Ephemeral Streams

[vc_row][vc_column border_color=”” visibility=”” width=”1/3″][mk_image src=”http://tfatraining.org/wp-content/uploads/2016/02/pg4-1.jpg” image_width=”330″ image_height=”350″ crop=”false” svg=”false” lightbox=”false” frame_style=”simple” target=”_self” caption_location=”inside-image” align=”left” margin_bottom=”10″][/vc_column][vc_column border_color=”” visibility=”” width=”2/3″][vc_column_text disable_pattern=”true” align=”left” margin_bottom=”0″]Whether or not an ephemeral stream needs an SMZ or not should be a site-specific determination made by a forester or other qualified professional.  Factors which may warrant a necessity for an SMZ on an ephemeral stream might include: soil type, slope of surrounding land, vegetative cover, and volumes of expected flows.  Some benefits of leaving an SMZ along an ephemeral stream include but are not limited to:

  • providing travel corridors and habitat for wildlife,
  • adds aesthetic quality to a harvest area,
  • and soil retention and stabilization.

Ephemeral streams usually flow less than 30% of the year or just after rain events.  If the flow of the stream can’t be determined, the presence of 3 or more of the following characteristics may help identify the stream as an intermittent stream:[/vc_column_text][/vc_column][/vc_row][mk_page_section layout_structure=”full” border_color=”#005e11″ predefined_bg=”14″ attachment=”scroll” bg_position=”left top” bg_repeat=”repeat” bg_stretch=”false” enable_3d=”false” speed_factor=”0.3″ bg_video=”no” video_source=”self” stream_host_website=”youtube” video_mask=”false” bg_gradient=”false” gr_end=”#1e73be” video_opacity=”0.6″ top_shadow=”false” section_layout=”full” min_height=”100″ full_width=”false” full_height=”false” intro_effect=”false” padding_top=”10″ padding_bottom=”10″ margin_bottom=”0″ skip_arrow=”false” skip_arrow_skin=”light” first_page=”false” last_page=”false” sidebar=”sidebar-1″][vc_column border_color=”” visibility=”” width=”1/4″][vc_column_text disable_pattern=”true” align=”left” margin_bottom=”0″]

⦁ Site may have no well-defined channel.

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⦁ Water pools are absent.

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⦁ A flow area that is almost always straight and either “flattens” out at the bottom of the slope or grades into intermittent or perennial streams.

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⦁ Fluctuating high water marks (flood prone width) and/or sediment transport are usually absent.

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⦁ There is evidence of leaf litter and/or small debris jams in the flow area.

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⦁ Wetland (hydrophytic) vegetation present is usually sparse or absent.

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⦁ The side slope soil characteristics are typical of the surrounding landscape. Soil texture usually more loamy than the surrounding upslope landscape and usually has a clay subsurface.

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⦁ Ephemeral streams are ⦁ usually not identified on USGS topographic maps or NRCS soil maps.

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