Commission on Water Resource Management

The Commission on Water Resource Management’s Ground Water Branch is responsible for collecting basic hydrologic data and conducting water availability and sustainable yield analyses statewide. The information presented below highlights some of the Commission’s monitoring activities essential to the protection of Hawaii’s water resources.  The U.S. Geological Survey also collects water level and deep monitor well data through cooperative agreements with CWRM and other government agencies. The Honolulu Board of Water Supply also has a network of water level and deep monitor wells on Oahu.

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Deep Monitor Well Data

A deep monitor well penetrates the freshwater basal aquifer into the underlying brackish and salt water. It is used to estimate the thickness of the freshwater part of the aquifer (freshwater lens) and the freshwater-saltwater transition zone. For convenience, the vertical profile is divided into three parts: the upper fresh water zone (less than 2% sea water), the transition zone (2% to 50% sea water), and into the saline zone (greater than 50% sea water). The data are presented as graphs of the changes in elevation (feet, mean sea level) of the top of the transition zone (2% seawater) and the midpoint of the transition zone (50% seawater) over time.

Click to view the documents below to learn more about deep monitor wells.

• Deep Monitor Well Information Sheet
• Deep Monitor Well Presentation

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Deep Monitor Well Conductivity / Water Level Data

The Commission on Water Resource Management owns a number of deep monitor wells on the islands of Oahu, Maui, and Hawaii. CWRM staff collects conductivity and water level data for each of these deep monitor wells (DMW). Click on the desired well on the maps below to view a time series of the conductivity and water level data collected at the well. Data for certain Oahu DMWs have been combined into a single graph. Efforts are being made to update the remaining Oahu, Maui, and Hawaii DMWs.

	OAHU WELLS – Halawa – Kunia Mauka – Kunia Middle – Waimalu – Waipahu – Waipio Mauka
	LANAI WELLS Total Reported Pumpage – Central Aquifer Sector – Leeward Aquifer System – Windward Aquifer System
	MAUI WELLS – Iao – Mahinahina – Waiehu – Waihee
	MAUI WELLS – West Maui   6-5631-009   6-5430-005   6-5230-002   6-5130-001   6-4831-001 – East Maui   6-5418-001   6-4824-001   6-4422-001   6-4225-001
	HAWAII WELLS North Kona Basal – Kawaihae 3 – Ouli 1 – Ouli Kawamata – Puu Anahulu North Kona High Level – USGS Waiaka Tank – Kanehoa Kona Basal – Keopu 1 DMW – Kahaluu DMW – Kahaluu DMW-WL – Keauhou A – DWS Pahoehoe – Kalaoa N Kona Kona High Level – USGS Komo – USGS Kealakekua – Kainaliu – Keauhou Kam 2
	KEAUHOU WELLS – Total Reported Pumpage

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Well Log Videos

The Commission is in the process of developing a library of well log videos to aid in the assessment of geologic and hydrologic conditions associated with drilled wells.  All videos are hosted on the Commission’s Vimeo site.  Click on the Island drop-downs below, then click on the active Well No. links below to view the video on Vimeo.