Term No. | Term Name/Term Description | Action |
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55 |
Partial duration series above a given base | A list of all events, such as, floods, occurring above a selected base, without regard to the number within a given period. In the case of floods, the selected base is usually equal to the lowest annual flood, in order to include at least one flood, each year...... | | Similar Terms |
342 |
Base units | The seven fundamental units of measurement upon which the International System of Units is based viz. Length (metre), weight mass (kilogram), time (second), electric current (ampere), thermodynamic temperature (kelvin), amount of substance (mole) and luminous intensity (candela)...... | | Similar Terms |
917 |
Base flow, Basic flow, or Permanent flow | 1 - The sustained or dry weather flow of streams resulting from the outflow of permanent or perched groundwater, and from the drainage of large lakes and swamps. Also water from glaciers, snow and all other possible sources not resulting from direct runoff. 2 – The discharge of a surface channel when the soil in its catchment area is in a conditi..... | | Similar Terms |
1762 |
Base | 1 - A compound capable of reacting with acids to form salts, either with or without the elimination of water. With reference to exchangeable or absorbed bases, the elements sodium, potassium, calcium and magnesium are considered bases rather than the oxides or hydroxides of these elements. 2 - See 4892 and 5766...... | | Similar Terms |
1770 |
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1772 |
Base saturation | Exchange capacity saturated with metallic cations of pH 7 or over. | | Similar Terms |
1775 |
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2439 |
Maximum base width | Horizontal distance between the outer points of the heel and toe of the cross section of a dam or spillway. | | Similar Terms |
3547 |
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4892 |
Base, Base period, or Base days | The number of days over which duty is reckoned, determined or measured. Generally base period equals the period between first and last irrigation to raise a crop...... | | Similar Terms |
5766 |
Base | 1 - The main constituent of paint that supplies body, or opacity to obscure the surface. 2 - See 1762 and 4892. | | Similar Terms |
6442 |
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6523 |
Broad-base terrace | A low embankment or ridge with gently sloping sides, rounded crown, and a broad shallow channel along the upper side, constructed to control erosion by diverting runoff along the contour at low velocity instead of permitting it to rush down the slope. It may be level or have a grade toward one or both ends...... | | Similar Terms |
6524 |
Narrow-base terrace | A terrace similar to a broad-base terrace in all respects excepting the width of ridge and channel. | | Similar Terms |
7105 |
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7134 |
Alkali or Base | A substance that, when dissolved in water, has the capacity to neutralize acids. | | Similar Terms |
7506 |
| Similar Terms |
7669 |
Base cations | Certain cations in the soil that are also plant nutrients. | | Similar Terms |
7670 |
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7841 |
Base Flood Elevation (BFE) | The height of the base (100-year) flood in relation to a specified datum, often, the elevation of the 100-year flood waters relative to "mean sea level". BFE is not depth of flooding. ..... | | Similar Terms |
7897 |
| Similar Terms |
7904 |
Base Flood | A flood having a 1-percent probability of being equaled or exceeded in any given year; also referred to as the 100-year flood...... | | Similar Terms |
7963 |
Return period, or Recurrence interval | 1 - The average time interval between occurrences of a hydrological event of a given or greater magnitude, usually expressed in years. 2 – See also 49 and 260...... | | Similar Terms |
8277 |
| Similar Terms |
8417 |
Binary system (BASE 2) | A numbering system consisting of only two digits (0 and 1), as contrasted with a Decimal System that uses ten digits (0 to 9). In electronics, "binary" and "two-state" are synonymous...... | | Similar Terms |