March 12, 2018 — SEAFOOD NEWS — A desire by Southeast Alaska longliners to avoid rockfish bycatch in 2009 evolved into a high-tech effort to collect bathymetric data for use in detailed seafloor maps. The maps would ultimately help fishermen avoid bycatch and sensitive habitats like coral and sponge areas. Next week, these detailed and data-rich maps will be available to the fishermen who helped make them.

For the last decade, members of the Fisheries Conservation Network (FCN) used scanning software to map the halibut and sablefish grounds. At the end of each fishing season, FCN members shared the data with ALFA, where it was combined into one database, then used to create the enhanced maps and sent back to the fishermen to continue adding data to.

ALFA Executive Director Linda Behnken, in an interview with KCAW radio in Sitka, said the result is one of the most complex bathymetric databases on the eastern side of the Gulf of Alaska.

“One hundred and forty million data points have been contributed,” she said. “It’s been a lot of years getting to this point. We’re really excited about the level of detail we have now and the quality of the maps.”

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