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Peripheral Canal Route?

Possible route of the new peripheral canal proposal. This purely speculative diagram is based upon a series of existing Tags: control, infrastructure, speculation, water

Posted by John Bass on 08/14 at 01:26 PM • #

Peripheral Canal

A peripheral canal, formally called the Eastern Alignment Isolated Facility, is the latest preferred alternative of policy makers in California’s…

Posted by John Bass on 07/18 at 04:47 PM • #

Washouts

Catastrophic levee failure is a fact of life in the Delta.

The map shows the location of “scour ponds,”…

Posted by John Bass on 05/23 at 12:51 AM • #

Through-Delta Conveyance

Staten Island Tip is the site of future speculative work by the Delta National Park design team.

The diagram…

Tags: control, water
Posted by dnpadmin on 05/23 at 12:48 AM • #

The Delta

The Delta is a productive agricultural region with an increasingly uncertain future.

Located just east of and draining into…

Posted by dnpadmin on 05/23 at 12:47 AM • #

Temporary Dams

The schematic and ungenerous public posture of the South Delta’s temporary barriers make them the site of future speculative work…

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

State and Federal Aqueducts

The primary means of exporting water from the Delta are two large aqueducts.

Together, they export nearly three million…

Posted by dnpadmin on 05/23 at 12:43 AM • #

Schwarzenegger Letter

October 29, 2003 letter from Governor Schwarzenegger to Sen. Dianne Feinstein encouraging the reauthorization of CALFED, the bureaucracy charged with…

Posted by dnpadmin on 05/23 at 12:19 AM • #

Large Owner Axis Exchange Authority

The Large Owner Axis Exchange Authority would coordinate development along the north-south axis of the Delta.

The LOA spans…

Posted by dnpadmin on 05/22 at 11:37 PM • #

Flood History

One of the consequences of Delta reclamation is that the land created there is subject to the threat of flooding.…

Posted by dnpadmin on 05/22 at 11:31 PM • #

Delta Wetlands Project

The Delta Wetlands Project is an example of successful consensus-building achieved through hybrid form.

The DWP is a…

Tags: nature, water
Posted by dnpadmin on 05/22 at 11:27 PM • #

Confused Fish

Diagram describing the altered movement of fish in the Delta.

Fish confused by the pull of the water project…

Posted by dnpadmin on 05/22 at 11:11 PM • #

Images

Siphon spring diagram

Siphon spring diagram

Conceptual diagram of a peripheral canal siphon spring facility. Siphon springs would occur at the intersections of the proposed canal and existing Delta waterways. Siphon springs would be in part infrastructure, and part an occasion to create a new Delta recreational space.

The diagram shows a siphon passing under an existing Delta waterway, and two head-driven artificial artesian “springs” that would inject Sacramento River water into intersecting waterways.

Possible peripheral canal route?

Possible peripheral canal route?

Purely a speculative diagram, this route would take economic advantage of a number of “borrow pits,” so-called because they were created to provide fill for the construction of I-5. The pits are similar in dimension to the proposed “isolated conveyance facility.” Most are now riparian habitats, and some are protected wildlife preserves. The diagram also shows how the siphon infrastructure at intersecting rivers and sloughs could be designed to “freshen” the Delta’s waterways, improving Delta water quality and ecosystem health.

Scour ponds

Scour ponds

Diagram locating the flood events that remain visible from aerial examination. In many cases, these events continue to mark the landscape in the form of “washout gardens.”

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.

cable ferry

cable ferry

Cable ferries would allow for new patterns of movement through the Delta.

Zebra mussel cart

Zebra mussel cart

Water Project Aqueduct

Water Project Aqueduct

State and federal aqueducts supply northern California water to the southern half of the state. This supply will increase as a percentage of total supply due to decrease export from the Colorado River.

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.

South Delta Exchange Authority

South Delta Exchange Authority

The South Delta Exchange Authority trades development, water quality, agricultural, environmental, and tourism interests. See Levee Urbanism for a description of the SDEA at an architectural scale.

Sod farm irrigation

Sod farm irrigation

Sod farm on Terminous Tract.

Schwarzenegger Letter

Schwarzenegger Letter

October 2003 letter from Governor Schwarzenegger to Sen. Feinstein encouraging the reauthorization of Cal-Fed, the bureacracy charged with overseeing the future of the Delta.

Saline Lands Exchange Authority

Saline Lands Exchange Authority

Land at the western edge of the Delta is subject to higher water salinity levels because of the proximity to San Francisco Bay. Controlling salinity is a major task for state and federal agencies.

Pirate’s Lair

Pirate’s Lair

Pirate’s Lair Marina, Andrus Island, one of the Delta’s finer oases. The marina is on the Delta Loop, the only existing tourist trail to date in the Delta. More tourist trails and opportunities need to be imagined and realized.

Panorama from Mandeville to Venice Island

Panorama from Mandeville to Venice Island

Each Fourth of July, the space between the two islands fills with boats that enjoy a fireworks display put on by the owners of Venice Island, the Hilton family.

Oxbow Marina postcard

Oxbow Marina postcard

Oxbow Marina is an dense community of retirees and boaters.

Mandeville Island Bridge

Mandeville Island Bridge

This bridge provides access to Mandeville Island, owned by the Tuscany Research Institute. The island was previously owned by Steve Wynn, Las Vegas casino magnate and duck hunter. The bridge, like other bridges and ferries scattered throughout the Delta, is private and crossing it requires permission of the owner of Mandeville Island, not easily acquired.

Mandeville claims

Mandeville claims

Diagram showing various techniques and consequences of reclamation.

