Technical memorandums (TM) are prepared which document the analyses used in the investigation of the potential SOD deficiencies. Watershed divide. To bind wire rope with soft wire, to prevent it from ravelling when cut. Low DO levels adversely affect fish and other aquatic life. Signature of the document by the author(s) signifies that a draft document was provided to team members and that they had an opportunity to comment on the draft. Any building, site, district, structure, or object significant in history, architecture, archeology, culture, or science. The greatest depth to which ground may be expected to freeze. An expanded, or enlarged, end of a pipe section, into which the next pipe fits. A dike or embankment to contain stream flow. Water uses normally associated with man's activities, primarily municipal, industrial, and irrigation uses that deplete water supplies. Cold joint. Hydrophobic. Water that flows or seeps downward and saturates soil or rock, supplying springs and wells. Hypolimnetic. A structure built to hold back a flow of water. Executive agency responsible for ensuring requirements of National Historic Preservation Act and 36 CFR Part 800 are met. Jetty. Hydroelectric power that operates with a head of 20 meters (approximately 66 feet) or less. A measure of a river's meandering. FWS is an agency within the U.S. Department of the Interior. Transformer. Welcome to the Bureau of Reclamation California-Great Basin, ABCDEFGHIJKLMNOPQRSTUVWXYZ, Note: Documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view, download Adobe Acrobat Reader, Reclamation Information Sharing Environment (RISE), American Conference of Government Industrial Hygienists, American River Water Resources Investigation, Administrative Support Career Management Program, Action Specific Implementation Plans (referred to in ESA), American Society for Testing and Materials, Assistant Secretary for Water and Science, (b)(2) Refers to Section 3406(b)(2) of the CVPIA (800,000 af of water), San Francisco Bay Conservation and Development Commissioner, California-Federal (as in CALFED Bay-Delta Program), Comprehensive Assessment of Monitoring Programs, California Center for Environmental Design Research, Comprehensive Environmental Response Compensation and Liability Act of 1980 (Superfund) (Public Law 96-510), California-Great Basin Administrative Support Council, U.S. Army Corps of Engineers (also used as"Corps"), Consolidated Operations and Maintenance Agreement, Contracting Officer's Technical Representative, California Coordinated Resources Management Program, California Urban Water Agency/Agricultural Water Users, California Urban Water Conservation Council, Central Valley Project - Operations Criteria and Plan, Centralized Water and Power Systems Control, Delta Levees Maintenance Subvention Program, Draft Programmatic Environmental Impact Statement, Efficient Agricultural Water Management Practices, Federal Reclamation Employees Association, Government Accountability Office (had been General Accounting Office), Habitat Conservation Plans (related to ESA), Department of Housing and Urban Development, Imperial Chemicals Incorporation Americas, Interior Department Electronic Acquisition System, Integrated Storage Investigation (part of CALFE, Land Use Inventory and Real Property Systems, Multi-Species Conservation Strategy (part of CALFED). Medium-size water system. Upper part of the soil ordinarily moved in tillage, or its equivalent in uncultivated soils, about 10 to 20 cm in thickness. Measurement of soil or rock after it has been loosened by digging or blasting. Nutrients. Concrete lined portion of spillway between approach channel and gate or crest structure. Ball-milling. Reaction of an animal to its environment. Layer of gravel spread over an area intended for vehicular or personnel traffic, such as roads, parking lots and sidewalks. Seismotectonic. Stoping. Attribute survey. Regional planning and coordination of preparedness and response actions are accomplished through the RRT. Risk assessment. Water soaking into the ground. Regional Hazardous Waste Management Coordinator (HWMC), National Technical Information Service (NTIS), Recreation.Gov website (www.recreation.gov), Project Hazardous Waste Coordinator (PHWC), annual failure probability of the structure, Water Resources Research Laboratory's website. A fold in rocks that curves upward in a convex way. Qualitative. Diaphragm-type earthfill. State Emergency Response Commission (SERC). Perennial stream. See auxiliary spillway, emergency spillway, service spillway, morning glory spillway, shaft spillway, and fuse plug spillway. Species.Basic category of biological