We had six inches of rain Saturday and Sunday in Sag Harbor, a downer for the weekend crowd, a blessing for the alewives, frogs, and salamanders. Ligonee Brook is a longstanding stream that runs intermittently down through the last century and more. Its course has changed more than once and it only runs from Long Pond to Ligonee Cove to Sag Harbor Cove once every five years. Nonetheless, it is an important conduit for alewives and eels.