From Wilmington, Mass ., to Ipswich Bay at Plum Island, the river's deep current courses mostly between undercut banks that do not lend themselves to wading.
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Rather than standing in the stream casting for hour after hour, searching for what might be promising holes, riffles, or undercut banks, trout fishing here is like bone fishing.
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More specifically they are usually found over substrates of sand or clay overlain with silt and organic debris, and are often associated with submerged aquatic vegetation, hydrophytes, and overhanging vegetation along undercut banks.
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Trout fishermen quickly learn to cast near undercut banks or rock ledges rather than to naked runs; likewise, largemouth bass anglers know to work lily pad beds or sunken trees instead of the open bottom.
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Part of the bank jutted out just upstream of me, and I knew that if I cast backhanded, about 10 feet upstream, I could flick the fly around to a small, protected run by an undercut bank.
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The typical habitat conditions of small streams where the dace lives include : water supplied by clear, cool springs or seeps, absence of strong currents, effective cover like undercut banks and heavy brushy vegetation, and minimal large piscivorous fish populations.
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The aim of these projects are to replant native trees and shrubs along stream banks, construct fences to keep livestock out, do an array of in-stream habitat improvement projects including adding large woody debris or gravel to streams, and stabilize eroding or undercut banks.
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Smallmouth inhabit the same lies and holding areas that customarily hold trout; look for them on the slow-water side of current seams, beneath foam lines, the undercut banks, behind the rock, lurking below the underwater ledge, hiding beneath the debris in an eddy, the downstream side of a gravel bar.