Press Release

June 20,2011

Incorporated Administrative Agency, Fisheries Research Agency

Pilot surveys for restoring affected salmon hatcheries
? Toward successful salmon releases in the coming spring ?

Almost all salmon hatcheries along the coasts of Iwate and Miyagi Prefectures were damaged during the Great East Japan Earthquake. There is an urgent need to restore the hatcheries since the number of future salmon returns will be sharply reduced if the autumn hatchery project fails. The Fisheries Research Agency staffs visited the sites and surveyed the damage at the request of the prefectural governments. The surveys revealed that early research of well capacities, such as pumping capacity and water quality, is indispensable for the restoration because water of stable temperature and quality is crucial for hatching and stocking of salmon. Contractors will conduct the research, but expert knowledge and techniques on salmon hatching and stocking are required for establishing the research methods and contents.

The Fisheries Research Agency decided to conduct pilot research of well capacities. The pilot research at the four hatcheries selected by consulting with the prefectural governments will assist research at the other hatcheries, and the results will contribute to drawing up plans for the salmon enhancement project and restoration of the hatcheries.

(1) Hatchery and scheduled date of research

  • Shimoakka Hatchery (Noda-mura, Iwate Prefecture): Afternoon of June 20 to the morning of June 23
  • Kesen Hatchery (Rikuzentakada City, Iwate Prefecture): Afternoon of June 27 to the morning of June 30
  • Motoyoshi Hatchery (Kesennuma City, Miyagi Prefecture): Morning of July 1 to the afternoon of July 3
  • Minamisanriku-cho Hatchery (Minamisanriku-cho, Miyagi Prefecture): Afternoon of July 4 to the morning of July 7
Note: The dates may change depending on the progress of the research.

(2) Contents of the research

The amount of water to be used for hatching will be measured by operating the pump continuously for three days; changes in water level will be monitored; and water quality, etc. will be analyzed.