Accession Number:

ADA379413

Title:

Channel Stability Problems, Iao Stream, Maui, Hawaii

Descriptive Note:

Final rept.

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICSLAB

Personal Author(s):

• Copeland, Ronald R.
• McComas, Dinah N.

Report Date:

2000-06-01

Pagination or Media Count:

55.0

Abstract:

The U.S. Army Engineer Committee on Channel Stabilization participated with the U.S. Army Engineer Honolulu District in a review of channel stability and levee undermining problems in Iao Stream, Maui, Hawaii. The Committee provided cost effective structural and nonstructural recommendations. Iao Stream is part of a flood control project where maintenance costs must be minimized and aesthetics and wildlife habitat are important. Any project changes to ensure protection from the Standard Project Flood must be cost effective. The Committee identified several significant natural processes that are currently adversely affecting Iao Stream. These included local scour due to flow impingement, generalized degradation, and headcutting. Geotechnical processes contributing to bank instability were also identified. Studies were recommended to better determine the relative significance of various processes. The Committee developed two conceptual designs for Iao Stream that met the project objectives of flood control and environmental enhancement.

Descriptors:

• *CHANNELS(WATERWAYS)
• *LEVEES
• *WATER EROSION
• COST EFFECTIVENESS
• ENVIRONMENTAL IMPACT
• BANKS(WATERWAYS)
• HABITATS
• CHANNEL FLOW
• HAWAII
• FLOOD CONTROL

Subject Categories:

• Physical and Dynamic Oceanography
• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE