support clear decisions when several solutions could work. A property owner can compare expected performance, maintenance needs, installation limits, and long-term cost. This works better than choosing only by appearance. Written procedures help crews deliver the same result across multiple buildings. Inspection records show when a design needs repair or a different control.

When Best Management Practice Matters Most?

BMPs matter most where runoff, soil, or construction activity can affect buildings and nearby property. Pay close attention on steep lots, large roofs, clay soils, sites near streams, and areas with poor drainage. They also matter during gutter replacement, downspout rerouting, roof work, landscaping changes, and construction that leaves soil exposed.

After installation, heavy rain provides a useful performance test. Look for overflowing gutters, water beneath joints, washout at outlets, clogged screens, and wet areas beside the foundation. In regulated construction or commercial settings, documented controls may be required for stormwater protection. The Environmental Protection Agency describes BMPs as methods and controls used to reduce pollutants in stormwater discharges. Local authorities may set more specific requirements.