A saturated buffer stores water within the soil of the field buffer by diverting drainage water from the control structure (that raises the water table) into shallow perforated drains that run parallel to the ditch. As a result, the water flows through the natural filter of the soil. Research has shown that this practice is effective in reducing nitrate transport to downstream water bodies.
For more information regarding a saturated buffer, see the transforming drainage website.
Saturated Buffer Installation and Features, 2022