Sand Fences and Channel Shoaling in Pentwater Village Council Meeting
"The Pentwater Village Council discusses issues of sand fences, channel shoaling, blowing sand, proposed solutions, and future plans to maintain navigability in the local channel. They anticipate challenges due to changing Lake Michigan levels and propose strategies for sustainable management."
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Presentation Transcript
Sand fences Pentwater Village Council May 11, 2015
Channel shoaling Probably two causes Alongshore currents forming sandbar at channel entrance Blowing sand from beaches
Evidence for blowing sand Substantial sand against winter snow fences and trial barriers Substantial sand on pier walks Apparent improvement with trial barriers
Proposed solution Engineering study by Fleis and Vandenbrink Funded privately Much credit to Tom Sturr and Manny Valdez
Thoughts We will probably escape need to dredge again this year because of higher Lake Michigan levels It is likely that Lake levels will drop again, arguably beyond historic values Must prepare for local funds to maintain channel navigability Annual budget Widest possible participation Village Township Lake Improvement Board
Possible downsides Wrong diagnosis Visual Difficulty maintaining railing
Recommendation Fund permanent fencing and arrange for periodic sand removal
Plans Continue mapping Side-scan sonar imaging Possible high-quality scanning by Great Lakes Water Studies Institute of Northwestern Michigan College Continued collaboration with Great Lakes Research Center Profile current
