This document serves as the SOP for collecting streambed and water surface elevation data using an auto level by the CDFW IFP. It is intended for use with other CDFW IFP SOPs, as relevant. Instructions are provided for auto level and tripod set up, use of graduated measuring rod (stadia rod), establishing a vertical benchmark (VBM), closing the level loop, tying VBMs together, collecting water surface elevations (WSELs), collecting wetted bed profile and dry bed elevations, and measuring stage of zero flow (SZF). These procedures are components of a habitat-based hydraulic model used to develop flow vs. habitat relationships as part of an instream flow study for fish and wildlife resources.