Energy and Water Development Appropriations for 1993: Corps of Engineers, Lower Mississippi Valley Division

The project is located in the Tucson metropolitan area, Pima County, Arizona. The city of Tucson has a population of over The Rillito River drains an area of about 1,000 square miles and empties into the Santa Cruz River at Tucson. 535,000. Urban development within the project area is subject to serious flood damage. Seven significant floods occurred from 1962 to 1983 causing serious damage to businesses, residential property, agriculture, and transportation arteries. The October 1983 flood of record caused damages estimated at $10 million ($13.6 million at 1991 prices). The Survey Report was approved by the Board of Engineers for Rivers and Harbors in March 1987. The selected plan provides for flood damage reduction along 13.2 miles of the Rillito River within the metropolitan area at an estimated cost of $29 million. The plan will provide a 100-year level of flood protection. The project would also provide recreational opportunities for residents of the Tucson metropolitan area. The average annual benefits amount to $2,037,000 ($1,857,000 for flood control and $180,000 for recreation). The benefit-cost ratio is 1.07 to 1 at 8-3/4 percent. The Pima County Transportation and Flood Control District, the local sponsor, reaffirmed its support for the project at a meeting in May 1991 and is aware of project cost sharing requirements.

The project was authorized for construction by the Energy and Water Development Appropriations Act of 1990, with the following cost-sharing requirements: Local interests will be required to provide lands, easements, rights-of-way, and disposal areas; modify or relocate buildings, utilities, roads, bridges (except railroad bridges), and other facilities, where necessary for construction of the project; pay five percent of the costs allocated to flood control; pay one half of the separable costs allocated to recreation; contribute an additional amount in cash as necessary to bring the non-Federal share of costs allocated to flood control to 25 percent; and bear all costs of operation, maintenance, and replacement of recreation and flood control facilities. In accordance with Section 104 of the Water Resources Development Act of 1986, the local sponsor will be given credits of $5.7 million for locally constructed flood control work determined to be compatible with the proposed project.

Fiscal Year 1992 funds are being used to continue preconstruction engineering and design. Fiscal Year 1993 funds will be used to complete preconstruction engineering and design in June 1993.

89 JAN 1992

Due to the 1986

The project lies on the western slope of the Sierra Nevada range in Placer, El Dorado and Sacramento Counties in Northern
California. The American River watershed drains about 2,100 square miles of mostly rugged mountainous area and is comprised
of the North, Middle, and South Forks of the American River that flow generally westward into Folsom Lake, through the city
of Sacramento, and into the Sacramento River. Because of the interaction of river flows and water stages, the Sacramento
River from the American River upstream to Verona, the Sacramento Bypass, and the Yolo Bypass from Fremont Weir to Freeport
are also part of the project area.
about $36 billion.
Flood events could potentially impact more than 387,000 people and property valued at
Folsom Lake and existing levees along the lower American River, Sacramento River, and tributary streams
and channels provide flood protection to the highly urbanized Sacramento area. However, recent evaluations indicate that
the level of flood protection in the Sacramento area and vicinity is about the 63-year level. The February 1986 storms
filled Folsom Lake and necessitated record releases in excess of design flow downstream. Because of the significant flood
threat, 500 people were put on "levee watch" as these record flows passed through the city of Sacramento.
storms, an extensive flood fighting effort was made by the Corps at a cost of $3 million and an additional $10 million was
required for post flood repair work. This project will provide increased flood protection for the study area. The cost
shared feasibility studies currently underway include the Sacramento Metropolitan Area and American River Watershed which
are currently scheduled for completion in February and January, 1992, respectively. A plan of improvement for the American
River Watershed, which optimizes National Economic Development, was presented in the April 1991 Draft Feasibility Report.
This plan provides a 400-year level of protection. The sponsor has requested a project which would provide 200-year level
of flood protection. The project would have the same features as the 400-year plan, but the proposed dam at Auburn would
be smaller. A plan of improvement for the Sacramento Metropolitan Study, providing 400-year protection to West Sacramento,
was released for public review in November 1991. The combined plans consist of a peak flow control dam on the American
River near Auburn; a 300-acre detention area in North Natomas; a pump structure above the confluence of Dry Creek and
Natomas East Main Drain; and levee and channel improvements in Natomas, Sacramento, West Sacramento and along the Sacramento
River and Yolo Bypass; and recreation trails in the Natomas area. The combined plan is estimated to cost about $933 million
and would have a benefit-cost ratio of 2.8 to 1 at 8-3/4 percent. The average annual benefits amount to $178,000,000
($176,000,000 for flood control and $2,000,000 for recreation). The State of California Reclamation Board and the

