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The process of wearing down or rubbing away by means of friction. |
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| A fan-shaped alluvial deposit formed by a stream where its velocity is abruptly decreased, as at the mouth of a ravine or at the foot of a mountain. |
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| the lowest level to which running water can erode the land. |
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| the sand, gravel, boulders, or other debris transported by rolling or sliding along the bottom of a stream. |
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| The costs incurred by a lessee to retain exploration and property rights after acquisition but before production begins. Carrying costs can include: ad valorem taxes on non-producing mineral properties, shut-in royalties, and delay rentals. |
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| a low triangular area of alluvial deposits where a river divides before entering a larger body of water |
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| The volume of water in a flowing stream that passes a given location in a unit of time. Frequently expressed in cubic feet per second or cubic meters per second. Calculated by the formula Q = A x V where Q is the discharge, A is the cross sectional area of the channel and V is the average velocity of the stream. |
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Drainage Basin or Watershed [image] |
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| the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet |
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| A sudden and destructive rush of water down a narrow gully or over a sloping surface, caused by heavy rainfall. |
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| a nearly flat plain along the course of a stream or river that is naturally subject to flooding/ |
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| a small valley or ravine originally worn away by running water and serving as a drainageway after prolonged heavy rains. |
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| The gradual wearing away of land surface materials, especially rocks, sediments, and soils, by the action of water, wind, or a glacier. Usually erosion also involves the transport of eroded material from one place to another, as from the top of a mountain to an adjacent valley, or from the upstream portion of a river to the downstream portion. |
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| An embankment raised to prevent a river from overflowing. |
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| a bow-shaped lake formed in a former channel of a river. |
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| more or less cylindrical hole formed in rock by the grinding action of the detrital material in eddying water. |
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| the process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change. |
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| A process of erosion where one stream erodes headward, diverting some of another stream’s drainage into its own channel. Also called stream piracy. |
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| a system consisting of small particles kept dispersed by agitation (mechanical suspension) or by the molecular motion in the surrounding medium (colloidal suspension). |
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| a transverse gap in a mountain ridge, cut by and giving passage to a stream or river. |
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