salt water

salt water

Underwater Alewife

9h ago
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Description

Take 5 minutes to swim with the Alewife. The Alewife is a "River Herring" it's an anadramous fish, meaning it can survive in both fresh water and salt water. The Alewife lives it's life out in the ocean, but comes back to fresh water rivers to spawn. A common problem is that the Alewife faces some obstacles. Because of the industrial revolution many dams have been made for mills of many kinds. We no longer need dams for mills anymore, but these dams have been left. In many cases it is not possible to remove the dams because of structural issues and land that would be flooded if the dam was taken out. So, fish-ladders are installed to help the Alewife get over the dam. For many years the Grandgabel Park dam in downtown Riverhead NY received a fish-ladder which was very labor intensive to install and take out after the Alewife run was over, so the Peconic Estuary Program received a grant to install a permanent fish-ladder. What you see is the result of how effective the new fish-ladder works. More to come on our show "On the Water & In the Field"