Emergency Water Conveyance Prototype Ewcp Tender in USA - 147294560

Procurement Summary

Country: USA

Summary: Emergency Water Conveyance Prototype Ewcp

Deadline: 04 Sep 2026

Posting Date: 15 Aug 2026

Other Information

Notice Type: Tender

TOT Ref.No.: 147294560

Document Ref. No.: W911KB26RWP02

Competition: ICB

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: Refer Document

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Tender Details

Project Requirement: Develop and demonstrate a proof of concept for, and design and construct, a new EWCP to protect the Mendenhall Valley, Juneau, Alaska associated with the severe and escalating flood hazard from GLOFs originating in Suicide Basin. The intent of this project is to prevent water levels in Suicide Basin from reaching an elevation sufficient to produce enough hydraulic pressure against Mendenhall Glacier to initiate a GLOF event. The EWCP shall prevent water levels in the Suicide Basin GDL from rising above an elevation of 1, 100 feet, NAVD88 while safely managing peak discharge rates of approximately 1, 000 cubic feet per second (CFS) to protect downstream communities.
Project Background: The Mendenhall Valley in Juneau, Alaska, is subject to recurrent glacial lake outburst flood (GLOF) events. A GLOF is characterized by the rapid discharge of water from a glacier-dammed lake (GDL), which releases a high-volume surge of water downstream. The GLOF events affecting the Mendenhall Valley originate from Suicide Basin, an over-deepened bedrock depression dammed by the Mendenhall Glacier. Suicide Basin was formed by the retreat of the Suicide Glacier, a tributary that formerly joined the main Mendenhall Glacier. Suicide Basin GLOF events typically initiate shortly after the basin reaches maximum capacity and begins to overtop the surface of the Mendenhall Glacier, which is estimated to impound a pool at an elevation of 1, 350 feet, North American Vertical Datum of 1988 (NAVD88) in the year 2026. The resulting floodwaters route subglacially beneath the Mendenhall Glacier, discharge into Mendenhall Lake, and flow down the Mendenhall River to its outlet at Fritz Cove. Following the release of water from a GLOF event, the pool elevation in Suicide Basin is about 980 feet, NAVD88. The water levels begin to increase again as Mendenhall Glacier impounds rainfall and ice melt runoff in Suicide Basin. Recent events suggest the basin is capable of filling and relea...
Notice ID: w911kb26rwp02

Department/Ind. Agency: dept of defense

Sub-tier: dept of the army

Office: w2sn endist alaska

Product Service Code: y1lc - construction of tunnels and subsurface structures

NAICS Code: 237990 - Other Heavy and Civil Engineering Construction

Inactive Dates: sep 25, 2026

Inactive Policy: manual

Documents

 Tender Notice