Safety Evaluation of Existing Dams
International Technical Seminar and Study Tour
June 11-18, 2013
Denver, Colorado, USA, with site visits to Reclamation facilities in western USA
Introduction/Seminar Objectives In most countries throughout the world, interest in the safety of dams has risen significantly in recent years. Aging dams, new hydrologic information, and population growth in floodplain areas downstream from dams has resulted in an increased emphasis on dam safety evaluation as well as operation and maintenance related to the safety of dams.
Those responsible for the safety of existing dams must implement policies and procedures that warrant public confidence. This demands professional practices that incorporate the lessons of the past and conform to the most advanced technical state-of-the-art. The need for trained personnel is essential. This seminar will provide professional personnel with a comprehensive guide to establishing or enhancing a visual inspection/evaluation program and increase the technical capabilities of those responsible for safety evaluations.
Bureau of Reclamation officials will provide the training for the seminar. Reclamation is responsible for the proper operation, maintenance, and structural safety of more than 400 dams and distribution systems. Reclamation has conducted similar seminars for its own staff, as well as for more than 5,000 technical and administrative officials from other domestic and international agencies.
Seminar Topics The first portion of the seminar, will take place in Denver, Colorado, and will consist primarily of classroom presentations and discussions. A tour of the Bureau of Reclamation Research Laboratories will also be featured. Lectures, case histories, and structured discussions covering all aspects of a dam safety examination program are led by Reclamation engineers or geologists with extensive experience and knowledge in the areas of design, construction, operation, maintenance, and dam safety. The course outlines the hydrologic, seismic, geotechnical, electrical, mechanical and structural considerations of dam safety as well as operation, maintenance, surveillance, and emergency preparedness. Presentations, case histories, and a walk-through abbreviated examination are used to present the multidiscipline approach to an effective safety of dams program.
Site Visits The post session site visits from June 15-18, will take participants to the state of California. Participants will enjoy a free day at Lake Tahoe on June 16, 2013. Site visits will include the following:
Stampede Dam, completed in 1970 as part of Reclamation’s Washoe Project, is a rolled earth and rock-filled structure 73 meters high (239 feet) and 460 meters long (1,511 feet). The water storage capacity is 279 million cubic meters (226,500 acre-feet) which is reserved for fishery enhancement, primarily for the spawning of the endangered cui-ui, along the Truckee River downstream from Derby Dam and facilities operation of the Pyramid Lake Fishway. The reservoir provides water primarily for fishery enhancement along the Truckee River and Pyramid Lake Fishway facilities operation. The reservoir also provides flood control, recreation, a reservoir fishery, and other fishery improvements on the main Truckee River, Little Truckee River, and Boca Reservoir.
Prosser Creek Dam, completed in 1962, is approximately 2.4 kilometers (1.5 miles) above the confluence of Prosser Creek and the Truckee River. The zoned earthfill structure, has a height of 50 meters (163 feet) and a crest length of 558 meters (1,830 feet). The reservoir has a capacity of 36.7 million cubic meters (29,800 acre feet). Up to 24.6 million cubic meters (20,000 acre-feet) of this amount is required for flood control purposes from November through June. Water stored in the reservoir is used in an exchange of releases with Lake Tahoe to improve fishery flows in the Truckee River, principally in the reach from Lake Tahoe to the mouth of Donner Creek. Sites in the reservoir vicinity have been developed for recreational use and the reservoir provides a fishery.
