In the Cagayan River Basin, where typhoons usually occur during July-December, about 8 times a year, DPWH will be implementing bank protection works, mainly installation of revetments for most commonly damaged sites namely: Alibago and Catanggaman Revetment, and Catanggaman Spur dike
in Tuguegarao City.
Spur dike are structures to regulate the river and are used in a range of different conditions.
The flow field at a spur dike is coupled with a complex 3D separation of approach flow upstream and a periodic vortex shedding downstream of the spur dike.
Local scour around the spur dike foundations failure spur dikes.
Therefore, knowledge of the anticipated maximum depth of scour for a given discharge is a significant criterion for the proper design of a spur dike foundation.
3] studied the scour and flow field at a spur dike in a 90 degree channel.
Stream channel control measures include constructing spur dikes, grade control structures, riprap bank protection, and small flood-control reservoirs.
Spur dikes are fingers of stone that extend into the creek.
We put in spur dikes, pointing them alternately up and down the stream, added a low ridge of stone along the sandbank, and then planted 3,400 willow tress along the stream.
The spur dikes have increased deep-pool habitats by 200 percent.
In fact," says Cooper, "as a result of our study, the Corps has already modified standard designs in DEC and extended the tips of spur dikes to improve habitats.