Flume herders Proper operation was ensured by "flume herders" who at various locations along the flume checked the flow of lumber and water. On longer flumes, flume herders lived in permanent flume houses along the route. Light signals, and later telephone lines, enabled communication up and down the line.
flume herders proper operation was ensured by "flume herders" who at various locations along the flume checked the flow of lumber and water on longer flumes flume herders lived in perma?nent flume houses along the route light signals and later telephone lines enabled communication up and down the line