Prepare for fieldwork by making sure you have the documents and tools you need.

Review and print the latest E-19 and/or E-19A Collect tools and necessary parts (if repairs are required) Verify correct datum set for use on handheld GPS or mobile phone Ensure mobile devices are charged Bring a flashlight and extra batteries Practice setting up the level at least the day before the visit and obtain a reading on a local known elevation Note any flood or low-water impacts since the last visit so you can verify impact levels and add the information to HydroBase Make note of any significant changes to watershed such as changes in land use or channel improvement projects Pack a bag with safety equipment, including insect spray, safety vests, and cones, flares, or triangles Pack food and water, particularly if the location is rural Obtain permission from the landowner if the gage is on private property Verify appointments with anyone you plan to see during the fieldwork