Interagency Hydrology Committee for Alaska (IHCA)

Date Last Modified

February 7, 2018
The Water Cycle
Current News

    Next IHCA meeting, early April, 2018, Anchorage, details TBD

     Agenda coming soon!

    Recent meeting notes


ChairCharley Palmer, Alaska Department of Environmental Conservation (ADEC)

Vice-chairPaul Burger, National Park Service (NPS)

SecretaryAngela Bolton, Anchorage Water and Wastewater Utility (AWWU)

Past ChairScott Lindsey, NOAA Alaska-Pacific River Forecast Center

About Us

The Interagency Hydrology Committee for Alaska (IHCA) is an organization of technical specialists working at the Federal, State, and local levels, who coordinate the collection and implementation of water resources related data throughout the State of Alaska. The IHCA meets twice per year to coordinate multi-agency issues and exchange of information. 

Recent Water Resources Highlights

Alaska Interagency Water Rights Course Materials, October 24-28, 2016 (posted December, 2017)

Alaska NHDPlus Alpha, download data (posted November, 2017)

Alaska Hydrography Database (AK Hydro) (posted October, 2017)

NGWA Letter to President-elect Trump (posted December, 2016)

NOAA Water Initiative (posted December, 2016)


Coordinated efforts to address hydrological and climatological issues in Alaska dates back to the early 1960's when a "Technical Committee" was established under the auspices of the Subcommittee on Hydrology, Interagency Committee on Water Resources (ICWR). The parent committee became the Hydrology Committee of the United States Water Resources Council (WRC).

In 1977 members of the Interagency Technical Committee for Alaska developed an Organization, Objectives, and Operation statement in response to a growing need to improve coordination among agencies for hydrologic and climatologic data. In November, 1977 the Committee approved this document and adopted the name "Interagency Hydrology Committee for Alaska" (IHCA). The IHCA continued to operate under the sponsorship of, and receive guidance from, and report to the WRC Hydrology Committee.

Additionally, the IHCA has acted as the technical advisory committee of the past Governor's Alaska Water Management Council.