Evaluation of sediment production and siltation in a small earth dam in Fernandópolis, SP

The siltation is a natural process, but can be accelerated by human actions and results in major problems for the reservoirs, reducing its useful volume for irrigation. An example of this problem was the reduction of the area of mirror water of Fernandópolis municipal dam in 48.3% during 20 years. Therefore, this study aimed to evaluate the production of sediments and siltation of Fernandópolis municipal dam from a methodology that can be applied to small earth dams for agricultural purposes. For this, it was monitored, monthly throughout the year, the volume of sediment deposited in the reservoir. The percentage of retention sediment in Fernandópolis municipal dam ranged from 53.9 to 94.5%, that associated with a high specific sediment yield, will cause its full silting in at most 57 years. It is recommended to minimize this process the restoration of permanent preservation areas and the removal of 17,500 m³ of sediment from the riverbed of the dam.

Bibliographic Details

Main Authors:	Vanzela,Luiz S., Grecco,Diego L. G., Costa Neto,José N. da, Santos,Gilmar O.
Format:	Digital revista
Language:	English
Published:	Associação Brasileira de Engenharia Agrícola 2014
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000500010
Tags:	Add Tag No Tags, Be the first to tag this record!