classification intended to designate a single kind of animal or plant. Uniquely adapted organisms that can provide food for fish live in the ground water habitat. Stilling basin. The failure of a sloped bank of soil or rock in which the movement of the mass takes place along a surface of sliding. Extirpated species. National Response Team (NRT). Usually accompanied by noise and vibration. Estimate of the largest amount of a chemical to which a person can be exposed on a daily basis that is not anticipated to result in adverse effects (usually expressed in mg/kg/day). Maximum Contaminant Level (MCL). The crest and sides of a retangular weir are far enough from the bottom and sides of the channel so that their effect on flow is negligible. Arch-gravity dam. Power demand. Settlement. Fill. Haunches (haunch). Leaching field (leaching cesspool). Branch of biological science which deals with relationships between living organisms and their environments. Small dike or dam used in the furrow alongside an irrigation border to make the water spread evenly across the border. Pit dug for geologic investigation or inspection and testing of earthwork placement. High sodium content. The mission of the USDA Forest Service is to sustain the health, diversity, and productivity of the Nation's forests and grasslands to meet the needs of present and future generations. FEMA - Federal Emergency Management Agency. Tangent. Grapple. See dam. A layer of sedimentary rock, visually separable from other layers above and below. Aggradation. Migmatite. Portion of a soil finer that a No. Unconfined aquifer. Backwater. Enables all participants in the wholesale market equal access to transmission service, as long as capacity is available, with the objective of creating a more competitive wholesale power market. See safe yield. Examination report. Mudstone. Second grade or waste material separated from pay material during screening or processing. See fixed cone valve. A steeply sloping spillway channel that conveys discharges at super-critical velocities. Leakage. Used for vertical alignment. It includes the ground surfaces downstream of a dam showing the probable encroachment by water released because of failure of a dam or from abnormal flood flows released through a dam's spillway and/or other appurtenant works. A small, specialized, and effectively isolated location. A unit of energy equivalent to one thousand watthours. Usually expressed as mass per unit of time. Basalt. Needle valve. Some generating equipment may be operated at certain times as peaking capacity and at other times to serve loads on an around-the-clock basis. A layer of specified or selected material of planned thickness constructed on the subgrade or subbase for the purpose of serving one or more functions such as distributing load, providing drainage, minimizing frost action, etc. Mineral grains whose particle size vary from a No. The land on and immediately surrounding a structure that is owned by the entity holding title to the structure. The U.S. Irrigation. Method of estimating the value of activities, services, or other goods, where value is defined as the maximum amount a consumer would be willing to pay for the opportunity rather than do without. Toe (toe of dam). Small streams or dry streambeds. The formation of voids within soil or soft rock caused by the mechanical or chemical removal of material by seepage. The curved downstream surface of horizontal arch elements of an arch dam. Cistern. Scratch or groove in bedrock caused by rocks within a glacier grinding the earth's surface as the glacier moves. "Transmission utility" refers to the regulated owner/operator of the transmission system only. Electromotive force (EMF). Isotropic mass. Other local government entities (e.g., towns, cities, municipalities, etc.) Backfurrow. The dam tender commonly resides at or near the dam. An electrical energy unit of measure equal to one watt of power supplied to, or taken from, an electrical circuit steadily for one hour. The property of a soil or rock which allows it to be deformed beyond the point of recovery without cracking or appreciable volume change. Letter of Agreement (LOA). The rate of change in instantaneous output from a powerplant. Gradation. Surface waves can propagate only in the downstream direction. Traffic control is a temporary function for use where normal traffic controls are inadequate or where redirection of traffic becomes necessary due to emergency conditions. The water drained away from irrigated farmland. An open body of water, such as a river, stream or lake. See alkali-aggregate reaction. Compression corresponding to stresses greater than the preconsolidation