Hydraulics
Between three separate locations along the Logan River I observed a handful of hydraulic units which helped cement the ideas
This is Site One where I made the following observations
Flow Separation, flow seam, flow reattachment, shear zone
Hydraulic jump with critical, subcritical, and supercritical flow points
This is Site Two where I observed
Convergent flow
Divergent flow
As well as sketched/painted a planar sketch highlighting these characteristic patterns
This is Site Three which provided an ample opportunity to make some crude flow calculations
Cross-section sketch
Estimated discharge
Highlighted in the picture (left) is an image that shows flow separation on the north bank at Site One
Flow separation , pink arrows
Flow beginning to converge/ reattach, green arrows
The blue arrow on the left side highlights more of a wake type shear zone, while the arrow on the left shows an eddy where the flow is returning upstream
The green arrows begin to highlight where the flow is reattaching and becoming consistent once again
Field sketch last page
Narrated hydraulic jump at Site One
At Site Two in the planar image I labeled examples of geomorphic units I noticed. In the field sketch I indicated convergent and divergent flow as well as arrows that highlighted flow direction and magnitude.
Site Three provided a bridge and a relatively consistent cross-section profile, this allowed for an easy discharge estimate. Upstream of the bridge I also took note of uniform flow, both highlighted on the left.
Calculated velocity using a stick dropped in the estimated average flow point and took note of the time it took to travel a measured distance
Q= V *A
58.8 cfs