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Techniques to quantify ephemeral gully erosion have been identified by USDA Natural Resources Conservation Service (NRCS) as one of the gaps in current erosion assessment tools. One reason that may have contributed to this technology gap is the difficulty to quantify changes in channel geometry to assess the amount of erosion from the gully channels. Another reason that may have also contributed to the NRCS interest in ephemeral gully erosion assessment is the fact that fields implemented with reduced tillage or no-till may have mitigated the surface erosion problem but some of these fields still have ephemeral gullies. Since most conservation practices are designed to minimize erosion from raindrop impact and flow shear as a part of the surface hydrologic processes, gullies at no-till field indicates that subsurface hydrology may have contributed to the formation of these gullies.