ToolsforProtectingWaterQuality

ByTomGilbert WaterResourcesSpecialist MaineForestService

Most BMP techniques are based on a few simple principles. Understanding these principles will help you to choose or adapt the BMPs that are the most appropriate to the situation and cost effective for your operation. Think of these principles as goals. Any single practice or combination of practices that effectively achieves one or more of these key goals can be considered an appropriate BMP. Remember the outcome is more important that the tool! If it works, it’s a good BMP.

There are 7 BMP principles or “Fundamental BMPs” detailed in the Maine Forest Service BMP manual including:

1. Define Objectives and Responsibilities

2. Pre-Harvest Planning

3. Anticipate Site Conditions

4. Control Water Flow

5. Minimize and Stabilize Exposed Soil

6. Protect the Integrity of Waterbodies

7. Handle Hazardous Materials Safely

Some principles may be more important to pay attention to than others during certain times of the year. Principle #4; Control water flow and Principle #5; Minimize and Stabilize Exposed Soil will be the focus of Maine Forest Service BMP training this spring.

A key concept is to take a systems approach to implementing BMPs. This means using different measures – such as water diversions and soil stabilization techniques (such as slash) on slopes, water crossings and other areas in combination across the entire site - not just in the most vulnerable areas, and not after problems have already begun. In this illustration, notice the placement of multiple water bars, cross-drainage, and other diversion structures across the harvest site and how they work together to manage water in small amounts: As snow begins to melt and rain becomes more frequent, it’s particularly important to consider BMP principles during harvest planning and closeout. To view the Maine Forest Service BMP manual please visit the MFS website at: https://www.maine.gov/dacf/mfs/policy_management/ water_resources/bmps.html. Copies of the manual are also available at the workshops or from your MFS District Forester.