Morman Island Auxiliary Dam, along with eight other smaller dikes, encloses low lying areas along the circumference of Folsom Lake. The earthfill dikes range in height from 3 meters (10 feet) to 30 meters (100 feet), and in length from 226 meters (740 feet) to 628 meters (2,060 feet). The auxillary dam is a rolled earthfill structure 1469 meters long (4,820 feet) and 33 meters high (110 feet). It has a volume of approximately 2,900,000 cubic meters (3,820,000 cubic yards). The combined length of the main dam, wing dams, auxiliary dam, and dikes are over 8 kilometers (5 miles). The total volume of materials in the dam, wing dams, auxiliary dam, and dikes is 10,700,000 cubic meters (13,970,000 cubic yards), including 803,000 cubic meters (1,050,000 cubic yards) of concrete in the main section. The spillway in the concrete main section is divided into eight sections, each controlled by a 13- by 15-meter (42- by 50-foot) radial gate. The capacity of the spillway is 16,000 cubic meters per/second (567,000 cubic feet per second). The dam regulates flows of the American River for irrigation, power, flood control, municipal and industrial use, fish and wildlife, recreation, and other purposes.
Folsom Dam, originally authorized in 1944 as a 438 million cubic meters (355,000 acre-feet) flood control unit, was reauthorized in 1949 as a 1.2 billion cubic meters (1,000,000 acre-feet) multiple-purpose facility. The U.S. Army Corps of Engineers constructed Folsom Dam and transferred it to Reclamation for coordinated operation as an integral part of the Central Valley Project. Construction of the dam began in October 1948 and was completed in May 1956. Folsom Dam is a concrete gravity dam 103 meters high (340 feet) and 427 meters long (1400 feet). The main section is flanked by two earthfill wing dams. The right wing dam is 2042 meters long (6,700 feet) and 44 meters high (145 feet), and the left wing dam is 640 meters long (2,100 feet) and 44 meters high (145 feet). In addition to the main section and wing dams, there is one auxiliary dam and eight smaller earthfill dikes.
Who Should Attend The seminar is designed for managers, administrators, engineers, and geologists responsible for the design, construction, operation, maintenance, and safety of dams. Policymakers and planners, as well as those with technical responsibilities, may also benefit from the seminar. All presentations, discussions, and printed materials will be in the English language. Participants should have a good command of general and technical English usage.
Costs and Registration The registration fee is U.S. $3600 per person. Various printed and electronic materials, lodging for 9 nights (June 10-18), most breakfast and lunches and transportation during the study tour are included. Hotel accommodations will be arranged by Reclamation and participants are expected to stay in selected hotels. Any miscellaneous costs such as laundry, telephone usage, etc. will be at the participant’s own expense.
It is strongly recommended that individuals apply as soon as possible for visas and seek sponsorship, if necessary. Funding is not available from the seminar organizers. Please submit a legible copy of your passport with your registration form.
Payment should accompany the registration form. Checks should be in U.S. dollars and made payable to the Bureau of Reclamation. Credit card payments, which is the preferred method of payment, and wire transfers are acceptable Registration form must be received before May 21, 2013. Due to contractual arrangements with hotels and airlines any registration forms received after the deadline, will incur a registration fee of $3900.
International travel should be arranged into Denver,Colorado, no later than Monday, June 10, 2013, and out of Sacramento, California, no earlier than Wednesday June 19, 2013.
Climate/Clothing Suggestions/Medical Insurance Participants should expect warm days and cool nights whereby a light-weight jacket may be necessary. Casual clothing and work boots/sturdy closed-toed shoes are required on field tours. Accidental injury/medical emergency insurance is strongly recommended and should be purchased prior to traveling to the United States. Reclamation is not financially responsible for any illnesses or injuries that may be incurred by participants. Please refer to the following website for reference. http://www.medexassist.com/Individuals/Products/travmedchoice.aspx
Further Information Contact the International Affairs - Denver, Bureau of Reclamation, P.O. Box 25007, Denver, Colorado 80225, telephone 1-303-445-2127 or 1-303-445-2139, fax 1-303-445-6322. E-mail inquiries to should be sent to Lprincipe@usbr.gov (Leanna Principe) or Amedina@usbr.gov (Angela Medina). Information contained in this announcement can also be located at www.usbr.gov/international.
Last updated: 11/2/12