A small percentage of ESN granules are buoyant and may float in water. Some surface movement is possible if surface water flow is strong enough to erode soil in conventional-till, or erode residue in no-till. Significant movement of ESN offsite is rare and results from the combination of recently applied ESN, sloping topography, bare soil, and sufficient rainfall for erosion, a combination that should be avoided. ESN may be less prone to floating and movement if the fields previously received a moderate rain that firmed soil or residue contact with the granules. Light incorporation is preferred where possible to prevent the possibility of granule movement.