An Interesting Factoid

Reid (2005) reported that for small alpine streams in BC, Manning's n varied by 5 orders of magnitude from the lowest flows (highest n) to the highest flows studied, as flow resistance increased at lower flows with more coarse sediment exposed.

What Would Being A Grain of Sediment Be Like?

Trying to get inside the state of a grain being transported here...

Bedrock Channel Streams

Here is a question I have been thinking about. In a bedrock channel stream, although the streambanks are not alluvial in nature, nonetheless, there is often a defined bank, either by vegetation or a morphometric or geometric break. Is there a characteristic discharge associated with these banks or is it just marking the last big flood to flow through and scour off the vegetation? I am not sure.



Five Mile Creek near Nelson is a creek I did not survey because it had an almost totally bedrock reach above the gauge.

In work news, I'm testing out ArcGIS 9.2 and seeing how it syncs with HEC-GEORAS