Rio Grande - Romero-Guadalupe Channel Rectification Project_Application

• Basin Roundtable: Rio Grande
• Applicant: Romero Irrigation Co.
• Description: Romero-Guadalupe Channel Rectification Project
• Account Source: Basin
• Board Meeting Date: 9/19/2007
• Contract/PO #: 08000000060
• WSRF - Doc Type: Grant Application

Water Supply Reserve Account – Grant Application Form
Form Revised May 200 7
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locations and pools. Various age classes of trout also hold in the deep glide created upstream of the
structure and against both banks due to the increased depth and reduced velocity of flows in the near -
bank region.

J - Hook Vane rock structures :
The J - Hook Vane is an u pstream directed, gently sloping structure composed of natural materials , in this
case rock . The structure is located on the outside of stream bends where strong downwelling
and upwelling currents, high boundary stress, and high velocity gradients generate high stress in
the near - bank region. The structure is designed to reduce bank erosion by reducing near - bank
slope, velocity, velocity gradient, stream power and shear stress. Redirection of the secondary
cells from the near - bank region does not cause eros ion due to back - eddy re - circulation. The
vane portion of the structure occupies 1/3 of the bankfull width of the channel, while the “hook”
occupies the center 1/3. Maximum velocity, shear stress, stream power and velocity gradients are
decreased in the nea rbank region and increased in the center of the channel. Sediment transport
competence and capacity can be maintained as a result of the increased shear stress and stream power in
the center 1/3 of the channel. Backwater is created only in the near - bank re gion, and the small
departure angle gently redirects the velocity vectors from the near - bank region, reducing active
bank erosion.

Deliverables:

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A channel that will hold expected and experienced floodwaters of the Conejos
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Maintain the stable width/depth ratio of the channel;
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Maintain the shear stress to move the largest size particle to maintain stability;
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Decrease near - bank velocity, shear stress or stream power;
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Ensure stability of structures during major floods;
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Maintain fish passage at all flows;
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Impr ove fish habitat;
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Be visually compatible with natural channels;
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Be less costly than traditional structures;
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Reduce maintenance or create maintenance - free diversion structures;
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Reduce erosion and prevent sediment deposition ; and

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Proactive and continuing mai ntenance by our two senior ditch systems

Expectations and Effects:

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Protect the community of Guadalupe

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