Clough Dam Siphon Installation Project
1 Documents in Project
Summary
SCH Number
2002038536
Public Agency
California Department of Water Resources
(DWR)
Document Title
Clough Dam Siphon Installation Project
Document Type
NOE - Notice of Exemption
Received
Posted
3/27/2002
Document Description
The project involves replacement of an existing private irrigation diversion structure (Clough Dam) on Mill Creek in eastern Tehama County with an inverted siphon at the same location for the purpose and diversion capacity. The project purpose is to permanently remove a historic fish passage barrier whil maintaining existing water rights, capacity and associated land uses to water users on the sourth side of Mill Creek. The project involves removal of the remains of a diversion structure including portions of an associated fish ladder and replacement with a cross channel inverted siphon. The siphon will be connected to the existing screened diversion ditch on the north side of the channel using a prefabricated junction box and the existing irrigation headworks structure on the south side of the channel. The siphon length is approximately 300-feet and will be installed 50-feet below the stream channel elevation using a large excavation. Other project associated activities include construction/installation of a water measurement Parshall flume in the existing screened diversion ditch on the north side of the channel and installation/replacement of two irrigation ditch bridges for site access.
Contact Information
Name
Dave Bogener
Agency Name
Department of Water Resources
Contact Types
Lead/Public Agency
Phone
Location
Counties
Tehama
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
section 15302, 15301, 15304
Reasons for Exemption
Section 15302 - Exemption allows replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the original one and have substantially the same prupose and capacity as the original. Section 15301 - Exemption applies to the operation, repair; maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment or topographical features involving negligible or no expansion of use.
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