Sacramento Area Flood Control Agency have stated their intention to be the non-Federal sponsors for the flood control

29 JAN 1992

Flood Control:

California, American and Sacramento Rivers

The City and County of Sacramento will be the non-Federal sponsor for the recreation portion of
The project is not yet authorized for construction.

portion of the project. the project.

In accordance with the cost sharing and financing concepts reflected in the Water Resources Development Act of 1986, local
interests are required to provide lands, easements, rights-of-way, and dredged material disposal areas; modify or relocate
buildings, utilities, roads, bridges (except railroad bridges), and other facilities where necessary in the construction
of the project; pay a minimum of five percent in cash of the costs allocated to flood control; contribute an additional
amount in cash as necessary to bring the non-Federal share of costs allocated to flood control to at least 25 percent; and
bear all costs of operation, maintenance, and replacement of flood control facilities; pay one-half of the separable costs
allocated to recreation, and bear all costs of operation, maintenance, and replacement of recreation facilities.

Fiscal Year 1992 funds are being used to initiate preconstruction engineering and design. Funds requested for Fiscal Year
1993 will be used to continue preconstruction engineering and design, which is scheduled for completion in September 1995.
Carneros Creek

1,710,000

600,000

670,000

440,000

Carneros Creek is one of several
The project is located in Goleta Valley, 6 miles west of Santa Barbara County, California.
streams in the 48-square mile area of the Goleta Valley which flows from the southern slopes of the Santa Ynez Mountains
and industrial areas of the Goleta Valley, converging in the Goleta Slough before
through residential, commercial,
Heavy rainfall frequently produces flash floods along the creeks in
discharging into the Pacific Ocean at Goleta Beach.
The January 1967 flood was highly destructive; airport
the foothills causing widespread damage to surrounding properties.
runways were under one foot of water, railroad traffic was interrupted, highways inundated, and low-lying areas experienced
up to three feet of flooding. Damages resulting from this flood under present conditions would be approximately $4 million
February 1969 caused $530,000 in damages to the valley. Under
throughout the entire valley. Winter storms in January
A General Reevaluation Report, which was completed
present conditions these damages would be approximately $2.8 million.
in August 1990 for the overall Goleta and Vicinity Streams area, has identified a feasible plan for flood control on
The final Chief of Engineer's Report, completed in March 1991, is currently under review at the Washington
Carneros Creek.
The recommended project, estimated to cost $7.1 million, consists of an off-line excavated debris basin in
level.
combination with a diversion channel connecting to an existing detention basin north of U.S. Highway 101. The average
The benefit-cost ratio is 2.1 to 1 at 8-3/4 percent. The project
annual benefits amount to $1,126,000, all flood control.
In February 1990 the Santa Barbara County Flood Control and Water Conservation

is not yet authorized for construction.

29 JAN 1992

District, the local sponsor, expressed support of the recommended project and is aware of project cost sharing requirements.
In accordance with the cost sharing and financing concepts reflected in the Water Resources Development Act of 1986, local
interests will be required to provide lands, easements, rights-of-way, and dredged material disposal areas; modify or
relocate buildings, utilities, roads, bridges, (except railroad bridges), and other facilities, where necessary in the
construction of the project; pay five percent of the costs allocated for flood control; contribute an additional amount in
cash as necessary to bring the non-Federal share of costs allocated to flood control to 25 percent; and bear all costs of
operation, maintenance, and replacement of flood control facilities.

Fiscal Year 1992 funds are being used to initiate the General Design Memorandum. Fiscal Year 1993 funds will be used to
continue preconstruction engineering and design, which is scheduled for completion in March 1994.

