Commission on Water Resource Management | IFS: 3028 – He‘eia Stream, O‘ahu

IFS: 3028 – He‘eia Stream, O‘ahu

Instream Flow Standard: Hydrologic Unit of He‘eia (3028)

The Commission on Water Resource Management is preparing to amend the interim instream flow standards for the He‘eia Stream surface water hydrologic unit, Windward O‘ahu.

	Close-up of wetland kalo being grown in He‘eia.
	View of He‘eia watershed looking mauka towards the Ko‘olau mountains.

Gaging

USGS 16275000 Heeia Stream at Haiku Valley nr Kaneohe, Oahu, HI

USGS 16279200 Heeia Stream at Haiku Plantations Dr., Oahu, HI

Events

Date	Action
Oct. 21, 2020	Notice of Public Fact Gathering Meeting: Instream Flow Standard Assessment Report for the Hydrologic Unit of He‘eia (3028)

Information Updates

Date	Action
Jun. 17, 2024	As part of the Honolulu Board of Water Supply’s (BWS’s) response to the Commission’s Order issued on June 15, 2021, BWS submitted its Ha’ikū Tunnel Bulkhead Preliminary Engineering Study Technical Report. Ha‘ikū Tunnel Bulkhead Preliminary Engineering Study (40.4 MB)
Apr. 2024	The U.S. Geological Survey released its Phase 1 report on the He‘eia watershed. SIR 2024-5020: Groundwater and surface-water interactions in the He‘eia watershed, O‘ahu, Hawai‘i—Insights from analysis of historical data and numerical groundwater-model simulations ➽
Sep. 21, 2021	Commission Meeting Agenda Briefing B2: Status of the Order to the Honolulu Board of Water Supply to Bulkhead Haʻikū Tunnel, He‘eia Surface Water Hydrologic Unit, Ko‘olaupoko, O‘ahu Testimony Minutes View Meeting on Vimeo
Jun. 15, 2021	Commission Meeting Agenda Submittal B2: Approve Order to Honolulu Board of Water Supply to Bulkhead Ha‘ikū Tunnel (well 2450-001) at the 10-foot Thick Dike 1,200 feet From the Portal Entrance and Reduce Their Withdrawal to 0.3 million gallons per day He‘eia Hydrologic Unit, Ko‘olaupoko, O‘ahu Presentation Minutes View Meeting on Vimeo
Jan. 19, 2021	Commission Meeting Agenda Briefing C1: Unites States Geological Survey (“USGS”) – Overview of the Hydrogeology of the He‘eia Watershed, O‘ahu Briefing C2: Commission on Water Resource Management, – Draft Amended Interim Instream Flow Standards in the Surface Water Hydrologic Unit of He‘eia (3028): He‘eia Stream, O‘ahu Testimony Minutes View Meeting on Vimeo
Dec. 30, 2020	Compilation of Public Review Comments (Hydro Unit 3028, PR-2020-15) (20.6 MB)
Oct. 21, 2020	Public Fact Gathering Meeting: Instream Flow Standard Assessment Report for the Hydrologic Unit of He‘eia (3028) Notice of Public Fact Gathering Meeting View Public Fact Gathering Meeting on Vimeo
Sep. 24, 2020	Draft Instream Flow Standard Assessment Report for He‘eia. He‘eia (Hydro Unit 3028, PR-2020-02) (11.3 MB)
Sep. 15, 2020	At its Virtual Commission Meeting in September, Hydrologist Dr. Ayron Strauch presented an informational briefing on developing an amended interim instream flow standard for He‘eia Stream, O‘ahu. Virtual September Meeting recording on Vimeo Informational Briefing Presentation, Item C3