August 31, 2008
Byrne Creek Sediment Pond Profiling
The sediment pond upstream of the Byrne Creek artificial spawning habitat is to be cleaned out next week, and streamkeepers decided to do a depth profile of the accumulated silt and gravel, so that we can learn how fast the pond fills after it's been cleaned.
Streamkeeper John W. told me about a method using a transverse line knotted at 1-meter intervals, from which a weighted line is dropped with tabs at 10cm intervals. The method worked like a charm; however, my wife Yumi had to go through some contortions to anchor the line on the side of the pond with a lot of growth next to it!
Yumi setting up the ropes.
Me checking out the drop line.
Streamkeeper John G. helps collect data.
Yumi burrowing through the bush.