Temporary Dams

The schematic and ungenerous public posture of the South Delta’s temporary barriers make them the site of future speculative work by the Delta National Park design team.

The South Delta Temporary Barriers Project has been in use since 1991, and was initiated in response to a lawsuit filed by the South Delta Water Agency. The barriers have served to increase the supply and quality of water for South Delta farmers and to help Chinook Salmon navigate their migration.

These dams are currently conceived of as simply infrastructure, with lots of chain link fencing, no parking signs, and a security guard. Given their unique locations and increasing pressure on the Delta to function in diverse ways for a diverse constituency, the barriers could serve greater public benefit if recreational programs were developed in and around them.

Posted by dnpadmin on 05/23 at 12:45 AM • #

Images

CALFED Temporary Barrier Locations

CALFED Temporary Barrier Locations

CALFED diagram showing the locations of the temporary barriers. These need to be programmed for recreational use.

Levee Urbanism Guarded Dam

Levee Urbanism Guarded Dam

Temporary dam, head of Middle River. These important elements of infrastructure are typically un-public, and are opportunities for future work by the DNP design team.

Temporary barrier locations

Temporary barrier locations

South delta temporary barriers resolve conflicts between water quality and environmental advocates. Barriers similar to this one are a key component of the Peripheral Canal proposal, and are the sites of future speculative work by the DNP design team.

Isolated facility - eastern alignment alternative

Isolated facility - eastern alignment alternative

The Eastern Alignment Isolated Facility is the latest preferred alternative of the planners of the ongoing crisis in California’s contentious debate over Delta water export.

Two components comprise the facility—The Eastern Alignment Isolated Conveyance Component, and Through-Delta improvements. The proposed EAIC would have 1/ a 41-mile canal skirting the eastern edge of the Delta; 2/ an intake facility near hood that would divert up to 15,000 cfs out of the Sacramento River before entering the Delta; 3/ 8 siphons over rivers and sloughs; 4/ 3 culverts under sloughs; 5/ 18 bridges over state highways and roads; 6/ 2 rail bridges

The through-Delta improvements would include: 1/ 75 miles of retrofitted setback levees; 2/ 60 miles dredged rivers and sloughs; 3/ barriers at Old River, Connection Slough and Woodward Canal; 4/ a siphon at old river to direct water to clifton court forebay.

Fishing at a Tokyo dam

Fishing at a Tokyo dam

A popular fishing spot at Ichigaya Station, Tokyo. Infrastructure and recreation can be integrated.

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