stress. Pegmatite. Aquatic algae. See hydraulic height. If the rate of flow is controlled by mechanical means such as gates, it is considered a controlled spillway. Natural period of vibration (T). Improved flows that result in better stream conditions for aquatic, terrestrial, and other resources. Aeration. The scale is not based on measurement, but on assessment by an experienced observer. The aquatic region in which a certain species of fish lives. Conditionally Poor may also be used when uncertainties exist as to critical analysis parameters that identify a potential dam safety deficiency; further investigations and studies are necessary. Pipe designed to transmit the backfill load to the soil at the sides of the pipe. Surface pump. A compound, usually a man-made organic chemical, used to kill or control plant growth. A mass having the same property (or properties) in all directions. Manning's roughness coefficient (n). The ISO is an evolving concept. A small, nearly horizontal tunnel. Tuff. Loss of water to the atmosphere. Soil condition in relation to lump or particle size. State and/or local agency responsible for emergency operations, planning, mitigation, preparedness, response, and recovery for all hazards. A formal plan of procedures designed to minimize an emergency situation or unusual occurrence at a given dam or reservoir. A part of an excavator which digs, lifts, and carries dirt. Protective covering over the perimeter of a conduit, reservoir, or channel to prevent seepage losses, to withstand pressure, or to resist erosion. The average annual supply of a water development system over a long period. Computer base station. Trips organized by boating companies that conduct tours for paying passengers or customers. Roosevelt Field Division (Roosevelt, AZ). Busbar. The Wild and Scenic Rivers Act selects certain rivers possessing remarkable scenic, recreational, geologic, fish and wildlife, historic, or other similar values, for preservation in free-flowing conditions. Geotextiles. Endangered species. Overflow section of dam restricted by use of gates that can be operated to control releases from the reservoir to ensure the safety of the dam. Void. Also see core wall. Alkali-silica reaction (ASR). A mass of loose rock, soil, and earth deposited by the edge of a glacier. Aeolian deposits. Demand. UNITED STATES OF AMERICA MIAMI DISTRICT OFFICE Lacustrine habitat. The curve showing the relationship between the dry density (dry unit weight) and the moisture content of a soil for a given compactive effort. Any human-made or used object, intact or in pieces, 50 years or older. Capillary movement. In other words, any divergent views, critical issues or significant influencing factors have been captured. Interstitial flow. Wet unit weight. A resource that is out of place. WebThe introductory section contains a list of acronyms and abbreviations and the table of contents. The third of five Early Warning System components consisting of communicating alerts and warnings about an emergency condition at a dam to appropriate local officials so they can take proper action(s). Measured in terms of the work it is capable of doing; electric energy, the electric capacity generated and/or delivered over time, is usually measured in kilowatt hours (kWh). Migratory. A relative scale, from 0 to 14, of how acidic or basic (alkaline) a material is, where a pH of 7 is neutral, smaller readings increasingly acid. Exposed surface of dam materials (earth, rockfill, or concrete), upstream and downstream. Swale. Geological study of the configuration, characteristics, origin, and evolution of land forms and earth features. A structure located on or adjacent to a storage or detention dam over or through which surplus or floodwaters which cannot be contained in the allotted storage space are passed, and at diversion dams to bypass flows exceeding those which are turned into the diversion system. An arch dam in which every horizontal segment or slice of the dam has approximately the same radius of curvature. Effective force. Volume of water in a reservoir at normal water surface. Pig. A method of consolidating soil in which vibrators are used within a thoroughly wetted soil mass to consolidate the soil to the desired density. Paleoflood peak discharges are estimated using geology, fluvial, geomorphology, and stratigraphic records. The opposite of aerobic. A safety device that automatically provides protection against excessive temperatures, excessive pressures, or both. Uncertainty. In some instances it also includes power and energy sold for project irrigation purposes. A gravity dam which is curved in plan. Emergency program