Delta Cross Channel sluice gate

Delta Cross Channel sluice gate

The Delta Cross Channel sluice gate in its lowered position. The Cross Channel allows water to be redirected toward the water project pumps.

Lodgegcamp Exchange Diagram

Lodgegcamp Exchange Diagram

The farmworker gives squash to the birdwatcher. The birdwatcher tells the hunter where to hunt. The hunter gives a duck to the farmworker.

Levee Urbanism, channel island diagram

Levee Urbanism, channel island diagram

Diagram of Levee Urbanism, showing the relationship of dense linear subdivisions to waterways.

Levee Urbanism water view

Levee Urbanism water view

View of the Oxbow Marina-Style properties of Levee Urbanism. The space between, in front of, and and underneath the buildings would be habitat managed by property owners.

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.

Levee Urbanism exchange diagram

Levee Urbanism exchange diagram

Flood control and water quality infrastructure, habitat and recreation, managed urbanization using patterns already well-establsihed in the Delta.

Levee comparison, typical vs setback

Levee comparison, typical vs setback

Typical levee on top, setback levee on bottom. Setback levees resolve conflicts between flood control, environmental, and water supply interests.

Large property owners

Large property owners

Mandeville, Bacon, Venice, Staten, and Bouldin Islands are all owned by a single family or corporation.

Large Owner Axis

Large Owner Axis

Large Owner Axis diagram showing past or present island owners and their source of wealth. The Large Owner Axis is a chain of islands that connect the two most important elements of the Delta’s water redistribution infrastructure.

The LOA is also the key axis of planned “through-Delta” water redistribution infrastructure proposals, whether or not these improvements are tied to the new Peripheral Canal proposal.

Jones Tract flood access issues

Jones Tract flood access issues

View of Jones Tract flood, looking toward the flooded Bacon Island Road, which provides the only road access to Bacon Island.

Jones Tract flood

Jones Tract flood

Photograph showing the extent of the 2004 Jones Tract flood, which covered 10,000 acres.

Lum Bunn farm water tower

Lum Bunn farm water tower

The old water tower at the Lum Bunn farm, Tyler Island. Water towers like this one predate the extensive diesel and electrical system that now powers the manipulation of water in the Delta.

Fishing, bridge and pump

Fishing, bridge and pump

Fishing among infrastructure in the Delta.

Fishing in the Central Delta

Fishing in the Central Delta

Relaxing at the water’s edge, Twitchell Island tip.

Fishing in the South Delta

Fishing in the South Delta

The Delta is an important recreational space for many urban dwellers.

Flooded field, Bacon Island

Flooded field, Bacon Island

When their fields are fallow, farmers often allow their fields to take on some water. This keeps the ground from subsiding and allows migrating birds to forage.

Floating Boathouse 2

Floating Boathouse 2

Floating boathouse, Eddo’s Harbor and RV Park.

Drainage ditch, Grand Island

Drainage ditch, Grand Island

A primary drainage ditch on Grand Island. In the north Delta most ditches serve as habitat. In the south Delta, many ditches are concrete-lined, and serve no environmental purpose. Without a drainage regimen, Delta islands would be inundated.

Discovery Bay aerial

Discovery Bay aerial

Infrared aerial image of Discovery Bay, a cul-de-sac community of recreational boat owners.

Delta Wetlands Project pumps

Delta Wetlands Project pumps

Engineering diagrams of the massive pumping systems required by the Delta Wetlands Project.

Delta Wetlands Project islands overview

Delta Wetlands Project islands overview

Bouldin Island, Webb Tract, Holland Tract, and Bacon Island are the four islands that comprise the Delta Wetlands Project.

Delta Wetlands Project, Bacon Island diagram

Delta Wetlands Project, Bacon Island diagram

Diagram describing the Delta Wetlands Project proposal to develop Bacon Island into a reservoir, showing pump locations and island cross sections.

Delta watershed

Delta watershed

The entire central valley drains into the Delta.

Delta water structure

Delta water structure

Diagram showing water systems in a part of the Delta.

Delta flood occurrence since 1900

Delta flood occurrence since 1900

Delta flood history

Delta flood history

Diagram describing the history of delta island floods. Darker gray represents more flood events, with a maximum number of nine.

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.

CALFED “Through-Delta” Proposal

CALFED “Through-Delta” Proposal

One of CALFED’s scenarios calls for levee improvements through the center of the Delta linking the Delta Cross Channel to the Pumps. This territory coincides with the Large Owner Axis and the Delta Wetlands Project.

Borrow Pit Exchange Authority Diagram

Borrow Pit Exchange Authority Diagram

Boil Chimney

Boil Chimney

A ‘boil’ is the name for a leak that comes up under a levee and appears at its toe on the land side. A boil chimney is built around a leak in the inner levee wall. A ring sandbags is raised around the leak until the water pressure is equalized.

Backyard in Discovery Bay

Backyard in Discovery Bay

This is a typical backyard in Discovery Bay

Shimasaki Memorial phasing

Shimasaki Memorial phasing

Diagram showing the phasing of the Shimasaki Memorial and its integration with the Delta Wetlands Project

Shimasaki Memorial exchange diagram

Shimasaki Memorial exchange diagram

Shimasaki Memorial bath

Shimasaki Memorial bath

Mokelumne Pipes

Mokelumne Pipes

These pipes take water from the Mokelumne River across the Delta to Contra Costa county. Note how much the ground has subsided from the pile caps since construction.

Video

Clifton Court Forebay GatesClifton Court Forebay Gates
Fish salvage efforts after floodFish salvage efforts after flood
1980s Peripheral Canal argument1980s Peripheral Canal argument
Tom Zuckerman on the peripheral canalTom Zuckerman on the peripheral canal
ThirstThirst

Other

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