Utah Admin. Code R655-11-6C - External Erosion Control
A. All
downstream slopes of dams should be protected from erosion by placing armor or
seeding with grasses. No planting of any shrubs, trees, or other woody
vegetation will be allowed unless it is approved in writing by the State
Engineer.
B. All downstream groins
of dams receiving runoff from adjacent abutments shall be protected from
erosion.
C. All upstream slopes on
dams which impound water for significant lengths of time shall be armored. If
rock riprap is used it shall be well graded, durable, and sized to withstand
wave action. If the material underlying the riprap is fine grained and subject
to erosion, a properly designed filter blanket must be installed. Geotextiles
may be used in lieu of the filter blanket at the discretion of the State
Engineer.
Notes
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