manager. Title VII, the electricity title of the Act, made it easier for non-utility producers to participate in the electric generation market by exempting them from regulatory restrictions imposed by the Public Utility Holding Company Act of 1935 (PUHCA). See face. Economic analysis. Headwater. Neotropic migrant (neotropical). Land classes are defined by productivity, with Class 1 being the most productive. A concrete pad or wall constructed to facilitate subsequent pressure grouting of the grout curtain beneath the grout cap. The coordinated use of surface water and ground water resources. Angle of external friction (angle of wall friction). Alluvial. A mixture of cement, water, and aggregate compacted by rolling. Celsius (C), (C). Active transport. Hydrogeologist. A physical condition capable of causing the sudden uncontrollable release of reservoir water by partial or complete failure of a dam, appurtenant structure, or facility. See erosion. See dam failure. With reference to a canal, tunnel or shaft, a coating of asphaltic concrete, concrete, reinforced concrete, or shotcrete to provide watertightness, to prevent erosion, or to reduce friction. Emergency Evacuation Zone I - The emergency evacuation zone immediately below a dam and located on both sides of the river or stream. A small channel eroded into the soil surface by runoff, rills easily can be smoothed out (obliterated) by normal tillage. The highest point of the interior of a circular conduit, pipe, or tunnel (also referred to as the soffit). Harrow. A gate consisting of a rectangular leaf encased in a body and bonnet and equipped with a hydraulic hoist for moving the gate leaf. Overwinding. Microsystem irrigation. The crest is usually set at maximum water surface. The dry unit weight defined by the peak of a compaction curve. See void. Something made up of, similar to, or containing water; watery. Any individual, district, association, government agency, or other entity that uses water supplied from a Reclamation project. An embankment type dam constructed of only one type of material. Shortened term for cubic foot per second (cfs or ft3/s). Tendency of systems, especially ecosystems, to persist, relatively unchanged, through time; also, persistence of a component of a system. User day. Soil or rock formations lacking veins of weakness. The open areas, or spaces, in soil, sediments, and rocks that are filled by air or water. Newton. Tunnels are generally located in the dam abutments, and are concrete lined or concrete/steel lined. Electrical energy produced by flowing water. Marketer. Fine-grained sedimentary rock formed from hardened clay and silt that typically splits into thin layers. Tight. Life stage of fish between the egg and fingerling stages. Grout cap. A volumetric unit of measure for crude oil and petroleum products equivalent to 42 U.S. gallons. Water moved backward or held back by a dam, tide, etc. Chemistry of ground water and surface water. U.S. Coast Guard Headquarters in Washington, D.C. National Oceanic and Atmospheric Administration (NOAA). Visitor use of recreation and wilderness resource for inspiration, stimulation, solitude, relaxation, education, pleasure, or satisfaction. The likelihood that the risk (event) will occur. The armature or stationary winding of a synchronous generator. As defined by the North American Electric Reliability Council, this refers to the flow of electric power on an electric system's transmission facilities resulting from scheduled electric power transfers between two other electric systems. A tightly compacted mixture of pulverized soil, Portland cement, and water that, as the cement hydrates, forms a hard, durable, low-cost paving material. Bioassimilation. Warm-water fishery. Overall safety of dams classification. In supplying electricity, the municipality may generate and distribute the power or purchase wholesale power from other generators and distribute it. Aquifer. Pervious zone. The primary source that provides the power that is converted to electricity through chemical, mechanical, or other means. Commercial operation. Full pool. Drill - An activity designed to evaluate a single emergency response function. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. See flood control capacity. A water habitat composed of riffles (characterized by water flowing rapidly over a coarse substrate) and pools (deeper areas of water associated with riffles). The crown of the roadway or the level of the walkway which crosses the dam. A mass of concrete or similar material appropriately placed around a pipe to prevent movement when the pipe is carrying water.

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