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GSWMA (Editor) (2011): Technical Manual. Integrated Watershed Management Programme (IWMP). Gandhingar: Gujarat State Watershed Management Agency (GSWMA). URL [Accessed: 08.05.2012].

The appropriate design and proper selection of site is very important for ridge to valley treatment. This manual (only online available as an open source document) gives systematically ridge to valley treatment with details engineering activities with appropriate design, drawings, estimation example and photograph of each structure.