Coyote and Berryessa Creeks 4,000,000

2,509,000

625,000

866,000

The project is located in the cities of San Jose and Milpitas, California immediately south of San Francisco Bay, in the Santa Clara Valley. The current population of San Jose and Milpitas is 749,800 and 48,100, respectively. Coyote Creek drains about 350 square miles and Berryessa Creek drainage basin covers about 22 square miles. The area is composed of large industrial complexes and some residential development. The December 1955 flood of record on Coyote Creek would have caused damages of over $9.6 million under October 1990 prices and conditions of development. The most recent flood in February 1983 caused over $6 million in damages on Coyote Creek. Flooding on Berryessa Creek in February 1983 caused damages to residential and commercial/industrial properties due to overbank flooding. In addition, Alviso residents were forced to evacuate their homes. The City of San Jose constructed a temporary ring levee around the community of Alviso for protection; however, the Environmental Protection Agency has determined that this levee is a major source of asbestos contamination. Removal of this contaminated temporary levee is dependent upon construction of this project. recommended project, estimated to cost $67.9 million, includes an overflow channel and offset levees on Coyote Creek; and two sedimentation basins, concrete lined trapezoidal channel and offset levees on Berryessa Creek. Average annual benefits are estimated at $9.95 million (October 1989 price level), all flood control. The benefit-cost ratio is 1.3 to 1 at 8-3/4 percent.

The

The project was authorized for construction by the Water Resources Development Act of 1990. In accordance with cost
sharing and financing concepts reflected in the Water Resources Development Act of 1986, local interests will be required
to provide lands, easements, rights-of-way and dredged material disposal areas presently estimated at $10,861,000; modify

29 JAN 1992

or relocate buildings, utilities, roads, bridges (except railroad bridges), and other facilities where necessary in the construction of the project, presently estimated at $2,690,000; pay five percent of the costs allocated to flood control, presently estimated $3,375,000; pay an additional amount in cash as necessary to bring the non-Federal share of costs allocated to flood control to 25 percent, presently estimated at $1,055,000; and bear all costs of operation, maintenance, and replacement of flood control facilities, presently estimated at $616,000 annually. In addition, the local sponsor will be required to manage hazardous and toxic wastes on project lands for which no cost sharing credit shall be given. accordance with Section 104 of the Water Resources Development Act of 1986, the non-Federal project sponsor will be afforded a credit of $8,633,000 for locally constructed flood control work compatible with the proposed Federal project. In accordance with Section 26 of the Water Resources Development Act of 1988, the sponsor will be reimbursed for work integral to the project undertaken after November 17, 1988. Section 26 reimbursement would be limited to $3,000,000. A Memorandum of Agreement for the Section 26 work was signed in August 1989, and construction was initiated by local interests in September 1989.

Fiscal Year 1992 funds are being used to continue preconstruction engineering and design studies including completion of
the final General Design Memorandum and continuation of effort on plans and specifications for the first contract for Coyote
Fiscal Year 1993 funds will be used to complete the General Design
Creek and engineering studies on Berryessa Creek.
Memorandum for Berryessa Creek, the plans and specifications for the first contract for Coyote Creek, and the Local
Preconstruction engineering and design is scheduled for completion in September
Cooperation Agreement for the project.

The project area is located within the Tulare Lake Basin, in the southeastern portion of the San Joaquin Valley, between The Kaweah River originates in the Sierra Nevada Mountains and drains the cities of Fresno and Bakersfield, California. From Lake Kaweah it passes near the city of Visalia, with a population of about about 560 square miles into Lake Kaweah. Terminus Dam was completed in 1962 to provide flood control and 72,200, as it flows west into the Tulare Lakebed. irrigation water supply. However, significant flood damages to communities and highly developed agricultural lands along Flood releases beyond Terminus Dam capacity have contributed to flood damages the Kaweah River have continued to occur. The December 1966 rainflood exceeded the design capacity of Terminus Dam and to agricultural lands in the Tulare Lakebed. floodflows passing downstream of the dam resulted in about $1.0 million in damages below the dam, under conditions and If such an event were to occur today with current prices, damages would amount to about $4.3 million. prices at that time.

29 JAN 1992

« Previous Continue »

Books

Energy and Water Development Appropriations for 1993: Corps of Engineers ...