The state water commission this week is due to consider an application from the City and County of Honolulu for permission to alter channels in four Oahu streams to accommodate a planned commuter rail line.

The city has applied to alter the stream channels for Waiawa Stream Tributary, and the Kapalama, Moanalua, and Nuuanu streams.

The city wants to finish building the 20-mile elevated rail track in 2019. The rail line will run from East Kapolei to Ala Moana Center and include 21 stations.

The Commission on Water Resource Management has put the permit application on the agenda for a meeting scheduled at the Department of Land and Natural Resources board room on Wednesday.