21. For erosion control, caged riprap is used. 22. The dam was constructed of impervious earthen fill fortified on both sides by riprap . 23. The project involved adding riprap to some reaches. 24. The beach has been modified in past years by the implementation of groins and riprap . 25. Coastal bulkheads are most often referred to as seawalls, bulkheading, or riprap revetments. 26. One way that this is done is by placing riprap or gabions along the bank. 27. The fort is now protected by riprap . 28. The failed sections were repaired with grouted riprap , which can still be seen today. 29. The riprap would have filled the area left between the pier footings and the sheeting. 30. Riprap instability and streambank instability occur in the lower and middle reaches of the stream.
