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to obtain accurate distances. The Emery method uses two 5-foot calibrated rods 

 and the horizon to measure distances to, and changes in elevation between, two 

 survey points. Errors are additive and large elevation errors are possible par- 

 ticularly on wide beaches. 



This report discusses a modified stadia surveying procedure which, when used 

 properly, is fast and produces data of comparable accuracy to level and tape 

 surveying. Because more readings are taken (three per survey point), the data 

 provide a higher degree of confidence than is available with the other 

 methods. The modifications include the addition of two stakes to the profile 

 line monument at ion, pacing the distance between each point, and performing a 

 simple mental field check of data quality. Using the stadia method, a typical 

 profile of 10 to 15 survey points can be surveyed in 15 to 20 minutes including 

 instrument setup time. 



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