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Intermittent stream. When referring to a body of water, the term "intermittent" means that the body of water contains water only part of the year. Natural factors such as variations in snowmelt, or human control for industrial or irrigation purposes, can affect water level and flow.
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Intermittent river. |
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Disappearing stream. |
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Perennial stream. Containing water throughout the year except during periods of severe drought.
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Perennial river. |
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Small falls; small rapids. |
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Large falls; large rapids. |
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Masonry dam. |
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Dam with lock. |
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Dam carrying road. |
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Perennial lake; intermittent lake or pond. |
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Dry lake. |
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Narrow wash. The term "wash" refers to the sweep or flow of a body of water. |
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Wide wash. |
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Canal, flume, or aqueduct with lock. |
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Elevated acqueduct, flume or conduit. |
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Aqueduct tunnel. |
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Well or spring; spring or seep. |
