Sedimentation survey

• Hundreds of small reservoirs are surveyed each year by various agencies and organizations to obtain information on the remaining capacity and on the sediment
• sediment yield information from the sediment volume and its volume weight,
• sediment distribution from the location of the deposits in relation to vertical and horizontal distances
• physical properties of the sediment by direct measurement and laboratory analyses of samples of the deposited sediment
• reservoir trap efficiency (percent of the sediment yield entering the reservoir that is deposited in it).
• systematic survey procedure is needed so that the survey can form the basis for obtaining additional information at a later date.
• A standardized procedure also permits comparison of information on one reservoir with that on others
• It assures obtaining all necessary data.