Utah Administrative Code
Topic - Natural Resources
Title R655 - Natural Resources, Water Rights
Rule R655-11 - Requirements for the Design, Construction and Abandonment of Dams
Section R655-11-7A - Outlet Sizing
Universal Citation: UT Admin Code R 655-11-7A
Current through Bulletin 2024-18, September 15, 2024
A. All dams shall have a low level outlet capable of draining the reservoir. Exemptions to this requirement may be granted at the discretion of the State Engineer. Normally, exemptions will only be considered for low head, low hazard dams. Any dead storage must be approved by the State Engineer and must be sufficiently low to eliminate any storage hazard. The outlet should be sized to meet the project demands as well as the following criteria.
1.
All outlets shall be 24 inches in diameter or larger unless exempted in writing
by the State Engineer. Outlets should have valves or capped flanges which can
facilitate entry into the pipe by personnel or video equipment.
2. All outlets shall have the capacity to
evacuate 90% of the active storage capacity of the reservoir within 30 days
neglecting reservoir inflows. The State Engineer may adjust this requirement on
large reservoirs if it can be demonstrated that compliance would result in an
unreasonably sized outlet or potential releases would exceed the downstream
channel carrying capacity.
3. All
outlets shall have the capacity to satisfy prior downstream water rights and
the owners' release requirements.
Disclaimer: These regulations may not be the most recent version. Utah may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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