The deposited volume of each check dam layer was determined by investigating the status of check dams on the loess plateau

digging typical check dams

carrying out the sectional analysis

utilizing reservoir storage and measuring deposited thickness of a layer. Single erosive rainfall was ascertained according to the principle of“more rain

more sediment yield”. Correlation analyses of deposited volume with the maximum rainfall intensity in thirty minutes (I30)

rainfall amount (P)

rainfall erosivity (R) and average rainfall intensity ( I) were made

the re-sult of which indicated close relationships among them. Relationships between deposited volume and the three in-dexes were then established. A good fitting plot between calculated result and observed data was found. The re-search offers a theory basis for the study of water2induced damage.