“Let the Water Do the Work”
Concepts and Fundamentals
Bill Zeedyk
T h e Q u i v i r a C o a l i t i o n ’s
2 0 0 9 Wa t e r S y m p o s i u m
floodplain
floodplain
organic material
i
i l
fine grained sediment
gravel layer
cobble layer
streambed
Groundwater Flow Through a Meander
Through a Meander Apex
© BZ & TEG
Geomorphic Features of a River Meander
p
plan view
© BZ & TEG
Geomorphic Channel Features
Geomorphic
Channel Features
valley cross section
Longitudinal Profile
110
Riffle starts at steep water surface, ends where bed drops off steeply.
Riffle starts at steep water surface, ends where bed drops off steeply.
108
Run starts where bed drops off steeply, ends at flat water.
elevation (fft)
Pool starts at flat water, ends at upwelling.
106
Glide starts at upwelling ends at steep water surface
Glide starts at upwelling, ends at steep water surface.
104
102
100
0
500
1000
Distance along stream (ft)
1500
Headcut Progresson
© BZ & TEG
Typical Gully Evolution from Rosgen G to C Channel Type
© BZ & TEG
Stream Channel Evolutionary Sequences
Rosgen
The Induced Meandering Process
© BZ & TEG
© BZ & TEG
Placement of Willows in Non‐incised Channels
© BZ & TEG
Placement of Willows in Incised Channels
© BZ & TEG
Gully Stabilization Opportunities
© BZ & TEG
Meander Schematic
Project Dimensions
© BZ & TEG
© BZ & TEG
Data and Graph by Stephen Monroe